{"id":971,"date":"2019-09-05T11:07:00","date_gmt":"2019-09-05T11:07:00","guid":{"rendered":"https:\/\/analystprep.com\/study-notes\/?p=971"},"modified":"2026-01-16T07:04:06","modified_gmt":"2026-01-16T07:04:06","slug":"multi-factor-risk-metrics-and-hedges","status":"publish","type":"post","link":"https:\/\/analystprep.com\/study-notes\/frm\/part-1\/valuation-and-risk-management\/multi-factor-risk-metrics-and-hedges\/","title":{"rendered":"Modeling and Hedging Non-Parallel Term Structure Shifts"},"content":{"rendered":"<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"QAPage\",\n  \"mainEntity\": {\n    \"@type\": \"Question\",\n    \"name\": \"Impact of a 2-year key rate increase on the 20-year rate\",\n    \"text\": \"A risk manager at an Indian bank manages a portfolio of investment-grade option-free bonds and recommends portfolio hedging using key rates of 2-year, 5-year, 7-year, and 20-year exposures. The 2-year rate has increased by 10 basis points.\\n\\nHow will this increase affect the 20-year rate?\\n\\nA. It will increase by 10 basis points.\\n\\nB. It will decrease by 10 basis points.\\n\\nC. It will increase by 20 basis points.\\n\\nD. It will increase by zero basis points.\",\n    \"answerCount\": 4,\n    \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"D. It will increase by zero basis points.\\n\\nUnder the key rate duration technique, a change in a given key rate only affects yields between the adjacent key rates. The 2-year key rate affects rates from 0 to 5 years. Since the 20-year rate lies beyond this range, it is not affected by a change in the 2-year rate.\"\n    },\n    \"suggestedAnswer\": [\n      {\n        \"@type\": \"Answer\",\n        \"text\": \"A. It will increase by 10 basis points.\"\n      },\n      {\n        \"@type\": \"Answer\",\n        \"text\": \"B. It will decrease by 10 basis points.\"\n      },\n      {\n        \"@type\": \"Answer\",\n        \"text\": \"C. It will increase by 20 basis points.\"\n      }\n    ]\n  }\n}\n<\/script><br \/>\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"QAPage\",\n  \"mainEntity\": {\n    \"@type\": \"Question\",\n    \"name\": \"Key rate hedging: face amount of the 5-year security to short\",\n    \"text\": \"Suppose we have a 30-year option-free bond paying semiannual coupons of $4,000 in a flat rate environment of 5% across all maturities. The following table provides the initial price of the bond and its present value after application of a one basis point shift in four key rates:\\n\\nValue \/ Key Rate \u201801\\nInitial value: 138,200.55\\n2-year shift: 138,195.23 (5.32)\\n5-year shift: 138,187.33 (13.22)\\n7-year shift: 138,172.91 (27.64)\\n30-year shift: 138,180.25 (20.30)\\nTotal: 66.48\\n\\nSuppose further that there are four other different bonds with the following key rate exposures (per 100 face value):\\n\\n- 2-year security: 2-year key rate = 0.001\\n- 5-year security: 2-year key rate = 0.0015; 5-year key rate = 0.045\\n- 7-year security: 2-year key rate = 0.002; 5-year key rate = 0.001; 7-year key rate = 0.1\\n- 30-year security: 30-year key rate = 0.20\\n\\nIf we wish to fully hedge our initial position using these four securities, determine the face amount of the 5-year security we need to short (assume that the 2-year bond and the 30-year bond are trading at par):\\n\\nA. 27,640\\n\\nB. 10,150\\n\\nC. 28,764\\n\\nD. 30,000\",\n    \"answerCount\": 4,\n    \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"C. 28,764.\\n\\nLet Fi be the face amount of each hedging security. With the 2-year and 30-year bonds trading at par, they are exposed only to their corresponding key rates.\\n\\nSet up the key rate exposure equations (matching the target bond\u2019s key rate \u201801 values):\\n\\n2-year exposure: (0.001\/100)F2 + (0.0015\/100)F5 + (0.002\/100)F7 = 5.32\\n5-year exposure: (0.045\/100)F5 + (0.001\/100)F7 = 13.22\\n7-year exposure: (0.1\/100)F7 = 27.64\\n30-year exposure: (0.2\/100)F30 = 20.30\\n\\nSolve:\\nF30 = 10,150 and F7 = 27,640.\\nThen from the 5-year equation:\\n(0.00045)F5 + 0.00001(27,640) = 13.22\\nF5 = (13.22 \u2212 0.2764) \/ 0.00045 = 28,764.\\n\\nTherefore, the required face amount of the 5-year security to short is 28,764.\"\n    },\n    \"suggestedAnswer\": [\n      {\n        \"@type\": \"Answer\",\n        \"text\": \"A. 27,640\"\n      },\n      {\n        \"@type\": \"Answer\",\n        \"text\": \"B. 10,150\"\n      },\n      {\n        \"@type\": \"Answer\",\n        \"text\": \"D. 30,000\"\n      }\n    ]\n  }\n}\n<\/script><\/p>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/4luyb-njLqE?si=rCzFSHQjRTyJC4vc\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><strong>After completing this reading you should be able to:<\/strong><\/p>\n<ul>\n<li>Describe principal components analysis and explain its use in understanding term structure movements.<\/li>\n<li>Describe key rate shift analysis and define key rate 01 (KR01).<\/li>\n<li>Calculate the KR01s of a portfolio given a set of key rates.<\/li>\n<li>Compute the positions in hedging instruments necessary to hedge the key rate risks of a portfolio.<\/li>\n<li>Apply key rate analysis and principal components analysis to estimating portfolio volatility.<\/li>\n<li>Describe an interest rate bucketing approach, define forward bucket 01, and compare forward bucket 01s to KR01s.<\/li>\n<li>Calculate the corresponding duration measure given a KR01 or forward bucket 01.<\/li>\n<\/ul>\n<h2>Principal Components Analysis<\/h2>\n<p>This is a statistical technique that can be used to explain movements in term structure in historical data. Daily movements in the rates of various maturities are observed and certain factors (term structure movements) are identified. Term structure movements have the following properties:<\/p>\n<ul>\n<li>The daily term structure movements observed are a linear combination of the factors (e.g., a combination of 2 units of the first factor, one unit of the second factor, and 4 units of the third factor);<\/li>\n<li>The factors are uncorrelated; and<\/li>\n<li>The first two or three factors account for most of the observed daily movements.<\/li>\n<\/ul>\n<p>The importance of a factor can be measured by the standard deviation of its factor scores.<\/p>\n<p>The following are the three most important factors driving Treasury rates:<\/p>\n<ul>\n<li>Factor 1 is a shift in the term structure where all rates move in the same direction by roughly (but not exactly) the same amount.<\/li>\n<li>Factor 2 is a shift where short-term rates move in one direction and long-term rates move in the other direction. It corresponds to steepening or flattening of the term<br \/>\nstructure.<\/li>\n<li>Factor 3 is a bowing of the term structure where relatively short-term and relatively long-term rates move in one direction while intermediate rates move in the other direction.<\/li>\n<\/ul>\n<p>In chapter 12, we looked at just one factor (a parallel shift in the term structure).<\/p>\n<p>The main weakness attributable to single-factor approaches to portfolio hedging has much to do with the assumption that movements in the entire term structure can be exhaustively described by one interest rate factor. In other words, the single-factor approach erroneously assumes that all rate changes within the term structure of interest rates are driven by a single factor.<\/p>\n<p>From a practical point of view, rates in different regions of the term structure are not always correlated. As an example, the single-factor approach tells us that the 6-month rate can perfectly predict the change in the 30-year rate. This in turn informs the hedging of the 30-year bond with a 6-month bill. Such a move is unlikely to hedge the total risk inherent in the 30-year bond.<\/p>\n<p>Predicted changes in the 30-year rate based purely on changes in the 6-month rate can be quite misleading. That\u2019s because rates in different regions of the term structure (yield curve) are not always correlated. The risk of such non-parallel shifts along the yield curve is known as yield curve risk.<\/p>\n<p>Using the <strong>principal components analysis<\/strong>, multiple factors are identified and assessed in relation to their relative importance in describing movements in the term structure.<\/p>\n<p>This chapter discusses how the metrics introduced in Chapter 12 can be extended to multi-factor models.<\/p>\n<h2>A Description of the Key-rate Shift Analysis and Key Rate \u201901<\/h2>\n<h3>Key-rate Shift Analysis<\/h3>\n<p>Key rate shift analysis is a method to assess the interest rate risk of a portfolio. This approach is grounded in the recognition that changes in interest rates do not always affect all maturities equally, leading to non-parallel shifts in the yield curve. In other words, key rate shifts focus on specific segments of the maturity spectrum and measure how the value of a portfolio would change with a small shift in these targeted rates.<\/p>\n<p>The assumption behind the key rate shift analysis is that the entire spectrum of rates can be considered as a function of a few select rates at specified points along the yield curve. Thus, to measure risk and predict interest rate movements, a small number of key rates are used, usually those of highly liquid government bonds. The rates most commonly used are the U.S. Treasury 2-, 5-, 10-, and 30-year par yields. As the words suggest, a \u201ckey rate shift\u201d occurs when any of these rates shifts by one basis point. The key rate technique indicates that changes in each key rate will affect rates from the term of the previous key rate to the term of the subsequent key rate.<\/p>\n<p>The key rate shift approach enables analysts to estimate changes in all rates based on a few select rates.<\/p>\n<h3>Key Rate \u201901<\/h3>\n<p>Key Rate 01 (KR01) quantifies the impact on a portfolio&#8217;s value due to a one-basis-point change in a particular spot rate. Essentially, KR01 are partial DV01s, which are decomposed DV01s that seek to gauge the sensitivities of the portfolio&#8217;s value to movements in specific key rates of the yield curve.<\/p>\n<p>The \\(\\text{Key rate &#8217;01}\\)\u00a0is computed using the same logic as the DV01 formula used in the single-factor approach.<\/p>\n<p>$$ \\text{Key rate &#8217;01}=-\\frac { \\Delta BV }{ 10,000\\times \\Delta y } $$<\/p>\n<p>Where:<\/p>\n<p>\\(\\Delta BV\\)=change in bond value<\/p>\n<p>\\(\\Delta y\\)=change in yield (0.01%)<\/p>\n<p>Note that yield here implies the yield to maturity.<\/p>\n<p>The change in bond value here is <strong>measured in reference to the initial<\/strong> bond value.<\/p>\n<h2>Calculating the KR01s of a Portfolio Given a Set of Key Rates<\/h2>\n<p>To illustrate how to calculate the KR01s of a portfolio given a set of key rates, let us look at the following examples:<\/p>\n<h4>Example: Key Rate DV01s and Durations of the May 15, 2045, C-STRIP as of May 28, 2015<\/h4>\n<p>In the table below, column (1) gives the initial price of a C-STRIP and its present value after the application of key rate one basis point shifts.<\/p>\n<p>$$<br \/>\n\\begin{array}{l|c|c|c}<br \/>\n{} &amp;\u00a0 \\textbf{Value} &amp;\u00a0 \\textbf{Key Rate \u201801} &amp;\u00a0\\textbf{Calculation} \\\\\\hline<br \/>\n\\text{Initial value} &amp; 26.11485 &amp; {} &amp; {} \\\\ \\hline<br \/>\n\\text{2-year shift}&amp; 26.11582 &amp; {\u00a0-0.001} &amp; {-\\frac {26.11582-26.11485}{10,000\u22170.01\\%}} \\\\ \\hline<br \/>\n\\text{5-year shift} &amp; 26.11885 &amp; {\u00a0-0.040} &amp; {-\\frac {26.13885-26.11485}{10,000\u22170.01\\%}} \\\\ \\hline<br \/>\n\\text{10-year shift} &amp; 26.13885 &amp; -0.024 &amp; { -\\frac {26.13885-26.11485}{10,000\u22170.01\\%} } \\\\ \\hline<br \/>\n\\text{30-year shift} &amp; 26.01192 &amp; {\u00a00.103} &amp; {-\\frac {26.01192-26.11485}{10,000\u22170.01\\%}} \\\\\u00a0<br \/>\n\\end{array} $$<\/p>\n<p>The key rate \u201901 with respect to the 10-year shift is calculated as:<\/p>\n<p>$$\\begin{align*} \\text{Key rate &#8217;01}&amp;=-\\frac { \\Delta BV }{ 10,000\\times \\Delta y }&amp;=-\\frac { 26.13885-26.11485 }{ 10,000\\times 0.01\\% } =-0.024 \\end{align*} $$<\/p>\n<h4>How do we interpret the key rate?<\/h4>\n<p>A key rate of -0.024 implies that the C-STRIP increases in price by 0.024 per $100 face value for a one basis point 10-year shift.<\/p>\n<p><strong>Exam tip:<\/strong> Just like the DV01, a negative key rate \u201901 implies an increase in value after a given shift, relative to the initial value. A positive key rate \u201901 implies a decrease in value after a given shift, relative to the initial value.<\/p>\n<h2>Computing the Positions in Hedging Instruments Necessary to Hedge the Key Rate Risks of a Portfolio.<\/h2>\n<p>Before looking at some examples, let\u2019s try to map out a typical problem investors often find themselves in.<\/p>\n<p>Let\u2019s say an investor holds a (long) bond position and is afraid that the bond will lose some value in the future. We call such a position the \u201cunderlying exposure.\u201d How exactly can the position lose value? Suppose the position has a 5-year key rate exposure of $0.05. This implies that the position will drop in value by $0.05 if there\u2019s a one basis point shock to the 5-year key rate. If the bond is trading at, say, $94 per $100 face value, then the new price will be $93.95 per $100 face value following a one basis point increase in the 5-year key rate (Remember that bond prices fall when interest rates rise). To avoid the loss, the investor must identify and sell short another bond whose key rate exposure matches that of the underlying exposure.<\/p>\n<p>Selling short is all about selling high and buying low. The investor will borrow the bond and sell it, anticipating an increase in the 5-year key rate which will result in a decrease in the bond\u2019s price. The investor will still be obligated to \u201creturn\u201d the bond to its owner but he will buy it at a lower price and get to keep the difference, which will offset the loss incurred on the long position (underlying exposure). This is the argument behind key rate exposure hedging.<\/p>\n<p>Note that the hedging security need not have a 5-year key rate exposure of exactly $0.05. It could have an exposure of, say, 0.045, implying that the investor will not sell short exactly $100 face value of the bond; the amount will be slightly more.<\/p>\n<p>In key rate exposure hedging, therefore, the secret lies in determining the <strong>face amount \u201cF\u201d<\/strong> that\u2019s needed to <strong>neutralize<\/strong> the key rate exposure of the underlying position.<\/p>\n<h4><strong>Example 1\u00a0<\/strong><\/h4>\n<p>An underlying exposure (bond position) has a ten-year key-rate &#8217;01 of +$880. If this key rate exposure can be hedged by trading a ten-year bond that itself has a 10-year KR01 of $0.0520 per 100 face amount, what is the hedge trade?<\/p>\n<h4>Solution<\/h4>\n<p>A positive key rate \u201901 implies a decrease in value after a given shift, relative to the initial value. Thus, a ten-year key rate &#8217;01 of +$880 implies that the bond position stands to lose $880 if there happens to be a one basis point shock to the ten-year key rate. To avoid this scenario, we must determine the face amount F(10) of the ten-year bond that must be sold short to neutralize the key rate exposure. We proceed as follows:<\/p>\n<p>$$ \\begin{align*} \\frac{0.0520}{100} \u00d7 F(10)&amp; = 880\\\\ \\Rightarrow F(10)&amp; = \\frac{880}{0.00052} = $1,692,308 \\end{align*} $$<\/p>\n<p>Note that since the key rate 01s are reported per 100 face value, they need to be divided by 100 in the hedging equation. However, the key rate 01 of the initial bond position (underlying exposure) is reported for the face amount to be hedged, so it stands as it is.<\/p>\n<p>The hedge trade requires us to short the $1.692 million face amount of the ten-year bond so as to neutralize the exposure to the ten-year key rate. If there\u2019s a one basis point shock to the ten-year key rate, the long position will lose $880, while the short position will gain approximately $880 (= 0.052\/100 \u00d7 1,692,000).<\/p>\n<h4>Important note:<\/h4>\n<p>Before looking at the second example, it is important to understand exactly what key rates stand for. When we say that, for example, the 5-year key rate changes, what we mean is that if the 5-year par rate changes; all other par rates are unchanged. It is easy to think of the 5-year key rate as the 5-year spot rate, but it is not; it\u2019s the par rate. Key rates are not spot rates. (<em>Par rate denotes the coupon\u00a0rate\u00a0for which the price of a bond is equal to its nominal value (or\u00a0par\u00a0value).<\/em><\/p>\n<p>This leads us to a very important observation: a bond priced <strong>at par<\/strong> (i.e., purchase price = par value = $100) <strong>only has<\/strong> price sensitivity to key rates at the same tenor as its maturity. For instance, a 5-year coupon-paying\u00a0<strong>par\u00a0bond<\/strong> has <strong>zero sensitivity<\/strong> to a change in the 2-year key rate.\u00a0 However, a 5-year\u00a0<strong>premium\/discount<\/strong>\u00a0bond will have some sensitivity to the 2-year key rate.<\/p>\n<p>The reason, as we have seen above is that the 5-year par rate doesn\u2019t change.\u00a0 We compute the price of a bond by discounting all its cash flows by its YTM.\u00a0 If the 5-year par rate doesn\u2019t change, then the YTM on a 5-year par bond doesn\u2019t change, and therefore the price of a 5-year <strong><em>par<\/em><\/strong> bond doesn\u2019t change.<\/p>\n<h4>Example 2\u00a0<\/h4>\n<p>Suppose we have a 30-year option-free bond paying semi-annual coupons of $5,000 in a flat rate environment of 5% across all maturities. Using the concepts learned in the preceding learning outcome statements, we can compute the following key rate \u201801s and key rate durations, assuming a one-basis point shift in the key rates used:<\/p>\n<p>$$<br \/>\n\\begin{array}{l|c|c|c}<br \/>\n{} &amp; \\textbf{Value} &amp; \\textbf{Key Rate \u201801} &amp; \\textbf{Key Rate Duration} \\\\ \\hline<br \/>\n\\text{Initial value} &amp; 145,066.45 &amp; {} &amp; {} \\\\ \\hline<br \/>\n\\text{2-year shift} &amp; 145,061.23 &amp; 5.22 &amp; 0.36 \\\\ \\hline<br \/>\n\\text{5-year shift }&amp; 145,050.68 &amp; 15.77 &amp; 1.09 \\\\ \\hline<br \/>\n\\text{10-year shift} &amp; 144,989.02 &amp; 77.43 &amp; 5.34 \\\\ \\hline<br \/>\n\\text{30-year shift }&amp; 145,000.95 &amp; 65.50 &amp; 4.52 \\\\ \\hline<br \/>\n\\text{Total} &amp; {} &amp; 163.92 &amp; 11.31 \\\\<br \/>\n\\end{array}<br \/>\n$$<\/p>\n<p>For example,<\/p>\n<p>The \\(\\text{key rate \u201901}\\) with respect to the 5-year shift is calculated as:<\/p>\n<p>$$ \\begin{align*} \\text{Key rate &#8217;01}&amp;=-\\frac { \\Delta BV }{ 10,000\\times \\Delta y }\\\\ &amp;=-\\frac { 145,050.68-145066.45 }{ 10,000\\times 0.01\\% } =15.77 \\end{align*} $$<\/p>\n<p>And the corresponding key rate duration is:<\/p>\n<p>$$\\begin{align*} \\text{Duration}&amp;=\\frac { \\text{DV01} }{ 0.0001\\times \\text{bond value }}\\\\ &amp;=\\frac { 15.77 }{ 0.0001\\times 145066.45 }\\\\ &amp; =1.09 \\end{align*}$$<\/p>\n<p>A key rate &#8217;01 of 15.77 implies that the bond decreases in value by $15.77 for a one basis point shock to the 5-year key rate.<\/p>\n<p>We can easily come up with the other key rate 01\u2019s and key rate durations by performing similar calculations.<\/p>\n<p>Now to illustrate how hedging is carried out in this scenario, assume we have <strong>four other<\/strong> different securities, each with the following key rate exposures:<\/p>\n<p>To illustrate how hedging is carried out based on key rates, assume we have <strong>four other<\/strong> different securities, each with the following key rate exposures:<\/p>\n<p>$$\\begin{array}{l|c|c|c}<br \/>\n\\textbf{Security} &amp; \\textbf{Exposure} &amp; (\\textbf{ per 100 }&amp; \\textbf{face value} ) &amp; {} \\\\ \\hline<br \/>\n{} &amp; \\text{2-year key} &amp; \\text{5-year key }&amp; \\text{7-year} &amp; \\text{30-year} \\\\<br \/>\n{} &amp; \\text{rate} &amp; \\text{rate} &amp;\\text{ key rate} &amp; \\text{key rate} \\\\ \\hline<br \/>\n\\text{2-year security} &amp; 0.001 &amp; {} &amp; {} &amp; {} \\\\ \\hline<br \/>\n\\text{5-year security} &amp; 0.0015 &amp; 0.045 &amp; {} &amp; {} \\\\ \\hline<br \/>\n\\text{10-year security} &amp; 0.002 &amp; 0.001 &amp; 0.1 &amp; {} \\\\ \\hline<br \/>\n\\text{30-year security} &amp; {} &amp; {} &amp; {} &amp; 0.20 \\\\\u00a0<br \/>\n\\end{array}$$<\/p>\n<p>Note: In the table above, we assume that the 2-year bond and the 30-year bond are trading at par, in which case they are only exposed to the key rate corresponding to their maturity dates (2 years and 30 years, respectively). On the other hand, the 5-year and 10-year securities are trading at a premium.<\/p>\n<p>For the hedge to work, we must neutralize the key rate exposure at each key rate.<\/p>\n<p>Let \\({ F }_{ 2 }\\),\u00a0\\({ F }_{ 5 }\\),\u00a0\\({ F }_{\u00a010 }\\), and\u00a0\\({ F }_{ 30 }\\)\u00a0 be the face amounts of the bonds in the hedging portfolio to be sold.<\/p>\n<p><strong>2-year key rate exposure<\/strong>: Three bonds, namely the two-year, five-year, and 10-year, have an exposure to the two-year key rate. Therefore, for the two-year key rate exposure of the hedging portfolio to equal that of the underlying position, it must be the case that<\/p>\n<p>$$ \\text{2-year key rate exposure}:\\frac { 0.001 }{ 100 } \\times { F }_{ 2 }+\\frac { 0.0015 }{ 100 } \\times { F }_{ 5 }+\\frac { 0.002 }{ 100 } \\times { F }_{ 10 }=5.22 $$<\/p>\n<p><strong>5-year key rate exposure<\/strong>: Only two bonds, namely the five-year and 10-year, have an exposure to the five-year key rate. Therefore, for the five-year key rate exposure of the hedging portfolio to equal that of the underlying position, it must be the case that<\/p>\n<p>$$ \\text{5-year key rate exposure}:\\frac { 0.045 }{ 100 } \\times { F }_{ 5 }+\\frac { 0.001 }{ 100 } \\times { F }_{ 10 }=15.77 $$<\/p>\n<p><strong>10-year key rate exposure<\/strong>: Only the ten-year bond has an exposure to the ten-year key rate. Therefore, for the ten-year key rate exposure of the hedging portfolio to equal that of the underlying position, it must be the case that<\/p>\n<p>$$ \\text{10-year key rate exposure}:\\frac { 0.1 }{ 100 } \\times { F }_{ 10 }=77.43 $$<\/p>\n<p><strong>30-year key rate exposure<\/strong>: Only the 30-year bond has an exposure to the 30-year key rate. Therefore, for the ten-year key rate exposure of the hedging portfolio to equal that of the underlying position, it must be the case that<\/p>\n<p>$$ \\text{30-year key rate exposure}:\\frac { 0.2 }{ 100 } \\times { F }_{ 30 }=65.50 $$<\/p>\n<p>Solving equations (1) through (4) simultaneously gives the following solution for the face value of the hedging bonds in the hedging portfolio:<\/p>\n<p>$$ \\begin{align*}{ F }_{ 30 }&amp;=32,750\\\\\u00a0\u00a0{ F }_{ 10 }&amp;=77,430\\\\\u00a0{ F }_{ 5 }&amp;=33,324\\\\ { F }_{ 2 }&amp;=317,150 \\end{align*}$$<\/p>\n<p>What then, do these figures imply?<\/p>\n<p>The investor needs to short $317,150 face amount of the 2-year security, short $33,324 face amount of the 5-year security, short $77,430 face amount of the 10-year security, and finally short $32,750 face amount of the 30-year security. Only then would the initial bond position be insured from changes in rates close to the key rates used.<\/p>\n<p>However, such a hedge portfolio is not perfect, and the hedged position is actually only approximately immune due to two main reasons<\/p>\n<p>As is the case whenever derivatives are used for hedging purposes, the quality of hedge deteriorates as the size of the interest rate change increases.<\/p>\n<p>The hedge will work only if the par yields between key rates move as assumed (linearly).<\/p>\n<p>Other reasons why the hedge may not work include:<\/p>\n<ul>\n<li>Hedging implies more instruments and more transaction costs which may eat up the scooped gains;<\/li>\n<li>Under the key rate model, the number of key rate durations to be used and the corresponding choice of key rates remain quite arbitrary<\/li>\n<\/ul>\n<h2 class=\"md-nonanchor-heading\">Applying Key Rate Analysis and Principal Components Analysis to Estimating Portfolio Volatility<\/h2>\n<p>Although we have studied at length the term structure of interest rates, we are yet to look at volatility. Just like there is a term structure for interest rates, there is also a term structure for volatility. In fact, the volatility term structure typically slopes downwards when plotted against maturity. This implies that the shorter the maturity of the par-rate, the more volatile it tends to be. The 10-year par rate, for example, is usually more volatile than the 30-year par rate. In general, portfolios are exposed to interest rates all along the curve, but changes in these rates are not perfectly correlated. How can we go about estimating volatilities for the key rates?<\/p>\n<p>Portfolio volatility can be estimated using the standard deviation of the portfolio&#8217;s value changes due to key rate shifts. The daily standard deviation is calculated using the sum of the products of each key rate shift squared, their respective probabilities, and the squared correlation between the key rates.\u00a0<\/p>\n<p><strong>For Key Rate Analysis<\/strong>:<\/p>\n<p>The standard deviation of the daily changes in the value of the portfolio \\( \\sigma_P \\) due to key rate shifts is given by the formula:<br \/>\n$$\\begin{align*} \\sigma_P = \\sqrt{\\sum_{i=1}^{n} \\sum_{j=1}^{n} \\rho_{ij} \\cdot KRO1_i \\cdot KRO1_j} \\end{align*}$$<\/p>\n<p>Where:<br \/>\n\\( \\rho_{ij} \\) is the correlation between the key rate shifts \\(i\\) and \\(j\\),<br \/>\n\\( KRO1_i \\) is the change in the portfolio&#8217;s value due to a one-basis-point shift in key rate \\(i\\).<\/p>\n<p><strong>For Principal Components Analysis<\/strong>: The formula remains similar; however, it considers the standard deviations of the factors (components) affecting the yield curve.<\/p>\n<p><strong>Example:\u00a0Estimating Portfolio Volatility<\/strong><\/p>\n<p>Let&#8217;s assume we have three key rates and the portfolio&#8217;s value changes as follows:<\/p>\n<ul>\n<li>The portfolio value changes by +20 when the term structure has the changes indicated by the first factor.<\/li>\n<li>The portfolio value changes by +35 when the term structure has the changes indicated by the second factor,<\/li>\n<li>The portfolio value changes by -10 when the term structure has the changes indicated by the third factor.<\/li>\n<\/ul>\n<p>And the standard deviations of the movements in the three factors are:<\/p>\n<ul>\n<li>First factor \\( KRO1_1 \\): 2 basis points<\/li>\n<li>Second factor \\( KRO1_2 \\): 4.66 basis points<\/li>\n<li>Third factor \\( KRO1_3 \\): 2.32 basis points<\/li>\n<\/ul>\n<p>Assuming that the correlations \\( \\rho \\) between each of the factors are zero, what is the portfolio volatility?<\/p>\n<p><strong>Solution<\/strong>:<\/p>\n<p><span class=\"hljs-comment\">Since there are no correlations given between the factors, we will not include them in the calculation.<\/span> <span class=\"hljs-comment\">If there were correlations, they would be multiplied by the respective terms.<\/span><\/p>\n<p>The calculation for the portfolio&#8217;s standard deviation \\( \\sigma_P \\) is:<br \/>\n$$\\begin{align*} \\sigma_P &amp;= \\sqrt{(\\text{Change}_1^2 \\cdot KRO1_1^2) + (\\text{Change}_2^2 \\cdot KRO1_2^2) + (\\text{Change}_3^2 \\cdot KRO1_3^2)} \\\\<br \/>\n&amp;= \\sqrt{(20^2 \\cdot 2^2) + (35^2 \\cdot 4.66^2) + (10^2 \\cdot 2.32^2)} \\\\<br \/>\n&amp;= 169.53\\end{align*}$$<\/p>\n<p>The calculated standard deviation of the portfolio&#8217;s value, given the specified changes due to the key rate shifts, is approximately 169.53 basis points.<\/p>\n<h2 class=\"md-nonanchor-heading\">Interest Rate Bucketing Approach, Forward Bucket 01s, and KR01s<\/h2>\n<h3>Partial \u201801s<\/h3>\n<p>Key rate shifts make use of a few key rates to determine risk exposures and execute hedging strategies. For, example, in this reading, we\u2019ve used the 2-year, 5-year, 10-year, and 30-year par yields. The hedging strategy must involve all four.<\/p>\n<p>However, when the securities involved contain swaps, we need more to assess the effect of interest rates at more points along the yield curve. There\u2019s a need to measure more frequently. This leads us to partial \u201801s and forward-bucket \u201801s.<\/p>\n<p>When swaps are taken as the benchmark for interest rates in complex portfolios, risk along the curve is usually measured with Partial \u201901s or Partial PV01s, rather than with key-rate \u201901s. Swap market participants fit a swap rate at least once every day from a set of observable par swap rates or futures rates. Using the fitted swap rate curve, the sensitivity of a portfolio can be measured in terms of changes in the rates of the fitting securities.<\/p>\n<p>It follows that by definition, <strong>partial \u201901 <\/strong>(PV01) <strong>is the change in the value of a portfolio after<\/strong> a one-basis-point decline in that fitted rate and refitting of the curve. All other fitted rates are <strong>unchanged.\u00a0<\/strong>With partial \u201801s, yield curve shifts are able to be fitted more precisely because we are constantly fitting securities.<\/p>\n<h4>Example of\u00a0Partial \u201801s<\/h4>\n<p>If a curve-fitting algorithm fits the three-month London Interbank Offered Rate (LIBOR) rate and par rates at 2-, 5-, 10-, and 30-year maturities, then, the two-year partial \u201901 would be the change in the value of a portfolio for a one-basis-point decline in the two-year par rate and refitting of the curve, where the three-month LIBOR and the par 5-, 10-, and 30-year rates are kept the same.<\/p>\n<h3>Forward-bucket \u201901s\u00a0<\/h3>\n<p>While key rates and partial \u201901s do a fantastic job expressing the exposures of a position in terms of hedging securities, forward-bucket \u201901s present a far more direct and intuitive way to convey the exposures of a position to different parts of the curve.\u00a0<\/p>\n<p>A bucket is a jargon for a region of the term structure of interest rates.<\/p>\n<p>Forward Bucket 01, commonly referred to as Forward 01, quantifies the change in the value of a portfolio or instrument resulting from a one-basis-point shift in the forward rates corresponding to a specific bucket. It reflects the sensitivity of that bucket&#8217;s segment of the yield curve to a marginal increase in forward rates.<\/p>\n<p>Forward-bucket \u201901s\u00a0are computed by shifting the forward rate over each of several defined regions of the term structure on the region at a time. They, however, aren\u2019t the quickest way to determine the hedges required to pull off that perfect \u201cimmunization\u201d.<\/p>\n<p>The first step under this methodology is to subdivide the term structure into buckets. The 5 most common buckets are 0-2 years, 2-5 years, 5- 10 years, 10-15 years, and 20-30 years. After that, each forward-bucket \u201901 is computed by shifting the forward rates in that bucket by one basis point. In so doing, the analyst may have to shift all of a bucket\u2019s semiannual forward rates, quarterly forward rates, or even shorter-term rates.<\/p>\n<h4>Example: Computation of Forward-Bucket \u201801s of a 5-year Swap Given a 0-2 year Bucket and a 2-5 year Bucket.<\/h4>\n<p>The table below lists the cash flows of the fixed side of the 100 notional amount of a swap, the current forward rates (marked \u201ccurrent\u201d) as of the pricing date, and the three shifted forward curves.<\/p>\n<p>$$\\begin{array}{lc|cccc}<br \/>\n&amp; &amp; &amp; \\textbf{Forward Rates} &amp; &amp; \\\\\\hline<br \/>\n\\textbf{Term} &amp; \\textbf{Cash flow} &amp; \\textbf{Current} &amp; \\textbf{0-2 shift} &amp; \\textbf{2-5 shift} &amp; \\textbf{shift-all} \\\\<br \/>\n0.5 &amp; 1.06 &amp; 1.012 &amp; 1.022 &amp; 1.012 &amp; 1.022 \\\\<br \/>\n1 &amp; 1.06 &amp; 1.248 &amp; 1.258 &amp; 1.248 &amp; 1.258 \\\\<br \/>\n1.5 &amp; 1.06 &amp; 1.412 &amp; 1.422 &amp; 1.412 &amp; 1.422 \\\\<br \/>\n2 &amp; 1.06 &amp; 1.652 &amp; 1.662 &amp; 1.652 &amp; 1.662 \\\\<br \/>\n2.5 &amp; 1.06 &amp; 1.945 &amp; 1.945 &amp; 1.955 &amp; 1.955 \\\\<br \/>\n3 &amp; 1.06 &amp; 2.288 &amp; 2.288 &amp; 2.298 &amp; 2.298 \\\\<br \/>\n3.5 &amp; 1.06 &amp; 2.614 &amp; 2.614 &amp; 2.624 &amp; 2.624 \\\\<br \/>\n4 &amp; 1.06 &amp; 2.846 &amp; 2.846 &amp; 2.856 &amp; 2.856 \\\\<br \/>\n4.5 &amp; 1.06 &amp; 3.121 &amp; 3.121 &amp; 3.131 &amp; 3.131 \\\\<br \/>\n5 &amp; 101.06 &amp; 3.321 &amp; 3.321 &amp; 3.331 &amp; 3.331 \\\\<br \/>\n&amp; &amp; &amp; &amp; &amp; \\\\<br \/>\n\\text{Present value} &amp; &amp; 99.9955 &amp; 99.976 &amp; 99.9679 &amp; 99.9483 \\\\<br \/>\n01 &amp; &amp; &amp; 0.0195 &amp; 0.0276 &amp; 0.0472 <br \/>\n\\end{array}$$<\/p>\n<p><i>Credit: <\/i><i>Bruce <\/i><i>Tuckman<\/i><i> and Angel <\/i><i>Serrat<\/i><i>, Fixed Income Securities: Tools for Today\u2019s Markets, 3rd Edition <\/i><\/p>\n<ul>\n<li>For the \u201c0-2 Shift,\u201d forward rates of term 0.5 to 2.0 years are shifted up by one basis point while holding all other forward rates constant.<\/li>\n<li>For the \u201c2-5 Shift,\u201d forward rates of term 2.0 to 5.0 years are shifted up by one basis point while, again, holding all other forward rates constant.<\/li>\n<li>Lastly, for \u201cShift All,\u201d the forward rates in the curve are shifted<\/li>\n<\/ul>\n<p>The row labeled \u201cPresent Value\u201d gives the present value of the cash flows first under the initial forward rate curve and then under each of the shifted curves.<\/p>\n<p>The forward-bucket \u201901 for each shift can then be computed as the negative of the difference between the shifted and initial present values, i.e.,<\/p>\n<h4>Forward bucket \u201901 = \u2013(shifted present value \u2013 initial present value) <strong><br \/>\n<\/strong>For the 0-2-year shift, for example, the \u201901 is \u2212(99.976 \u2212 99.9955), or 0.0195<\/h4>\n<p>The \u201901 of the \u201cShift All\u201d scenario is analogous to a DV01. The forward bucket analysis decomposes this total \u201901 into 0 .0195 due to the 0-2-year part of the curve and 0.0276 due to the 2-5-year part of the curve.<\/p>\n<h3>Hedging across Forward-Bucket Exposures<\/h3>\n<p>Referring to the GARP-assigned Tuckman reading, let us say a counterparty enters into a euro 5&#215;10 payer swaption with a strike of 4.044% on May 28, 2010.<\/p>\n<p>This payer swaption gives the buyer the right to pay a fixed rate of 4.044% on a 10-year euro swap in five years. The underlying is a 10-years swap for settlement on May 31, 2015.<\/p>\n<p>The table below gives the forward-bucket \u201801s of this swaption for four different buckets, along with other swaps for hedging purposes.<\/p>\n<p>$$\\begin{array}{l|c|clc|c|c|c}\u00a0<br \/>\n\\textbf{Security} &amp; \\textbf{Rate} &amp; \\textbf{0-2} &amp; \\textbf{2-5} &amp; \\textbf{5-10} &amp; \\textbf{10-15} &amp; \\textbf{All} \\\\\u00a0\\hline<br \/>\n\\text{5\u00d710 payer swaption} &amp; 4.04\\% &amp; 0.0010 &amp; 0.0016 &amp; -0.0218 &amp; -0.0188 &amp; \\textbf{-0.0380} \\\\<br \/>\n\\text{5-year swap} &amp; 2.120\\% &amp; 0.0196 &amp; 0.0276 &amp; 0.0000 &amp; 0.0000 &amp; 0.0472 \\\\<br \/>\n\\text{10-year swap} &amp; 2.943\\% &amp; 0.0194 &amp; 0.0269 &amp; 0.0394 &amp; 0.0000 &amp; 0.0857 \\\\<br \/>\n\\text{15-year swap} &amp; 3.290\\% &amp; 0.0194 &amp; 0.0265 &amp; 0.0383 &amp; 0.0323 &amp; 0.1165 \\\\<br \/>\n\\text{5\u00d710 swap} &amp; 4.044\\% &amp; 0.0000 &amp; 0.0000 &amp; 0.0449 &amp; 0.0366 &amp; 0.0815<br \/>\n\\end{array}$$<\/p>\n<p>Since the overall forward-bucket \u201901 of the year swaption is negative (-0.0380), as rates rise, the value of the option to pay a fixed rate of 4.044% in exchange for a floating rate worth par also rises.<\/p>\n<p>The table below shows forward-bucket exposures of three different ways to hedge this payer swaption (as of May 28, 2010) using securities presented in the previous table:<\/p>\n<p>$$\\begin{array}{l|cccc|c}<br \/>\n\\textbf{Security\/Portfolio} &amp; \\textbf{0-2} &amp; \\textbf{2-5} &amp; \\textbf{5-10} &amp; \\textbf{10-15} &amp; \\textbf{All} \\\\\u00a0\\hline<br \/>\n\\text{5*10 payer swaption} &amp; 0.001 &amp; 0.0016 &amp; -0.0218 &amp; -0.0188 &amp; -0.0380 \\\\<br \/>\n\\text{Hedge #1:Long 44.34% of 10-year swaps} &amp; 0.0086 &amp; 0.0119 &amp; 0.0175 &amp; &amp; 0.038 \\\\<br \/>\n\\text{Net position} &amp; 0.0096 &amp; 0.0135 &amp; -0.0043 &amp; -0.0188 &amp; 0.000 \\\\\u00a0\\hline<br \/>\n\\text{Hedge #2:Long 46.66% of 5*10 swaps} &amp; &amp; &amp; 0.0209 &amp; 0.0171 &amp; 0.038 \\\\<br \/>\n\\text{Net position} &amp; 0.001 &amp; 0.0016 &amp; -0.0009 &amp; 0.0017 &amp; 0.000 \\\\\u00a0\\hline<br \/>\n\\text{Hedge #3:} &amp; &amp; &amp; &amp; &amp; \\\\<br \/>\n\\text{Long 57.55% of 15-year swaps} &amp; 0.0112 &amp; 0.0153 &amp; 0.022 &amp; 0.0186 &amp; 0.067 \\\\<br \/>\n\\text{Short 61.55% of 15-year swaps} &amp; -0.012 &amp; -0.017 &amp; &amp; &amp; -0.029 \\\\<br \/>\n\\text{Net position} &amp; 0.0002 &amp; -0.0001 &amp; 0.0002 &amp; -0.0002 &amp; 0.000 <br \/>\n\\end{array}$$<\/p>\n<p>As is apparent, the third hedge is the best option since this hedge best neutralizes risk in each of the buckets (the lowest net position indicates when risk is best neutralized).<\/p>\n<p style=\"text-align: left;\"><i>Credit: <\/i><i>Bruce <\/i><i>Tuckman<\/i><i> and Angel <\/i><i>Serrat<\/i><i>, Fixed Income Securities: Tools for Today\u2019s Markets, 3rd Edition<\/i><\/p>\n<h3 class=\"md-nonanchor-heading\">Comparing Forward Bucket 01s to KR01s<\/h3>\n<p>Forward Bucket 01s and KR01s are similar in that they both measure the effect of rate changes on a portfolio or bond; however, there are critical differences:<\/p>\n<ul>\n<li><strong>Focus<\/strong>: KR01s focus on key rate shifts, which are spot rates at specific maturities, while Forward Bucket 01s focus on how forward rates in specified maturity buckets will affect the bond price.<\/li>\n<li><strong>Measurement<\/strong>: KR01s assess the impact of a parallel shift in key spot rates. In contrast, Forward Bucket 01s assess the value change due to non-parallel shifts, looking specifically at how forthcoming rate changes in different maturity buckets, as implied today, will affect the portfolio.<\/li>\n<li><strong>Portfolio Construction<\/strong>: KR01s are essential for managing spot rate risk and are directly related to the portfolio&#8217;s current value. Forward Bucket 01s consider the expected future changes and are relevant to instruments like swaps, swaptions, and any other contracts dependent on future rates.<\/li>\n<\/ul>\n<h2 class=\"md-nonanchor-heading\">Calculation of Duration Measure Given a KR01 or Forward Bucket 01<\/h2>\n<p>To calculate the duration measure from a Key Rate 01 (KR01) or a Forward Bucket 01 (Forward 01), one should use the modified duration formula that relates these sensitivity measures to the change in the value of a portfolio or bond.<\/p>\n<h3 class=\"md-nonanchor-heading\">Duration Calculation Formula<\/h3>\n<p>The generic formula for converting a KR01 or Forward 01 to a duration measure is as follows:<\/p>\n<p>\\[ \\text{Duration Measure} = \\frac{10,000 \\times (\\text{01 Measure})}{\\text{Value of Portfolio}} \\]<\/p>\n<p>Here, the &#8217;01 Measure&#8217; can be KR01 or Forward 01, and the &#8216;Value of Portfolio&#8217; refers to the current market value of the portfolio or bond.<\/p>\n<h3 class=\"md-nonanchor-heading\">From Forward Bucket 01 to Duration<\/h3>\n<p>Let&#8217;s consider an example using the forward bucket 01 measures for a three-year 6% coupon bond with a face value of USD 100, and a flat term structure at 4% (compounded semi-annually). We calculate the duration for each forward bucket as follows:<\/p>\n<ul>\n<li>0-1 Year Bucket: Forward Bucket 01 = 0.0102<\/li>\n<li>1-2 Years Bucket: Forward Bucket 01 = 0.0096<\/li>\n<li>2-3 Years Bucket: Forward Bucket 01 = 0.0091<\/li>\n<\/ul>\n<p>The bond&#8217;s market value is 105.6014 (determined prior to the shift in forward rates). Using the formula above, the forward bucket duration for each bucket is calculated as:<\/p>\n<p>\\[\\begin{align} &amp;\\text{Forward Bucket Duration}_{0-1} = \\frac{10,000 \\times 0.0102}{105.6014} = 0.97\\\\&amp; \\text{Forward Bucket Duration}_{1-2} = \\frac{10,000 \\times 0.0096}{105.6014} = 0.91\\\\&amp; \\text{Forward Bucket Duration}_{2-3} = \\frac{10,000 \\times 0.0091}{105.6014} = 0.86 \\end{align}\\]<\/p>\n<p>The total duration derived from adding up these components would be 2.74.<\/p>\n<h3 class=\"md-nonanchor-heading\">From KR01 to Duration<\/h3>\n<p>The same formula applies when converting KR01s to duration measures. If, for example, the portfolio has a KR01 of 0.0300 for a specific key rate and a portfolio value of $1,000,000, the duration measure would be calculated as:<\/p>\n<p>\\[ \\text{Duration} = \\frac{10,000 \\times 0.0300}{1,000,000} = 0.30\\]<\/p>\n<p>This means that for a one-basis-point increase in that key rate, the value of the portfolio is expected to change by an amount equivalent to a security with a modified duration of 0.30.<\/p>\n<blockquote>\n<h2>Practice Questions<\/h2>\n<h3>\u00a0Question 1<\/h3>\n<p>A risk manager at an Indian bank helps manage a portfolio of investment-grade option-free bonds. After a lengthy market analysis, the manager strongly recommends portfolio hedging using the key rates of 2-year, 5-year, 7-year, and 20-year exposures. According to the manager, the 2-year rate has increased by 10 basis points in the recent past.<\/p>\n<p>How will the increase affect the 20-year rate?<\/p>\n<p>A. It will increase by 10 basis points<\/p>\n<p>B. It will decrease by 10 basis points<\/p>\n<p>C. It will increase by 20 basis points<\/p>\n<p>D. It will increase by zero basis points<\/p>\n<p>The correct answer is <strong>D<\/strong>.<\/p>\n<p>The key rate technique indicates that changes in each key rate will affect rates from the term of the previous key rate to the term of the subsequent key rate. In this case, the 2-year key rate will affect all rates from 0 to 5 years; the 5-year key rate affects all rates from 2 to 7 years; the 7-year key rate affects all rates from 5 to 20 years; and the 20-year key rate affects all rates from 7 years to the end of the curve.<\/p>\n<h3>Question 2<\/h3>\n<p>Suppose we have a 30-year option-free bond paying semiannual coupons of $4,000 in a flat rate environment of 5% across all maturities. The following table provides the initial price of the bond and its present value after application of a one basis point shift in four key rates:<\/p>\n<p>$$<br \/>\n\\begin{array}{l|c}<br \/>\n{} &amp; \\textbf{Value} &amp; \\textbf{Key Rate \u201801} \\\\ \\hline<br \/>\n\\text{Initial value} &amp; 138,200.55 &amp; {} \\\\ \\hline<br \/>\n\\text{2-year shift}&amp; 138,195.23 &amp; 5.32 \\\\ \\hline<br \/>\n\\text{5-year shift} &amp; 138,187.33 &amp; 13.22 \\\\ \\hline<br \/>\n\\text{7-year shift} &amp; 138,172.91 &amp; 27.64 \\\\ \\hline<br \/>\n\\text{30-year shift} &amp; 138,180.25 &amp; 20.30 \\\\ \\hline<br \/>\n\\text{Total} &amp; {} &amp; 66.48 \\\\\u00a0<br \/>\n\\end{array}<br \/>\n$$<\/p>\n<p>Suppose further that there are four other different bonds with the following key rate exposures:<\/p>\n<p>$$\\begin{array}{l|ccc}<br \/>\n\\textbf{Security} &amp; \\textbf{Exposure} &amp; (\\textbf{ per 100 }&amp; \\textbf{face value} ) &amp; {} \\\\ \\hline<br \/>\n{} &amp; \\text{2-year key} &amp; \\text{5-year key }&amp; \\text{7-year} &amp; \\text{30-year} \\\\<br \/>\n{} &amp; \\text{rate} &amp; \\text{rate} &amp;\\text{ key rate} &amp; \\text{key rate} \\\\ \\hline<br \/>\n\\text{2-year security} &amp; 0.001 &amp; {} &amp; {} &amp; {} \\\\ \\hline<br \/>\n\\text{5-year security} &amp; 0.0015 &amp; 0.045 &amp; {} &amp; {} \\\\ \\hline<br \/>\n\\text{7-year security} &amp; 0.002 &amp; 0.001 &amp; 0.1 &amp; {} \\\\ \\hline<br \/>\n\\text{30-year security} &amp; {} &amp; {} &amp; {} &amp; 0.20 \\\\\u00a0<br \/>\n\\end{array}$$<\/p>\n<p>If we wish to fully hedge our initial position using these four securities, determine the face amount of the 5-year security we need to short (assume that the 2-year bond and the 30-year bond are trading at par):<\/p>\n<p>A. 27,640<\/p>\n<p>B. 10,150<\/p>\n<p>C. 28,764<\/p>\n<p>D. 30,000<\/p>\n<p>The correct answer is <strong>C<\/strong>.<\/p>\n<p>If we assume that the 2-year bond and the 30-year bond are trading at par, they are only exposed to the key rate corresponding to their maturity dates (2 years and 30 years, respectively). The face amount we need for each security is given by \\({ F }_{ i }\\).<\/p>\n<p>$$\\begin{align*} \\text{2-year key rate exposure}:&amp;\\frac { 0.001 }{ 100 } \\times { F }_{ 2 }+\\frac { 0.0015 }{ 100 } \\times { F }_{ 5 }+\\frac { 0.002 }{ 100 } \\times { F }_{ 7 }=5.32\\\\ \\text{5-year key rate exposure}:&amp;\\frac { 0.045 }{ 100 } \\times { F }_{ 5 }+\\frac { 0.001 }{ 100 } \\times { F }_{ 7 }=13.22\\\\ 7-\\text{year key rate exposure}:&amp;\\frac { 0.1 }{ 100 } \\times { F }_{ 7 }=27.64\\\\ \\text{30-year key rate exposure}:&amp;\\frac { 0.2 }{ 100 } \\times { F }_{ 30 }=20.30 \\end{align*}$$<\/p>\n<p>$$ \\cdots \\cdots \\cdots \\cdots \\cdots \\cdots \\cdots \\cdots \\cdots \\cdots $$<\/p>\n<p>$$\\begin{align*} { F }_{ 30 }&amp;=10,150\\\\ { F }_{ 7 }&amp;=27,640\\\\{ F }_{ 5 }&amp;=\\frac { 13.22-0.2764 }{ 0.00045 } =28,764 \\end{align*}$$<\/p>\n<\/blockquote>\n\n            <div \n                class=\"elfsight-widget-pricing-table elfsight-widget\" \n                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Describe key rate shift analysis and define key rate 01 (KR01). Calculate the KR01s of a portfolio given&#8230;<\/p>\n","protected":false},"author":3,"featured_media":1536,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,15],"tags":[],"class_list":["post-971","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-part-1","category-valuation-and-risk-management","blog-post","animate"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Multi-Factor Risk Metrics and Hedges | FRM Part I<\/title>\n<meta name=\"description\" content=\"Explains multi-factor risk metrics and hedging, highlighting limits of single-factor approaches and applications in duration hedging and risk management.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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