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Counterparty Risk and Beyond

Counterparty Risk and Beyond

After completing this reading you should be able to:

  • Describe counterparty risk and differentiate it from lending risk.
  • Describe transactions that carry counterparty risk and explain how counterparty risk can arise in each transaction.
  • Identify and describe institutions that take on significant counterparty risk.
  • Describe credit exposure, credit migration, recovery, mark-to-market, replacement cost, default probability, loss given default, and the recovery rate.
  • Describe credit value adjustment (CVA) and compare the use of CVA and credit limits in evaluating and mitigating counterparty risk.
  • Identify and describe the different ways institutions can quantify, manage, and mitigate counterparty risk.
  • Identify and explain the costs of an OTC derivative.
  • Explain the components of the xVA term.

Counterparty Risk vs. Lending Risk

Counterparty risk is the risk that one or more parties in a financial transaction will fail to fulfill their side of the contractual agreement. It may arise either as a result of the counterparty’s unwillingness to observe the contractual obligations or as a result of a default, possibly occasioned by poor financial health.

Counterparty risk generally emerges in two main types of financial contracts

  • OTC derivatives such as interest rate swaps and swaptions
  • Securities financial transactions where securities are used to borrow cash or vice versa

How is Counterparty risk different from lending risk?

Lending risk, also known as credit risk is the risk that a borrower will fail to pay the principal, interest, or some of it due to insolvency. As a result, the creditor may suffer cash flow disruptions and increased collection/recovery costs.

Counterparty risk and lending risk have two key differences:

$$ \begin{array}{c|c} \textbf{Lending risk} & \textbf{Counterparty risk} \\ \hline {\text{The notional amount at risk is known at } \\ \text{any time during the life of the contract } \\ \text{with some degree of certainty. When } \\ \text{buying a bond, for example, the notional } \\ \text{amount at risk is close to par. Variables } \\ \text{such a s a floating rate of interest only } \\ \text{create moderate uncertainty over the } \\ \text{amount owed}} & {\text{The value of the contract in the future is } \\ \text{uncertain. The MTM value of a } \\ \text{derivative at any date is the net of all } \\ \text{future cash flows that are highly } \\ \text{uncertain}} \\ \hline {\text{Only one party has lending risk – the } \\ \text{creditor}} & {\text{Risk is bilateral – each party in the } \\ \text{derivative transaction has a risk to the } \\ \text{other. The contract value can be positive } \\ \text{or negative}} \\ \end{array} $$

Transactions that Carry Counterparty Risk

Before looking at some of the transactions that carry counterparty risk, it is important to mention that counterparty risk takes two forms: pre-settlement risk and settlement risk.

Pre-settlement risk is the risk that a counterparty will default prior to the expiration date of the contract, i.e., prior to the final settlement of the transaction.

Settlement risk is the risk of counterparty risk during the settlement process. It arises because the parties to a transaction, such as a forward contract, do not execute or rather perform on their obligations at exactly the same time. For example, there may be a delay in the delivery of collateral or instrument underlying the contract.

Pre-settlement Risk vs. Settlement RiskTransactions that occur through an exchange (such as the New York Stock Exchange, NYSE, or the Tokyo Stock Exchange, TSE) are generally considered to be free of counterparty risk because the exchange itself is the counterparty to every participant. In this reading, therefore, we are going to look at counterparty risk in terms of securities financing transactions and OTC derivatives.

In simple terms, a securities financing transaction (SFT) is any transaction that allows a party to use its assets, such as stocks or bonds to secure funding for their activities. SFTs encompass the following:

  • Repo transactions where one party sells a security and agrees to repurchase it in the future for the original price plus a premium.
  • Buy-sell back transactions (reverse repo transactions)
  • Securities borrowing and lending
  • Margin lending transactions

Repo Transactions

A repurchase agreement (or simply “repo”) is the sale of a security with a simultaneous agreement by the seller to buy back the same security from the same buyer at an agreed-upon price. The lender receives the repo rate which combines a risk-free rate and a risk premium. Collateral is provided in the form of liquid marketable securities. When a repurchase agreement is viewed from the perspective of the cash lending party, it is commonly called a reverse repurchase agreement.

Each market participant in a repurchase agreement is exposed to counterparty defaults, regardless of the collaterals posted. The agreement is such that the lender of funds is always the most vulnerable party. The seller may fail to repurchase the security at maturity as promised. If that happens, the lender would have to liquidate the collateral provided to recover the cash loaned out.

However, it is difficult to liquidate collateral at its market value, possibly in stressed market conditions. Therefore, a repo margin (called haircut in the US) is imposed. It is the difference between the market value of the security used as collateral and the value of the loan. For example, let’ assume that a 3% hair cut applies, and the seller wishes to be funded to the tune of $100 million. In this case, the seller would have to provide collateral with a market value of $103.0928 million [=$100m/(1-0.03)] in order to receive the $100m loan.

In essence, therefore, the haircut protects the buyer/lender against:

  • Liquidity risk when liquidating the collateral
  • Credit risk of the seller
  • Operational risk (e.g. margining lag and efficiency and speed of default procedure
  • Legal risk, i.e. legal challenges that may come up during the liquidation process

As noted earlier, counterparty risk is common in OTC derivatives like foreign exchange forwards, interest rate swaps, and credit default swaps

Foreign Exchange Forwards

In a foreign exchange forward, two parties lock in the exchange rate for a given pair of currencies on a future date. For example, an institution may enter into a contract to exchange $2m for €1.8m at a specified date in the future (note that this implies an exchange rate of €0.9 per dollar). In this case, the institution bears settlement risk in that it could pay out $2m but fail to receive €1.8. However, this occurs on the designated maturity date/expiration of the contract.

The institution also bears pre-settlement risk, but this is just equal to the difference in market value between the dollar and the Euro payments, and it could materialize anytime during the life of the contract.

Interest Rate Swaps

Interest rate swaps carry some counterparty risk because the other party may fail to floating/fixed cash payments as and when required. However, counterparty risk is reduced because there is no exchange of principal. This risk is further reduced through netting, where only the difference between the floating payment and the fixed payment is exchanged periodically.

Interest Rate Swap with a Swap DealerCredit Default Swaps

Credit default swaps do have counterpart risk in the form of wrong-way risk.

A wrong-way risk occurs when a decrease in the counterparty’s credit quality coincides with an increase in exposure. According to the International Swaps and Derivatives Association (ISDA), wrong-way risk occurs when the “exposure to a counterparty is adversely correlated with the credit quality of that counterparty.” For example, let’s say party A has invested in Lebanese sovereign debt but has bought CDS protection from a Lebanese bank. If the Lebanese debt suffers a rating downgrade, party A will appear to be “winning” because if the Lebanese government defaults, the party will be compensated by the bank. However, the ability of the bank to meet its obligations is likely to be impaired as a result of the credit rating decrease.

Institutions that Take on Significant Counterparty Risk

Institutions that take on significant counterparty risk can be split into three classes:

  1. Large Derivatives players

    These are typically large banks that have high numbers of derivatives on their books. They often trade with each other but also have a large number of clients coming from other sectors within the financial industry. These banks participate in just about every derivative product present on the market, including interest rate swaps, foreign exchange forwards, and credit derivatives. Players in this category almost always post collateral against their positions

  2. Medium Derivatives players

    These are typically smaller banks, hedge funds, and pension funds. Players in this category trade with a relatively large number of clients. They are active in a large derivatives market. Also, they may not always post collateral against positions.

  3. Small Derivatives Players

    These can be small financial institutions, large corporates, or sovereign entities with significant derivatives requirements. For example, they may be looking to hedge their investments. They have just a few derivatives trades on their books and have a relatively small number of counterparties. They may also specialize in a certain asset class, say, foreign exchange products, and often do not post collateral.

    In general, large derivatives players have the highest credit quality. Prior to the 2007/2008 financial crisis, for example, their credit spreads amounted to just a few basis points per annum. However, small players such as insurance firms and pension plans have over the years demonstrated strong credit quality and even managed to bargain for favorable trade terms such as one-way collateral agreements.

    Be that as it may, the credit quality of large players should never be ignored. Events over the last couple of years have only reinforced the idea that the bilateral nature of risk is ever-present.

Components and Terminology

Credit Exposure

The credit exposure in a transaction refers to the loss suffered in the event that the counterparty defaults. For example, assume party A and party Bare engaged in a contract and at some point after inception (but before maturity), party A has a positive value Y (it’s owed money) while party B has a negative value, -Y(i.e., it owes money). In this case, the credit exposure of party A “conditional” on party B is Y; this is the amount A will lose if B defaults.

Note that if party B defaults when party A has a negative value, the latter cannot just walk away. In other words, a default by the counterparty even when you’re “losing” doesn’t somehow make you liability-free. You will still be expected to settle the amount you owe.

Credit exposure is a particularly time-sensitive measure because default can happen at any time, in some cases years into the future and we must consider the impact of such an event. To map out the credit exposure as at a particular point in time, we much ask ourselves two key questions:

  • What is the current exposure (maximum loss if the counterparty defaulted today)?
  • What is the exposure in the future (maximum loss if the counterparty defaults at some point time in the future)?

It is important to note that for derivative contracts where there’s no exchange of principal at the onset, the creditor is only at risk for the replacement cost, not the full amount of the trade. Also important is the fact that all exposure calculations assume there’s a zero recovery rate in the event of default. The exposure is therefore the loss, as defined by the value or replacement cost that would be incurred, assuming no recovery.

Credit Migration

Credit migration refers to discrete changes in credit quality as indicated by a rating downgrade or upgrade. For example, if a bank, initially rated AAA is downgraded to AA, the bank is said to have undergone a rating migration. What this means is that the bank has moved from one class of risk to another.

In the context of derivative contracts, we are particularly concerned with negative rating migrations, i.e. a deterioration in the credit quality of the counterparty over the term of the contract. In some cases, the time horizon can extend to several years into the future.

Credit migrations are important because they influence the term structure of default probability. In this regard, we make three observations:

  1. Deterioration in credit quality suggests an increase in the probability of default over time.
  2. An improvement in credit quality suggests a decreasing the probability of default over time.
  3. Future default probability tends to decline especially when we are looking at periods further into the future. This is because there’s a higher likelihood that default will have occurred at some earlier point. For example, the probability of a counterparty defaulting between 30 and 31 years in the future may be very small, but that doesn’t necessarily mean that they are very creditworthy. Rather, it is because they are unlikely to survive for 30 years!

One of the observations supported by strong empirical evidence strongly suggests that credit quality exhibits mean reversion. This means that institutions with good credit quality tend to deteriorate over time, while those with poor credit quality tend to improve. What does this imply for counterparties? If a counterparty has a good credit quality at present, they are unlikely to default in the short-term but their probability of default will tend to increase over time. If the credit quality is poor as of today, the counterparty will be more likely to default in the short-term than in the longer-term.

Recovery Rate and Loss Given Default

The recovery rate represents the percentage of the outstanding claim that is likely to be recovered following an event of default. Closely related is the loss given default which is the percentage actually lost in the event of default. The loss given default is 100% minus the recovery rate in mathematical terms. If the recovery rate is 40%, for example, then the loss given default s 60%.

Since default claims can vary significantly, LGD is highly uncertain. And while the LGD in the context of derivatives very closely matches the LGD in the debt market, there’s a small difference. When a bond issuer defaults, the LGD can be quickly determined by selling the bond in the market. But when it comes to OTC derivatives, the LGD cannot be determined immediately because OTC derivatives are quite illiquid and cannot be traded or sold, especially when the counterparty to the derivative is in default.

Mark-to-market and Replacement Cost

Mark-to-market (MTM) is the present value of all the payments that a party is expecting to receive, less those it is obliged to make. These payments may be scheduled to occur over a long period and show strong dependence to market variables. As such, the current MTM does not constitute an immediate liability by one party to the other. Contracts are marked to market to show the current market value of the contract with respect to each counterparty. MTM can be positive or negative depending on the magnitude of all future payments and current market rates.

Since the MTM with respect to a particular counterparty defines the net value of all positions, it is directly related to what could potentially be lost today in the event of a default. However, the MTM doesn’t always equal the amount that could possibly be in the presence of netting and provision of collateral.

Replacement cost refers to the entry cost into an equivalent transaction(s) with another counterparty. Although the MTM is an indicator of replacement cost, the two are not always equal when we factor in transaction costs and bid-ask spreads.

The Different Ways Institutions Can Quantify, Manage and Mitigate Counterparty Risk

Managing Counterparty Risk

There are several methods that can be used to manage counterparty risk:

Cross-Product Netting

Cross-product netting, often known simply as netting, refers to a process where cashflows are offset and combined into a single net amount. Netting occurs when a set of bilateral contracts have both positive and negative values.

Following a default event, a counterparty cannot demand payments on positive value contracts while stopping payments on negative value contracts. Netting reduces the exposure to the net value for all the contracts covered by the netting agreement. It is an effective way of preventing “cherry-picking” by the administrator of the defaulted counterparty.

However, netting comes with legal risk because, in some jurisdictions, the practice may not be anchored in law and therefore cannot be enforced. Netting also increases the exposure of other creditors (other parties with positive claims against a counterparty).

Below is an example that illustrates how netting works (from the perspective of the bank).

$$ \textbf{An Illustration of Cross Product Netting} $$

$$ \begin{array}{c|c|c} \text{} & \textbf{Bank} & \textbf{Counterparty} \\ \hline \text{Trades with +ve MTM } & {+$20} \text{ million} & {-$20} \text{ million} \\ \hline \text{Trades with -ve MTM } & {-$15} \text{ million} & {+$15} \text{ million} \\ \hline \text{Exposure in the absence of netting} & {+$20} \text{ million} & {+$15} \text{ million} \\ \hline \text{Exposure with netting} & {+$5} \text{ million} & {$0} \\ \end{array} $$

Collateralization

Collateralization is a contractual obligation for counterparties to post securities or cash against MTM losses. For example, the netted exposure for the bank in our example above is large and positive. This means that the bank stands to lose quite a lot in the event that the counterparty defaults. A collateral agreement would reduce this exposure by requiring the counterparty to post collateral to the bank to support the exposure. In most cases, however, collateral is two-way, meaning that either counterparty is required to post collateral against a negative MTM.

Collateralization is associated with three types of risk:

  • Operational risk due to the logistics involved
  • Market risk since there will be some exposure from the time a collateral call is made and the time it is received.
  • Liquidity risk because the collateral needs to be funded, and the collateral itself may be subject to price volatility.

Like netting, however, collateralization increases the exposure of other creditors in a default scenario.

Close-out

Close-out is the immediate cancellation of all contracts with the defaulted counterparty. At the point of default, all the remaining contractual obligations are terminated, and the final positive or negative positions are combined into a single net payable or receivable. The result is an immediate realization of net gains or losses.

There are more ways counterparties can use to manage counterparty risk:

  • Trading only with high-quality counterparties
  • Use of walk-away features where the surviving counterparty cancels the transaction immediately after default.

Mitigating Counterparty Risk

Hedging

Counterparties can also hedge against default events their exposures with a range of instruments especially credit derivatives like credit default swaps. Hedging, however, creates operational risk and market risk through mark-to-market volatility of hedging instruments.

Central Counterparties

Central counterparties, also known as CCPs, protect market participants from counterparty risk by guaranteeing the trade between a buyer and a seller. The CCP themselves aim to be financially sound by demanding collateral and other financial obligations from their members. By doing so, the CCPs help avert the cascading impact a counterparty default could have on the financial markets as was seen in 2008 in the wake of the collapse of Bear Stearns.

CCPs in essence help to centralize counterparty risk by acting as intermediaries between market participants. By so doing, they create liquidity risk and systemic risk because the failure of CCP can trigger significant system-wide disturbance.

Hedging, collateralization, and netting are also possible ways of mitigating counterparty risk

Quantifying Counterparty Risk

Methods used to mitigate or manage risks are not 100% effective. They cannot eradicate risk completely. It is therefore important for an institution to correctly quantify the remaining counterparty risk and ensure that compensation is commensurate with the level of risk.

In general, there are three levels at which counterparty risk can be quantified:

  • Trade level: where all the characteristics of the trade and associated risk factors are considered
  • Counterparty level: where risk mitigants such as netting and collateralization are considered for each individual party
  • Portfolio level: where overall counterparty risk is considered while at the same time recognizing that only a small percentage of the counterparties will default

Credit Value Adjustment (CVA) and Credit Limits

When valuing derivatives, we can generally split up the process into two portions:

  1. A portion that assumes there’s no counterparty risk
  2. A portion that recognizes counterparty risk

The adjustment that takes into account the counterparty risk is known as the credit value adjustment (CVA). In other words, CVA represents the market value of the counterparty credit risk. The objective of traders is to earn a return that’s greater than CVA.

An Illustration of CVACredit limits are the techniques used to put a cap on the amount of counterparty risk taken. Credit limits and CVA complement each other and are popular methods of managing counterparty risk. However, there are two main differences:

  • While CVA examines risk at the trade and counterparty level, credit limits work on limiting counterparty risk at the portfolio level. Their mode of operations are also different.
  • CVA aims at reducing the number of counterparties in order to maximize netting benefits, while credit limits aim at maximizing the number of counterparties and therefore limit the exposure to any particular counterparty through diversification.

Costs Associated with OTC Derivatives

The cost of an OTC derivative is influenced by its moneyness from the point of view of a particular counterparty

Positive MTM (In-the-Money)

When the exposure is positive, the uncollateralized component gives rise to counterparty risk and funding costs. If some or all of the MTM is collateralized, then the counterparty is at liberty to choose what type of collateral to post from the range of possible choices as specified in the contract

Negative MTM (Out-of-the-Money)

When the exposure is negative, there is counterparty risk from the party’s own default. The negative MTM is actually a funding benefit to the extent they are not required to post collateral. If collateral is posted, then the party is at liberty to choose the type to post.

Moneyness of the transaction notwithstanding, an OTC almost always comes with extra costs:

  • costs from funding the capital that must be held against the transaction, and
  • Any initial margin that needs to be posted.

Illustration of the Lifetime Cost of an OTC DerivativexVA Terms

xVA (X-Value Adjustment), refers to the different types of valuation adjustments relating to derivative contracts. In other words, it is the general name for adjustments that are made to the fair value of a derivatives contract as a way of recognizing the presence of funding costs, counterparty risk, and regulatory capital costs.

Some of the components of xVA include the following:

Credit value adjustment, CVA

CVA reflects the cost of hedging a client’s counterparty credit risk over the life of the trade. It is the difference between the risk-free portfolio and the true portfolio value.

Debt Value Adjustment, DVA

DVA represents counterparty risk from the point of view of a party’s own default./p>

Funding Valuation adjustment, FDA

FDA is an adjustment to the value of a derivative (or a portfolio of derivatives) designed to ensure that a dealer recovers their average funding costs incurred in the process of trading and hedging derivatives

Margin Valuation Adjustment, MVA

MVA represents the cost of posting initial margin over the lifetime of the transaction

Collateral Value Adjustment, ColVA

ColVA is the costs and benefits associated with embedded optionality in the collateral agreement (for example the ability to choose the type of collateral to post), and any other non-standard collateral terms.

Capital Valuation Adjustment, KVA

KVA is the cost of holding capital over the duration of the transaction.

Practice Questions

Question 1

Netting is an example of how counterparty risk can be converted into other forms of financial risks. Which of the following best depicts this scenario?

A. Netting specifies the contractual posting of cash or securities against MTM losses, therefore, creating operational risk and market risks due to the necessary logistics involved

B. Netting agreements allow offsetting of cash flows and a combination of MTM values into a single net amount in case of default, thereby creating legal risks

C. By periodically resetting MTM values and early termination of transactions, netting will create operational and liquidity risks because of other termination events

D. All the above are correct.

The correct answer is B.

By allowing offsetting of cash flows and a combination of MTM values into one net amount, counterparty risk is transformed into legal risk where legal enforcing of netting contract in a particular jurisdiction is impossible.

Question 2

The cost at which capital is held over the transaction’s lifetime is defined the:

A. Collateral valuation adjustment (colVA)

B. Capital valuation adjustment (KVA)

C. Market value adjustment (MVA)

D. Funding value adjustment (FVA).

The correct answer is B.

All of the options are valuation adjustments made to the value of a portfolio of derivatives to account for credit risks and funding costs. The KVA is the value adjustment for regulatory capital through the life of the contract.

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