April 6, 2021

Analysis

# Risks and Crises

“The Most Significant Economic Crisis of the Era is the One that Has Not Happened.”
Hyman Minsky, 1982

### The Importance of Being a Risk Manager

In “It’s a Wonderful Life (1945),” Jimmy Stewart struggles to convert his well-functioning loans into cash. The absence of convertibility, known as liquidity risk in modern finance, impaires his ability to pay depositors. Like any traditional financial intermediary, Stewart seeks to transform short-term debts (deposits) into long-term assets (loans). According to traditional macroeconomic accounts, a run on the bank could be prevented if Stewart had borrowed money from the Fed and used the bank’s assets as collateral. British journalist Walter Bagehot argued that the Fed acts as a “lender of last resort,” injecting liquidity into the banking system. As long as the bank was perceived solvent, its access to the Fed’s credit facilities would be almost guaranteed. For a long time, Bagehot’s rule, “lend freely, against good collateral, but at a high rate,” restored the Fed’s control over the money market and helped end banking panics and systemic banking crises.

This control evaporated on September 15, 2008, with the Lehman Brothers’ collapse. On that day, an enormous spike in interbank lending rates was caused not by a run on a bank, but by the failure of an illiquid securities dealer. This new generation of financial intermediaries were scarcely related to traditional counterparties—their lending model was riskier, and they did not accept deposits. Instead, these intermediaries synchronized their actions with central banks’ interest rate policies, buying more loans if monetary conditions were expansive and asking borrowers to repay loans if these conditions were contractive. They financed their operations in the wholesale money market, and most of their lending activities were to capital market investors rather than potential homeowners. When Lehman Brothers failed, domestic and foreign banks could no longer borrow in the money markets to pay creditors. The Fed soon realized that its lender of last resort activities were incapable of influencing the financial market. The crisis of 2008-09 called for measures beyond Bagehot’s principle. It revealed not only how partial our understanding of the contemporary financial system is, but how inadequate the tools we have available are for managing it.

### Re-Conceptualizing the Contemporary Financial System

Prior to the financial crisis, the emerging hybrid system of shadow banking went largely unmonitored. Shadow banking is a market-based credit system in which market-making activities replace traditional intermediation. A shadow banker acts more like a dealer who trades in new or outstanding securities to provide liquidity and set prices. In this system, short-term liquidity, raised in the wholesale money market, funds long-term capital market assets. The payment system reinforces this hybridity between the capital market and the money market. Investors use capital market assets as collateral to raise funds and make payments. Therefore, the integrity of the payment system depends on the collateral acceptability in securities lending. Since the crisis, collateral has been criticized for rendering financial institutions vulnerable to firesales and loss of asset value. The Fed did not save Lehman Brothers, a securities dealer, because the alternative was likely to have encouraged others to make toxic loans too. Like in Voltaire’s Candide, the head of a general was cut off to discourage the others.

The crisis also revealed the vulnerabilities of contemporary risk management. Modern risk management practices depend largely on hedging derivatives. Hedging is somewhat analogous to taking out an insurance policy; at its heart are derivatives dealers who act as counterparties and set prices. Derivatives, including options, swaps, futures, and forward contracts, reduce the risk of adverse price movements in underlying assets. The crisis exposed their fragile nature—dealers’ willingness to bear risk decreased following losses on their portfolios. These concerns left many firms frozen out of the market, forcing them to terminate or reduce their hedging programs. Rationing of hedging activity increased firms’ reliance on lines of credit. As liquidity was scarce, over-reliance on credit lines further strained firms’ risk management. In the meantime, rising hedging costs prevented them from hedging further. Derivatives dealers were essential players in setting these costs. During the crisis, dealers found it more expensive to finance their balance sheet activities. In return, they increased the fees. As a result of this cycle, firms were less and less able to use derivatives for managing risks.

Most financial economists analyze risk management through cash flow patterns. The timing of cash flow is critical because the value of most derivatives is adjusted daily to reflect their market value (they are mark-to-market). This requires a daily cash settlement process for all gains and losses to ensure that margin (collateral) requirements are being met. If the current market value causes the margin account to fall below its required level, the trader will be faced with a margin call. If the value of the derivatives falls at the end of the day, the margin account of the investors who have long positions in derivatives will be decreased. Conversely, an increase in value results in an increase in the investors’ margin account who hold the long positions. All of these activities involve cash flow.

But in order to properly conceptualize the functioning of contemporary risk management practices, we need to follow in Hyman Minsky’s footsteps and look at business cycles. The standard macroeconomic framing begins from the position of a representative risk-averse investor. Because the investor is risk-averse, they neither buy nor sell in equilibrium, and consequently, there is no need to consider hedging and the resulting cash flow arrangements. By contrast, Minsky developed a taxonomy to rank corporate debt quality: hedge finance, speculative finance, and Ponzi finance. Hedge finance is associated with the quality of the debt in the economy. It occurs when the cash from a firm’s operating activities is larger than the cash needed for its scheduled debt-servicing payments. A speculative firm’s income is sufficient to pay the interest, but it should borrow to pay the principal. A firm is Ponzi if its income is smaller than the amount needed to pay all interest on the due dates. The Ponzi firm must either increase its leverage or liquidate some of its assets to pay interest on time. Within this scheme, hedge finance represents the greatest degree of financial stability.

Minsky’s categorization scheme emphasizes the inherent instability of credit. In periods of economic euphoria, the quantity of debt increases because the lenders and investors become less risk-averse and more willing to make loans that had previously seemed too risky. During economic slowdowns, overall corporate profits decline, and many firms experience lower revenues. This opens the way for a “mania,” in which some in the hedge finance group move into speculative finance, and some firms that had been in speculative finance move into Ponzi finance.

Regulatory Responses to the Crisis: Identifying and Managing Risk

But why should a central banker worry about the market for hedging? After all, finance is inherently about embracing risk. In a financial crisis, however, these risks become systemic. Systemic risk is the possibility that an event at the company level could trigger the collapse of an entire industry or economy. Post-2008 regulatory efforts are therefore aimed at identifying systemic risk before it unravels.

The desire to identify the origins, and nature, of risks, is as old as finance itself. In his widely cited article, Fischer Black distinguished between the risks of complex instruments and the trades that reduce those risks—the “hedges.” But less widely cited is his conviction that financial models, such as the capital asset pricing model (CAPM), are frequently not equipped to separate these risks.

The same argument could be made for identifying systemic risk. To monitor systemic risk, the Fed and other regulators use central clearing, capital standards, and stress-testing. However, these practices are imperfect diagnostic tools. Indeed, clearinghouses may have become the single most significant weakness of the new financial architecture. In order to reduce credit risk and monitor systemic risk, clearinghouses ensure swaps by serving as a buyer to every seller and a seller to every buyer. However, they generally require a high degree of standardization, a process that remains poorly defined in practice. Done correctly, the focus on clearing standardized products will reduce risk; done incorrectly, it may concentrate risks and make them systemic. Standardization can undermine effective risk management if it constrains the ability of investors to modify derivatives to reflect their particular activities.

Regulators also require the banks, including the dealer banks, to hold more capital. A capital requirement is the amount of capital a bank or another financial institution has to have according to its financial regulator. To capture capital requirement, most macroeconomic models abstract from liquidity to focus on solvency. Solvency risk is the risk that the business cannot meet its financial obligations for full value even after disposal of its capital. The models assert that as long as the assets are worth more than liabilities, firms should survive. The abstraction from liquidity risk means that by design, macroeconomic models cannot capture “cash flow mismatch,” which is at the heart of financial theories of risk management. This mismatch arises when the cash flows needed to settle liabilities are not equal to the timing of the assets’ cash flows.

The other tool that the Fed uses to monitor systemic risk regularly is macroprudential stress-testing. The Comprehensive Capital Analysis and Review (CCAR) is an annual exercise by the Fed to assess whether the largest bank holding companies have enough capital to continue operations during financial stress. The test also evaluates whether banks can account for their unique risks. However, regulatory stress testing practice is an imperfect tool. Most importantly, these tests abstract away from over-the-counter derivatives—minimally regulated financial contracts among dealer banks— that might contribute to systemic risk. Alternatively, the testing frameworks may not capture network interconnections until it is too late.

The experience of the 2008 financial crisis has revealed the ways in which our current financial infrastructure departs from our theorization of it in textbooks. It also reveals that the analytical and diagnostic tools available to us are inadequate to identifying systemic risk. The Fed’s current tools reflect its activities as the “financial regulator.” But at present, the Fed lacks tools based on its role as lender of last resort, which would enable it to manage the risk rather than imperfectly monitor it. In the following sections, I examine the importance, and economics, of derivatives dealers in managing financial markets’ risks, and propose a tool that extends the Fed’s credit facilities to derivatives dealers during a crisis.

### Derivatives Dealers: The Risk Managers of First and Last Resort

Over the course of 17 years, Bernie Madoff defrauded thousands of investors out of tens of billions of dollars. In a Shakespearean twist, the SEC started to investigate Madoff in 2009 after his sons told the authorities that their father had confessed that his asset management was a massive Ponzi scheme. Madoff pleaded guilty to 11 federal felony counts, including securities fraud and money laundering.

Bernie Madoff paints a dire portrait of the market making in securities. In world of shadow banking, derivatives dealers are the risk managers of first resort. They make the market in hedging derivatives and determine the hedging costs. Like every other dealer, their capacity to trade depends on their ability to access funding liquidity. Unlike most other dealers, there is no room for them in the Fed’s rescue packages during a financial crisis.

Derivatives dealers are at the heart of the financial risk supply chain for two reasons: they determine the cost of hedging, and they act as counterparties to firms’ hedging programs. Hedgers use financial derivatives briefly (until an opportunity for a similar reverse transaction arises) or in the long term. In identifying an efficient hedging instrument, they consider liquidity, cost, and correlation to market movements of original risk. Derivatives connect the firms’ ability and willingness to manage risk with the derivatives dealers’ financial condition. In particular, dealers’ continuous access to liquidity enables them to act as counterparties. As intermediaries in risk, dealers use their balance sheets and transfer the risks from risk-averse investors to those with flexible risk appetite, looking for higher returns. In the absence of this intervention, risk-averse investors would neither be willing nor able to manage these risks.

This approach towards risk management concentrates risks in the balance sheets of the derivatives dealers. The derivative dealers’ job is to transfer them to the system’s ultimate risk holders. In a typical market-based financial system, investment banks purchase capital market assets, such as mortgage-backed securities (MBS). These hedgers are typically risk-averse and use financial derivatives such as Interest Rate Swaps (IRS), Foreign exchange Swaps (FXS), and Credit Default Swaps (CDS). These derivatives’ primary purpose is to price, or even sell, risks separately and isolate the sources of risk from the underlying assets. Asset managers, who look for higher returns and therefore have a more flexible risk tolerance, hold these derivatives. It is derivatives dealers’ job to make the market in instruments such as CDS, FXS, and IRS. In the process, they provide liquidity and set the price of risk. They also determine the risk-premium for the underlying assets. Crucially, by acting as intermediaries, derivatives dealers tend to absorb the unwanted risks in their own balance sheets.

During a credit crunch, derivatives dealers’ access to funding is limited, making it costly to finance inventories. At the same time, their cash inflow is usually interrupted, and their cash outflow comes to exceed it. There are two ways in which they can respond: either they stop acting as intermediaries, or they manage their cash flow by increasing “insurance” premiums, pushing up hedging costs exactly when risk management is most needed. Both of these ultimately transmit the effects to the rest of the financial market. Higher risk premiums which lower the value of underlying assets could lead to a system-wide credit contraction. In the money market, a sudden disruption in the derivatives market would raise the risk premium, impair collateral prices, and increase funding costs.

The increase in risk premium also disrupts the payment system. Derivatives are “mark-to-market,” so if asset prices fall, investors make regular payments to the derivative dealers who transfer them to ultimate risk holders. A system-wide credit contraction might make it very difficult for some investors to make those payments. This faulty circuit continues even if the Fed injects an unprecedented level of liquidity into the system and pursues significant asset purchasing programs. The under-examined hybridity between the market for assets and the market for risks make derivatives markets the Fed’s concern. There will not be a stable capital valuation in the absence of a continuous risk transfer. In other words, the transfer of collateral, used as the mean of payments, depends on the conditions of both the money market and derivatives dealers.

### Understanding Financial Assets as Collateral

Maintaining the integrity of the payment system is one of the oldest responsibilities of central bankers. In order to do this effectively, we should recognize financial assets for what they actually do, rather than what economists think they ought to do. Most macroeconomists categorize financial assets primarily as storers of value. But in modern finance, investors want to hold financial assets that can be traded without excessive loss. In other words, they use financial assets as “collaterals” to access credit. Wall Street treats financial assets not as long-term investment vehicles but as short-term trading instruments.

Contemporary financial assets also serve new economic functions. Contrary to the present and fundamental value doctrines, a financial asset today is not valuable in and of itself. Just like any form of money, it is valuable because it passes on. Contemporary financial assets are therefore the backbone of a well-functioning payment system.

The critical point is that in market-based finance, the collateral’s market value plays a crucial role in financial stability. This market value is determined by the value of the asset and the price of underlying risks. The Fed has already embraced its dealer of last resort role partially to support the cost of diverse assets such as asset-backed securities, commercial papers, and municipal bonds. However, it has not yet offered any support for backstopping the price of derivatives. In other words, while the Fed has provided support for most non-bank intermediaries, it overlooked the liquidity conditions in the derivatives market. The point of such intervention is not so much to eliminate the risk from the market. Instead, the goal is to prevent a liquidity spiral from destabilizing the price of assets and, consequently, undermining their use as collateral in the market-based credit.