Commentary

Commentary

 
 
Posts tagged Financial crisis
Stress tests lack COVID-scale stress

In recent months, the Federal Reserve acted aggressively to support nearly all parts of the U.S. economy. Unprecedented monetary policy actions, both in size and scope, served to maintain market function and the flow of credit. And, while we have misgivings about the Fed’s CARES Act-driven moves to support the nonfinancial sector, we applaud Chair Powell and his colleagues for their quick and decisive actions (see our previous posts here, here and here). This, together with fiscal policy support for individual households and small firms, has kept an awful situation from becoming far worse—at least for now.

But, the Fed’s responsibility extends beyond monetary policy to the regulatory and supervisory arenas: it is obliged to maintain the safety and soundness of the banking system (and, to some extent, of the broader financial system). On this score, and in stark contrast to its actions in 2009, the Board of Governors has come up significantly short. Without full disclosure of the latest stress test results, suspicions will linger about the ability of the largest banks to provide credit to healthy borrowers if the COVID recovery falters. (See our earlier post for details.)

In this post, we examine the results from the Fed’s 2020 assessment of bank capital adequacy published on June 25. Based on the COVID-related sensitivity analysis—for which individual results are unavailable—one-quarter of the 33 banks tested fall below the regulatory minimum in the worst of the three cases. The fact that we can only guess which banks those might be creates suspicion regarding many banks….

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An Open Letter to Randal K. Quarles, Federal Reserve Vice Chair for Supervision

Dear Vice Chair Quarles,

Nearly three years ago, we wrote an open letter congratulating you on your nomination as the first Vice Chair for Supervision on the Board of Governors of the Federal Reserve System. In that letter, we highlight the central mission of ensuring the resilience and promoting the dynamism of the U.S. financial system.

Today we write to express our profound disappointment regarding the plans (expressed in your June 19 speech on “The Adaptability of Stress Testing“) to limit the disclosure of this year’s large-bank stress tests. In our view, failure to publish the individual bank results from the special COVID-19 related “sensitivity analysis” weakens the credibility and effectiveness of the Fed’s stress testing regime.

Consequently, we urge you to reverse course and to announce this week the individual bank sensitivity results, along with the aggregates. To put it bluntly, the point of a supervisory stress test is disclosure. Anything short of full transparency leaves potentially destabilizing questions unanswered.

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COVID-19 Stress Test

The COVID-19 shock is almost surely leading to a larger economic downturn than the Great Financial Crisis of 2007-09. However valuable, neither stress tests nor financial supervision in general has prepared us for a shock of this magnitude.

These developments leave us profoundly concerned that the global financial system lacks the resilience needed to weather what will clearly be a very violent storm. In our view, the most up-to-date information regarding the impact on the financial system of COVID-19 comes from NYU Stern Volatility Lab’s SRISK. By utilizing timely weekly market equity data, rather than less accurate and substantially delayed book-value information, SRISK enables us to gauge the aggregate shortfall of capital in the financial system during a crisis (defined as a 40 percent drop of the global equity market over the next six months). Analogous to a severe stress test, the idea behind SRISK is that an intermediary contributes to fragility to the extent that it is short of capital at the same time that there is a system-wide shortfall (see, for example, here). Just as a forest is more vulnerable to fire during a drought, so the financial system is more vulnerable to a large shock when there is a large aggregate capital shortfall.

In the remainder of this post, we highlight some recent SRISK developments and compare them to those during the 2007-09 crisis. We view these developments as a clear warning to regulators and supervisors that the COVID-19 shock meaningfully threatens financial stability across major jurisdictions….

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FEMA for Finance

Modern financial systems are inherently vulnerable. The conversion of savings into investment—a basic function of finance—involves substantial risk. Creditors often demand liquid, short-term, low-risk assets; and borrowers typically wish to finance projects that take time to generate their uncertain returns. Intermediaries that bridge this gap—transforming liquidity, maturity and credit between their assets and liabilities—are subject to runs should risk-averse savers come to doubt the market value of their assets.

The modern financial system is vulnerable in a myriad of other ways as well. For example, if hackers were to suddenly render a key identification technology untrustworthy, it could disable the payments system, bringing a broad swath of economic activity to an abrupt halt. Similarly, the financial infrastructure that implements most transactions—ranging from retail payments to the clearing and settlement of securities and derivatives trades—typically relies on a few enormous hubs that are irreplaceable in the short run. Economies of scale and scope mean that such financial market utilities (FMUs) make transactions cheap, but they also concentrate risk: even their temporary disruption could be catastrophic. (One of our worst nightmares is a cyber-attack that disables the computer and power grid on which our financial system and economy are built.)

With these concerns in mind, we welcome our friend Kathryn Judge’s innovative proposal for a financial “Guarantor of Last Resort”—or emergency guarantee authority (EGA)—as a mechanism for containing financial crises. In this post, we discuss the promise and the pitfalls of Judge’s proposal. Our conclusion is that an EGA would be an excellent tool for managing the fallout from dire threats originating outside the financial system—cyber-terrorism or outright war come to mind. In such circumstances, we see an EGA as a complement to existing conventional efforts at enhancing financial system resilience.

However, the potential for the industry to game an EGA, as well as the very real possibility that politicians will see it as a substitute for rigorous capital and liquidity requirements, make us cautious about its broader applicability. At least initially, this leads us to conclude that the bar for invoking an EGA should be set very high—higher than Judge suggests….

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Financial Crisis: The Endgame

Ten years ago this month, the run on Lehman Brothers kicked off the third and final phase of the Great Financial Crisis (GFC) of 2007-2009. In two earlier posts (here and here), we describe the prior phases of the crisis. The first began on August 9, 2007, when BNP Paribas suspended redemptions from three mutual funds invested in U.S. subprime debt, kicking off a global scramble for safe, liquid assets. And the second started seven months later when, in response to the March 2008 run on Bear Stearns, the Fed provided liquidity directly to nonbanks for the first time since the Great Depression, completing its crisis-driven evolution into an effective lender of last resort to solvent, but illiquid intermediaries.

The most intense period of the crisis began with the failure of Lehman Brothers on September 15, 2008. Credit dried up; not just uncollateralized lending, but short-term lending backed by investment-grade collateral as well. In mid-September, measures of financial stress spiked far above levels seen before or since (see here and here). And, the spillover to the real economy was rapid and dramatic, with the U.S. economy plunging that autumn at the fastest pace since quarterly reporting began in 1947.

In our view, three, interrelated policy responses proved critical in arresting the crisis and promoting recovery. First was the Fed’s aggressive monetary stimulus: after Lehman, within its mandate, the Fed did “whatever it took” to end the crisis. Second was the use of taxpayer resources—authorized by Congress—to recapitalize the U.S. financial system. And third, was the exceptional disclosure mechanism introduced by the Federal Reserve in early 2009—the first round of macroprudential stress tests known as the Supervisory Capital Assessment Program (SCAP)—that neutralized the worst fears about U.S. banks.

In this post, we begin with a bit of background, highlighting the aggregate capital shortfall of the U.S. financial system as the source of the crisis. We then turn to the policy response. Because we have discussed unconventional monetary policy in some detail in previous posts (here and here), our focus here is on the stress tests (combined with recapitalization) as a central means for restoring confidence in the financial system….

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Italeave: Mother of all financial crises

After years of calm, fears of a currency redenomination—prompted by the attitudes toward monetary union of Italy’s now-governing parties and the potential for another round of early elections—revived turbulence in Italian markets last week. We have warned in the past that an Italian exit from the euro would be disastrous not only for Italy, but for many others as well (see our earlier post).

And, given Italy’s high public debt, a significant easing of its fiscal stance within monetary union could revive financial instability, rather than boost economic growth. Depositors fearing the introduction of a parallel currency (to finance the fiscal stimulus) would have incentive to shift out of Italian banks into “safer” jurisdictions. Argentina’s experience in 2001, when the introduction of quasi-moneys by the fiscal authorities undermined monetary control, is instructive….

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Relying on the Fed's Balance Sheet

Last week’s 12th annual U.S. Monetary Policy Forum focused on the effectiveness of Fed large-scale asset purchases (LSAPs) as an instrument of monetary policy. Despite notable disagreements, the report and discussion reveal a broad (if not universal) consensus on key issues:

In a world of low equilibrium real interest rates and low inflation, policymakers could easily hit the zero lower bound (ZLB) in the next recession.

At the ZLB, the Fed should again use a combination of balance-sheet tools and interest-rate forward-guidance to achieve its mandated objectives of stable prices and maximum sustainable employment (see our earlier post).

Yet, significant uncertainties about the impact of balance-sheet expansion mean that LSAPs may not provide sufficient stimulus at the ZLB.

Fed policymakers should undertake a thorough (and potentially lengthy) assessment of alternative policy tools and frameworks—ranging from negative interest rates to a higher inflation target to forms of price-level targeting—to ensure they remain as effective as possible.

The remainder of this post discusses the challenges of measuring the impact of balance-sheet policies. As the now-extensive literature on the subject implies, balance-sheet expansions ease financial conditions. However, as this year’s USMPF report emphasizes, there is substantial uncertainty about the scale of that impact.... 

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Looking Back: The Financial Crisis Began 10 Years Ago This Week

In his memorable review of 21 books about the 2007-09 financial crisis, Andrew Lo evoked Kurosawa’s classic film, Rashomon, to characterize the remarkable differences between these crisis accounts. Not only were the interpretations in dispute, but the facts were as well: “Even its starting date is unclear. Should we mark its beginning at the crest of the U.S. housing bubble in mid-2006, or with the liquidity crunch in the shadow banking system in late 2007, or with the bankruptcy filing of Lehman Brothers and the ‘breaking of the buck’ by the Reserve Primary Fund in September 2008?”

In our view, the crisis began in earnest 10 years ago this week. On August 9, 2007, BNP Paribas announced that, because their fund managers could not value the assets in three mutual funds, they were suspending redemptions. With a decade’s worth of hindsight, we view this as a propitious moment to review both the precursors and the start of the worst financial crisis since the Great Depression of the 1930s.

But, first things first: What is a financial crisis? In our view, the term refers to a sudden, unanticipated shift from a reasonably healthy equilibrium—characterized by highly liquid financial markets, low risk premia, easily available credit, and low asset price volatility—to a very unhealthy one with precisely the opposite features. We use the term “equilibrium” to reflect a persistent state of financial conditions and note that—as was the case for Humpty Dumpty—it is easy to shift from a good financial state to a bad one, but very difficult to shift back again....

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An Open Letter to the Honorable Randal K. Quarles

Dear Mr. Quarles,

Congratulations on your nomination as the first Vice Chairman for Supervision on the Board of Governors of the Federal Reserve System. We are pleased that President Trump has chosen someone so qualified, and we are equally pleased that you are willing to serve.

Assuming everything goes according to plan, you will be assuming your position just as we mark the 10th anniversary of the start of the global financial crisis. As a direct consequence of numerous reforms, the U.S. financial system—both institutions and markets—is meaningfully stronger than it was in 2007. Among many other things, today banks finance a larger portion of their lending with equity, devote more of their portfolios to high-quality, liquid assets, and clear a large fraction of derivatives through central counterparties.

That said, in our view, the system is not yet strong enough. In your new role, it will be your job to continue to fortify the financial system to make it sufficiently resilient.

With that task in mind, we humbly propose some key agenda items for the first few years of your term in office. We divide our suggestions into five broad categories (admittedly with significant overlap): capital and communications, stress testing, too big to fail, resolution, and regulation by economic function....

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