Riskier firms typically borrow at higher rates than safer firms because investors require compensation for taking on more risk. However, since 2009 this relationship has been turned on its head in the massive BBB corporate bond market, with risky BBB-rated firms borrowing at lower rates than their safer BBB-rated peers. The resulting risk materialized in an unprecedented wave of “fallen angels” (or firms downgraded below the BBB investment-grade threshold) at the onset of the COVID-19 pandemic. In this post, based on a related Staff Report, we claim that this anomaly has been driven by a combination of factors: a boost in investor demand for investment-grade bonds associated with the Federal Reserve’s quantitative easing (QE) and sluggish adjustment of credit ratings for risky BBB issuers.
The Funding Privilege of Prospective Fallen Angels
The BBB segment of the corporate bond market has ballooned since the Global Financial Crisis, as shown by the chart below. The amount outstanding of BBB-rated corporate bonds has more than tripled since 2009 to account for more than half of all investment-grade debt in 2020, up from 33 percent in 2008. The growth of the BBB market has been particularly pronounced among issuers hovering just above the investment-grade threshold of BBB, firms at risk of becoming fallen angels upon a downgrade. Notably, these prospective fallen angels experienced a substantial reduction in their bond financing costs even as their balance sheets became more fragile.
The Stock of Bonds Outstanding Issued by BBB-Rated Firms Tripled in Size from 2009 to 2018
Sources: S&P Capital IQ; Thomson Reuters.
Note: This chart shows the evolution of the stock outstanding of corporate bonds, grouped by issuer rating category.
The chart below shows the bond spread between downgrade-vulnerable and non-downgrade-vulnerable issuers by rating (see the associated working paper for a formal definition of downgrade vulnerability). Prospective fallen angels paid 13 basis points less to borrow in the corporate bond market as compared with safer BBB-rated issuers. If prospective fallen angels had been downgraded below the BBB rating, their funding costs would have risen by around $300 billion over the period from 2009 to 2019, according to our back-of-the-envelope calculations. This phenomenon is unique to BBB-rated issuers and particularly pronounced from 2013 to 2016, a period coinciding with a rapid, QE-driven expansion of the Federal Reserve’s balance sheet. We do not observe a similar subsidy in the high-yield corporate bond market (for corporate bonds rated below BBB), in equity markets, or in the corporate loan market.
Prospective Fallen Angels Pay Lower Bond Financing Costs than Safer BBB-Rated Issuers, Leading to around $300 Billion in Savings on Bond Financing Costs from 2009 to 2019
Sources: Mergent; Thomson Reuters.
Note: This chart shows bond spreads between downgrade-vulnerable and safer firms within each rating category from 2009 to 2019.
The Outsized Demand for Bonds Issued by Prospective Fallen Angels Is Driven by QE and the Role of Credit Ratings
The emergence of the prospective fallen angel subsidy amid the Fed’s elevated QE purchases isn’t a coincidence. Investors with the greatest exposure to QE (through their holdings of securities that were eventually purchased by the Federal Reserve) increased their demand for bonds issued by prospective fallen angels, lowering the financing costs of those firms. Investors that tend to hold investment-grade bonds, such as insurance companies, had a more pronounced surge in QE-induced demand. Prospective fallen angels met this demand by issuing bonds, largely to finance mergers and acquisitions (M&A).
M&A activity was particularly pronounced for prospective fallen angels and served two purposes. It allowed prospective fallen angels to delay downgrades and helped them grow their market share. Both of these forces further increased the demand for bonds issued by prospective fallen angels. In our working paper, we document that following M&A activity, there is a significant divergence between the “fundamental” rating and the actual rating, defined as the difference between an issuer’s credit rating as implied by its balance sheet and income statement (through the so-called Z”-score) and its observed credit rating. M&A announcements are usually accompanied by rosy forecasts about synergies and growth, and, more importantly, a promise to reduce the debt taken on to finance the acquisition. Data indicate that most of these projections were, ex-post, not realized.
Prospective Fallen Angels Increase Their Market Share, Affecting Competing Firms
The M&A-led growth in the market share of prospective fallen angels is sizable. The chart below shows that these firms roughly doubled their market share from 2013 to 2019, a dynamic entirely driven by issuers engaging in M&A activity. This dominance comes at the cost of competing firms, who suffer from the presence of prospective fallen angels in their markets. The growth in the market share of prospective fallen angels results in lower employment, investment, sales growth, and product markups for competing firms.
Prospective Fallen Angels Doubled Their Market Share from 2013 to 2019
Sources: Compustat; Thomson Reuters.
Note: This chart shows the share of sales by all firms in Compustat, grouped by rating and downgrade-vulnerability.
The Unprecedented Wave of Fallen Angels at the Onset of the COVID-19 Pandemic
The early stages of the COVID-19 crisis exposed the vulnerability of prospective fallen angels. The volume of prospective fallen angels’ debt that was downgraded in just the first few weeks of 2020 was five times larger than the volume of similar downgrades during the entire Global Financial Crisis, as shown in the chart below. In our paper, we show that these downgrades were almost entirely driven by prospective fallen angels that had previously engaged in M&A. This unprecedented wave of fallen angels ended following the Federal Reserve’s April 9, 2020 announcement that the Federal Reserve-established facilities designed to purchase corporate bonds would include those issuers downgraded from BBB between March 22, 2020, and April 9, 2020.
Downgrades in 2020:Q1 Were Five Times Larger than Those during the Entire Global Financial Crisis
Sources: Compustat; Thomson Reuters.
Note: This chart shows the debt of prospective fallen angels downgraded, at an annual frequency from 2007 to 2020.
Lessons for the Future
In many respects, the growth of risky investment-grade corporate bonds may be a desired outcome of monetary policy, as investors demand riskier assets in response to QE. Our findings suggest that market frictions—such as the reliance on credit ratings and desire for higher yields by investment-grade investors—interact with stimulus policies, contributing to capital misallocation and the build-up of vulnerabilities in the corporate sector. These important side effects may need to be factored in when considering the design of QE programs in the future.
Viral V. Acharya is a professor of finance at New York University Stern School of Business.
Ryan Banerjee is a principal economist at the Bank for International Settlements.
Matteo Crosignani is a senior economist in the Federal Reserve Bank of New York’s Research and Statistics Group.
Tim Eisert is an associate professor of finance at Erasmus University.
Renée Spigt is a Ph.D. candidate at Erasmus University.
The views expressed in this post are those of the authors and do not necessarily reflect the position of the Federal Reserve Bank of New York or the Federal Reserve System. Any errors or omissions are the responsibility of the authors.