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Money and the Measurement of Total Factor Productivity

Journal of Financial Stability 2019 42, 84-89 open access
Firms have greatly increased their cash holdings since the mid-1990s. These holdings have an opportunity cost; i.e., allocating firm financial capital into monetary deposits means that investment in real assets is reduced. Traditional measures of Total Factor Productivity (TFP) do not take into account these holdings of monetary assets. Given the recent large increases in these holdings in the U.S. and other advanced economies, it is expected that adding these monetary assets to the list of traditional sources of capital services will reduce the TFP of the business sector. We measure this effect for the U.S. corporate and non-corporate business sectors.

Assessing targeted macroprudential financial regulation: The case of the 2006 commercial real estate guidance for banks

Journal of Financial Stability 2017 30, 209-228
In January 2006, federal regulators issued guidance requiring banks with specific high concentrations of commercial real estate (CRE) loans to tighten managerial controls. This paper shows that banks with concentrations in excess of the thresholds set in the guidance subsequently experienced slower growth in their CRE portfolios than can be explained by changes in bank or economic conditions. Moreover, banks above the CRE thresholds tended to have slower commercial and industrial loan growth but faster household loan growth following issuance of the guidance. The results highlight the potentially broad influence that portfolio-based macroprudential regulation might have on bank behavior.

Liquidity provision during the crisis of 1914: Private and public sources

Journal of Financial Stability 2015 17, 22-34
Caught between the end of the National Banking Era and the beginning of the Federal Reserve System, the crisis of 1914 provides an example of a banking panic avoided. We investigate how this outcome was achieved by examining data on the issues of Aldrich-Vreeland emergency currency and clearing house loan certificates to New York City institutions that identify the borrower and the quantity requested for each type of temporary liquidity measure. The extensive provision of temporary credit to a wide array of financial intermediaries was, in our opinion, essential to the successful alleviation of financial distress in 1914. Empirical results indicate an important role for clearing house loan certificates that is distinct from the influence of Aldrich-Vreeland emergency currency issues.

Uncertainty of uncertainty and firm cash holdings

Journal of Financial Stability 2021 56, 100922 open access
We examine the impact on firm cash holdings of uncertainty of uncertainty, measured as the ex post volatility of economic policy uncertainty. Using the news-based index developed by Baker et al. (2016) for twenty-two countries, we find that, when there is greater volatility of economic uncertainty, firms hold more cash. Our results are robust to controlling for a host of firm-level and country-level factors. Consistent with Baker et al. (2016), we consider that less economic policy uncertainty is associated with more investment; and so the real-option value of cash is sensitive to the possibility of a future desirability of investment. Therefore, when there is greater expected volatility of uncertainty, measured under rational expectations as the recent ex post volatility of uncertainty, firms will hold more cash. We also find that the volatility of economic policy uncertainty is much more economically significant in determining firm cash holdings than economic policy uncertainty itself. Therefore, our paper not only adds to the literature on uncertainty and cash holdings, but also, importantly, to the limited literature in finance on the impact of uncertainty of uncertainty.

A stablecoin that’s actually stable: A portfolio optimization approach

Journal of Financial Stability 2025 81, 101458 open access
Stablecoins seek to address the high price fluctuations of unbacked cryptocurrencies, such as Bitcoin and Ether. However, recent studies as well as the collapse of stablecoin USTC (Terra) cast doubt on the stability of stablecoins. Using well-known Markowitz portfolio optimization methods, we combine five leading stablecoins into a global minimum variance portfolio that represents a stable aggregate stablecoin (SAS). We find that SAS is much more stable than its constituent stablecoins. Also, in a stress test adding USTC to the portfolio, SAS remains stable with a narrow price range over time. Importantly, the construction of SAS using modern diversification methods has practical implications for the ongoing development of central bank digital currencies (CBDCs).

Taming the Basel leverage cycle

Journal of Financial Stability 2016 27, 263-277 open access
We investigate a simple dynamical model for the systemic risk caused by the use of Value-at-Risk, as mandated by Basel II. The model consists of a bank with a leverage target and an unleveraged fundamentalist investor subject to exogenous noise with clustered volatility. The parameter space has three regions: (i) a stable region, where the system has a fixed point equilibrium; (ii) a locally unstable region, characterized by cycles with chaotic behavior; and (iii) a globally unstable region. A calibration of parameters to data puts the model in region (ii). In this region there is a slowly building price bubble, resembling the period prior to the Global Financial Crisis, followed by a crash resembling the crisis, with a period of approximately 10–15 years. We dub this the Basel leverage cycle. To search for an optimal leverage control policy we propose a criterion based on the ability to minimize risk for a given average leverage. Our model allows us to vary from the procyclical policies of Basel II or III, in which leverage decreases when volatility increases, to countercyclical policies in which leverage increases when volatility increases. We find the best policy depends on the market impact of the bank. Basel II is optimal when the exogenous noise is high, the bank is small and leverage is low; in the opposite limit where the bank is large and leverage is high the optimal policy is closer to constant leverage. In the latter regime systemic risk can be dramatically decreased by lowering the leverage target adjustment speed of the banks. While our model does not show that the financial crisis and the period leading up to it were due to VaR risk management policies, it does suggest that it could have been caused by VaR risk management, and that the housing bubble may have just been the spark that triggered the crisis.

Stock price crash risk and firms’ operating leverage

Journal of Financial Stability 2024 71, 101219
We extend Jin and Myers’s (2006) model to derive the relation between stock price crash risk and operating leverage (i.e., the fraction of fixed costs in total costs). The model predicts that (1) firms’ operating leverage decreases as stock price crash risk increases and (2) the negative effect of crash risk on operating leverage is more pronounced when firms are closer to the crash threshold or when managers face higher costs of stock price crashes. We empirically test the model predictions using a large sample of manufacturing firms in the US and find consistent results. Further analysis shows that higher levels of crash risk lead to a less sticky cost behavior. In addition, crash risk–driven operating deleveraging effectively reduces stock return volatility and enhances operating performance in subsequent years. Collectively, our findings reveal that crash-prone firms adopt a more flexible cost structure to delay stock price crashes and mitigate adverse outcomes.

Isolating defensive corporate ESG effects: Evidence from purely domestic anti-COVID-19 measures

Journal of Financial Stability 2024 71, 101220
Few studies investigate whether ESG mitigates the harmful effects of changes in firms’ external environments. We evidence that ESG mitigated the impact of COVID-19 work-from-home and workplace prescriptions amongst several other pandemic-related government regulatory interventions, even when controlling for firm size. In a novel approach, we apply scrutiny of firms to restrict our cross-national sample to only firms with no cross-border trade, that is, explicitly domestically focused operational processes irrespective of the endpoint of corporate sales, enhancing methodological robustness. Consequently, we isolate an ESG effect. Results indicate the existence of a premium during the onset of each analysed national pandemic experience, particularly pronounced for those corporations that had achieved more substantiative ESG-based preparation and development before the onset of the COVID-19 pandemic.