Currency carry trades exploiting violations of uncovered interest rate parity in G10 currencies deliver significant excess returns with annualized Sharpe ratios equal to or greater than those of equity market factors (1990–2012). Using data on out-of-the-money foreign exchange options, I compute returns to crash-hedged portfolios and demonstrate that the high returns to carry trades are not due to peso problems. A comparison of the returns to hedged and unhedged trades indicates crash risk premia account for at most one-third of the excess return to currency carry trades.
Journal of Financial Intermediation201423(3), 400-435
We examine changes in banks’ market-to-book ratios over the last decade, focusing on the dramatic and persistent declines witnessed during the financial crisis. The extent of the decline and its persistence cannot be explained by the delayed recognition of losses on existing financial instruments. Rather, it is declines in the values of intangibles – including customer relationships and other intangibles related to business opportunities – along with unrecognized contingent obligations that account for most of the persistent decline in market-to-book ratios. These shifts reflect a combination of changed economic circumstances (e.g., low interest rates reduce the value of core deposits; meager growth opportunities reduce the value of customer relationships) and changed regulatory policies. Together, these changes in the business environment since the financial crisis have led investors to associate little value with intangibles. For example, changing market perceptions of the consequences of leverage have affected the way investors value banks; prior to the crisis, higher leverage, ceteris paribus, was associated with greater value (reflecting the high relative cost of equity finance), but during and after the crisis, as default risk and regulatory concerns came to the fore, lower leverage was associated with greater value. Reflecting the rising importance of regulatory risks (e.g., the uncertain consequences of the Volcker Rule), after controlling for other influences, dividend payments (a signal of management and regulatory perceptions of the persistence of financial strength) matter for market prices much more after the crisis, while increases in recurring fee income matter less.
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The Review of Economics and Statistics201496(2), 214-228
We use the unique regulatory environment of the pharmaceutical industry to examine how potential competition affects generic drug pricing. Our identification strategy exploits a provision of the Hatch-Waxman Act that awards 180 days of marketing exclusivity to the first valid generic drug applicant against the holder of a branded drug patent. In smaller drug markets, we find that price falls in response to an increase in potential competition. We also find that few manufacturers enter these markets, indicating this price reduction is an effective deterrent. In contrast, we find that generic incumbents accommodate entry in larger drug markets.
While stock options are commonly used in managerial compensation to provide desirable incentives, they can create adverse incentives to distort the choice of investment risk. Relative to the risk level that maximizes firm value, call options in a compensation contract can induce too much or too little corporate risk-taking, depending on managerial risk aversion and the underlying investment technology. We show that inclusion of lookback call options in compensation packages has desirable countervailing effects on managerial choice of corporate risk policies and can induce risk policies that increase shareholder wealth. We argue that lookback call options are analogous to the observed practice of option repricing.
In the 1980s, many US cities initiated programs reserving a proportion of government contracts for minority-owned businesses. The staggered introduction of these set-aside programs is used to estimate their impacts on the self-employment and employment rates of African American men. Black business ownership rates increased significantly after program initiation, with the black-white gap falling 3 percentage points. The evidence that the racial gap in employment also fell is less clear as it depends on assumptions about the continuation of preexisting trends. The black gains were concentrated in industries heavily affected by set-asides, and they mostly benefited the better educated.
The Review of Economics and Statistics201496(2), 376-381
This paper introduces a new confidence interval (CI) for the autoregressive parameter (AR) in an AR(1) model that allows for conditional heteroskedasticity of a general form and AR parameters that are less than or equal to unity. The CI is a modification of Mikusheva's (2007a) modification of Stock's (1991) CI that employs the least squares estimator and a heteroskedasticity-robust variance estimator. The CI is shown to have correct asymptotic size and to be asymptotically similar (in a uniform sense). It does not require any tuning parameters. No existing procedures have these properties. Monte Carlo simulations show that the CI performs well in finite samples in terms of coverage probability and average length, for innovations with and without conditional heteroskedasticity.
Journal of Accounting and Economics201458(2-3), 173-200
Earnings asymmetric timeliness captures both accrual and operating cash flow (CFO) asymmetric timeliness. Because recognition of operating cash flows does not reflect differential verification thresholds for recognizing unrealized gains versus losses, CFO asymmetry adds noise or bias to tests of conditional conservatism. We show that CFO asymmetry is predictable in the cross-section, and varies systematically with life-cycle characteristics. Removing CFO from earnings and using accruals-based measures of asymmetric timeliness eliminates several biases that prior studies have attributed to other sources. Moreover, accrual asymmetric timeliness varies in the cross-section as theory predicts. Going forward, we recommend researchers use accruals-based asymmetric timeliness measures when testing for conditional conservatism.
We study reputation incentives in the director labor market and find that directors with multiple directorships distribute their effort unequally based on the directorship's relative prestige. When directors experience an exogenous increase in a directorship's relative ranking, their board attendance rate increases and subsequent firm performance improves. Also, directors are less willing to relinquish their relatively more prestigious directorships, even when firm performance declines. Finally, forced Chief Executive Officer departure sensitivity to poor performance rises when a larger fraction of independent directors view the board as relatively more prestigious. We conclude that director reputation is a powerful incentive for independent directors.