We provide some new tools to evaluate trading strategies. When it is known that many strategies and combinations of strategies have been tried, we need to adjust our evaluation method for these multiple tests. Sharpe Ratios and other statistics will be overstated. Our methods are simple to...

We present interview evidence from financial executives that highlights how thinking about culture in a quantitative way and making continuous investments in culture can amplify success, improve firm value, and help employees thrive in the new world of work. By reporting financial executives’...

We study how secular culture affects firm behavior when formal institutions fall short. We find that firms more exposed to alcohol-related sin culture exhibit more earnings management and lean their operations more toward local business partners. Tests using latitude and snow/temperature as...

We conduct in-depth interviews of senior executives representing over 20% of the market capitalization of the U.S. equity market to understand: (i) the importance, antecedents and consequences of corporate culture; (ii) the mechanisms that underlie the creation and effectiveness of corporate...

Ninety-two percent of the 1,348 North American executives we survey believe that improving culture would increase firm value. A striking 84% believe they need to improve their culture. But how can that be achieved? Our paper provides some guidance. First, we directly link culture to financial...

We examine whether information manipulation by firms may reflect fundamental cooperation conventions induced by social norms in China. Consistent with this notion, we find that China’s leading social norms related to alcohol consumption and social drinking enhance earnings manipulation. An...

We recently conducted a comprehensive survey that analyzes how senior financial executives make decisions related to performance measurement and voluntary disclosure. In particular, we ask CFOs what earnings benchmarks they care about and which factors motivate executives to exercise discretion,...

Hundreds of papers and hundreds of factors attempt to explain the cross-section of expected returns. Given this extensive data mining, it does not make any economic or statistical sense to use the usual significance criteria for a newly discovered factor, e.g., a t-ratio greater than 2.0....

When evaluating a trading strategy, it is routine to discount the Sharpe ratio from a historical backtest. The reason is simple: there is inevitable data mining by both the researcher and by other researchers in the past. Our paper provides a statistical framework that systematically accounts...

We study information substitutability in the financial market through a quasi-natural experiment: the pandemic-triggered lockdown that has hampered people's physical interactions hence the ability to collect, process, and transmit soft information. Exploiting the cross- sectional and time-series...