Mandatory filings for UK hedge funds allow analysis of the effect of managerial employment networks on investment behavior. Employment in the same firm leads to significantly more similar investment behavior in terms of raw returns, abnormal performance (alpha), systematic risk (beta), and...

We document widespread violations of stochastic dominance in the one-month S&P 500 index options market over the period 1986-2002. These violations imply that a trader can improve her expected utility by engaging in a zero-net-cost trade. We allow the market to be incomplete and also imperfect...

We document that leverage-adjusted returns on S&P 500 index call and put portfolios are decreasing in their strike-to-price ratio over 1986-2010, contrary to the prediction of the Black-Scholes-Merton model. We test a large number of plausible unconditional factor models and find that only...

The class action law suit Annie Adams et al - Southern New York, 12-cv-07461, claims that banks increased 6-months USD LIBOR rates on first business days of a month in order to take advantage of mortgage holders due to inflated reset rates on the mortgages. The claims do not seem to be supported...