Using a comprehensive dataset of hedge fund 13F filings, we analyze hedge fund trading from 1998-2010 to determine if investor redemptions cause fire sales and stock market disruptions. We find evidence of hedge fund fire sales in the two quarters with the worst stock market performance. During...

Using Form PF filings over 2013–2017, we find that funds maintain higher levels of cash holdings and available borrowing (“liquidity buffers”) when they hold more illiquid assets, have shorter-term commitments from investors and creditors, and when market volatility is greater. We also...

Using a sample of hedge funds and mutual funds, I examine two channels through which asset managers can contribute to systemic risk: the service channel when funds act as liquidity suppliers and the asset liquidation channel when funds act as liquidity demanders. Consistent with the latter...

We give an explicit algorithm and source code for combining alpha streams via bounded regression. In practical applications, typically, there is insufficient history to compute a sample covariance matrix (SCM) for a large number of alphas. To compute alpha allocation weights, one then resorts to...