Hedge fund gross U.S. Treasury (UST) exposures doubled from 2018 to February 2020 to $2.4 trillion, primarily driven by relative value arbitrage trading and supported by corresponding increases in repo borrowing. In March 2020, amid unprecedented UST market turmoil, the average UST trading hedge...

The past couple of decades have seen a significant shift in assets from active to passive investment strategies. We examine the potential effects of this shift on financial stability through four different channels: (1) effects on investment funds’ liquidity transformation and redemption...

We show that when only a few investors contribute a substantial portion of a fund's equity, the probability of large liquidity-driven fund outflows increases because investors' idiosyncratic liquidity shocks are not diversified away. Using confidential regulatory filings, we find the five...

This paper provides evidence of the impact of hedge funds on asset markets. We construct a simple measure of the aggregate illiquidity of hedge fund portfolios, based on the cross-sectional average first order autocorrelation coefficient of hedge fund returns, and show that it has strong and...

We present a framework to identify market responses to the uncertainty regarding both potential hurricane landfall and subsequent economic impact. Stock options of firms with establishments in the landfall region exhibit large, long-lasting increases in implied volatility, reflecting impact...

We present a framework to identify market responses to the uncertainty regarding both potential hurricane landfall and subsequent economic impact. Stock options of firms with establishments in the landfall region exhibit large, long-lasting increases in implied volatility, reflecting impact...

The past couple of decades have seen a significant shift from active to passive investment strategies. We examine how this shift affects financial stability through its impacts on: (i) funds' liquidity and redemption risks, (ii) asset-market volatility, (iii) asset-management industry...

The collapse of Lehman Brothers illustrated the importance of managing prime broker counterparty risks for hedge funds. Liquidity shocks to prime brokers can lead to cycles of deleveraging that produce losses at funds and potentially have harmful effects on financial market function and credit...