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Working Paper
Investor Concentration, Flows, and Cash Holdings : Evidence from Hedge Funds
We show that when only a few investors own a substantial portion of a hedge fund's net asset value, flow volatility increases because investors' exogenous, idiosyncratic liquidity shocks are not diversified away. Using confidential regulatory filings, we confirm that high investor concentration hedge funds experience more volatile flows. These hedge funds hold more cash and liquid assets, which help absorb large, unexpected outflows. Such funds have to pay a liquidity premium and generate lower risk-adjusted returns. Investor concentration does not affect flow-performance sensitivity. These ...
Working Paper
Reaching for Duration and Leverage in the Treasury Market
We show substantial variation in mutual funds' use of Treasury futures, both over time and across funds. This variation from mutual funds drives much of the time series variation in aggregate Treasury futures open interest, including over 60% of the recent rise in Treasury futures positions. We provide evidence these Treasury futures positions are largely attributable to mutual funds “reaching for duration†in order to track the duration of a benchmark index with high cash Treasury exposure. Specifically, we show mutual funds use futures to fill the gap between their portfolio and ...
Discussion Paper
Decomposing Hedge Funds' U.S. Treasury Exposures
Between 2023 and September 2025, large hedge funds' gross U.S. Treasury exposures doubled to $4.0 trillion, comprising $2.4 trillion in long exposure and $1.6 trillion in short exposure. This growth outpaced that of the broader Treasury market, with hedge funds' Treasury securities holdings increasing from about 4.5 percent to about 8.5 percent of total outstanding Treasuries.
Working Paper
Credit Supply and Hedge Fund Performance: Evidence from Prime Broker Surveys
Constraints on the supply of credit by prime brokers affect hedge funds' leverage and performance. Using dealer surveys and hedge fund regulatory filings, we identify individual funds' credit supply from the availability of credit under agreements currently in place between a hedge fund and its prime brokers. We find that hedge funds connected to prime brokers that make more credit available to their hedge fund clients increase their borrowing and generate higher returns and alphas. These effects are more pronounced among hedge funds that rely on a small number of prime brokers, and those ...