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How a trillion-dollar hedge fund borrowing spree became Wall Street’s cash cow - Financial Times

Reported by Ft ·Hedgeweek ·Moneycontrol
Oct 8, 2026· 2 min read
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Key Takeaways
  • • Hedge funds have become a major force in the roughly $30 trillion U.S. Treasury market, at a time when some traditional long-term investors have been pulling back.
  • • Hedge funds reportedly held about $2 trillion in cash Treasuries by 2025, according to a headline-level summary of the reporting.
  • • A little-known New York hedge fund led by a former Yale University mathematician has been buying tens of billions of dollars of U.S. Treasuries.
  • • Individual investors hold more than $3 trillion in retail money-market funds, near record levels, representing a large pool of cash that is competing for yield.
  • • The Financial Times frames the expansion of hedge fund borrowing as a profitable business for Wall Street, though the full reporting was not available for detailed verification.
Summary
Hedge funds are playing an increasingly influential role in the U.S. Treasury market, which is roughly $30 trillion in size. According to CNBC's coverage, hedge funds are stepping in at a time when some traditional long-term investors have been reducing their participation, a shift that has drawn attention to the growing weight of leveraged, short-term capital in the market for U.S. government debt. Reporting cited in the research indicates that hedge funds held about $2 trillion in cash Treasuries by 2025.

Individual market activity is also drawing scrutiny. One report highlights a little-known New York hedge fund, run by a former Yale University mathematician, that has been buying tens of billions of dollars of U.S. Treasuries. Its scale illustrates how concentrated positioning in the sovereign debt market has become among a relatively small number of leveraged players.

The Financial Times reporting, titled "How a trillion-dollar hedge fund borrowing spree became Wall Street's cash cow," frames the trend around borrowing and the profits it generates for Wall Street. The full text of that article could not be verified, so the specific borrowing mechanics, counterparties, and financial terms it describes are not confirmed here.

Meanwhile, the broader cash backdrop remains large. Individual investors hold more than $3 trillion in retail money-market funds, close to record levels. That pool of liquidity is a potential source of demand for short-dated government debt, and its size underscores the scale of capital that sits alongside hedge fund activity in Treasury markets.

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Sources

3 outlets

AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Ft How a trillion-dollar hedge fund borrowing spree became Wall Street’s cash cow - Financial Times Hedgeweek Trillion-dollar hedge fund borrowing boom drives Wall Street prime brokerage profits Moneycontrol How a trillion-dollar hedge fund borrowing spree became Wall Street’s cash cow