Money market funds have adopted a more defensive stance in recent weeks, paring the average life of assets in their portfolios as investors contend with an uncertain outlook for U.S. monetary policy. Industry measures show a clear move toward shorter-dated securities, reflecting caution among managers about where the Federal Reserve is headed.
According to Crane Data, the weighted average maturity - the average time until securities held by a money market fund mature - for the Crane Money Fund Average fell to 38 days for the week ending July 10, down from 42 days a month earlier. The Crane 100 Money Fund Index, which represents funds holding the bulk of industry assets, recorded a similar decline, with weighted average maturity slipping to 40 days in July from 44 days in June.
Fund managers often shorten portfolio maturities when they foresee higher interest rates. Shorter-dated securities mature sooner, giving managers the opportunity to reinvest at higher yields if the Fed raises rates. By contrast, locking into three- or six-month Treasury bills prior to a rate rise can leave funds stuck with lower yields as rates climb.
Complicating the picture for managers are diverging signals about Fed policy. The article notes that a dovish Chair Kevin Warsh could be at odds with more hawkish Federal Open Market Committee members, while softer-than-expected inflation readings support the case for either rate cuts or a prolonged pause. That mix of possibilities is prompting managers to avoid taking on excess duration risk.
Rotation into floating-rate exposure
As inflows into money market funds persist, managers have been deploying some of that cash into floating-rate notes, or FRNs, whose payouts adjust with market rates rather than being fixed. Treasury FRN holdings increased by $32 billion at the end of June to a record $523 billion, illustrating a growing preference for securities that reset with market moves.
"This positioning suggests that money market managers are increasingly favoring floating-rate exposure to capture elevated three-month T-bill yields," said Angelo Manolatos, a macro strategist at Wells Fargo. "Youre not taking duration risk, so if the Fed hikes, your note will reset higher," he added, highlighting the defensive motive behind the shift.
Repo usage rises, but front-end yields weaken
Funds have also boosted their use of repurchase agreements, or repos, which involve lending cash to dealers in exchange for securities that are later repurchased. Crane Data shows repo balances climbed by $68 billion to $3.06 trillion as of June 30, representing 37.2% of total fund holdings.
However, the attractiveness of overnight repos has eased recently. The Federal Reserves reserve management purchases have injected cash into funding markets and reduced the amount of available collateral, a dynamic that has weighed on repo yields. That leaves fund managers weighing an uncomfortable choice: accept unusually low overnight returns or extend maturities and risk being locked into lower yields should Treasury bill rates move higher.
"Money market funds right now are caught between a rock and a hard place," said Gennadiy Goldberg, head of U.S. rates strategy at TD Securities. "They want to be shorter in their weighted average maturities because of the risk of Fed rate hikes, but rates at the very front end of the curve, like repos, are still a bit soggy." Goldberg added that this tension is central to manager decision-making in the near term.
T-bill allocations fall as managers rebalance
Alongside these shifts, money market funds trimmed their allocations to Treasury bills. Crane Data reports a $96 billion reduction in T-bill holdings at the end of June, bringing total bill allocations to $3.3 trillion. Despite the decline, Treasury bills still accounted for 39.9% of total fund holdings.
Wells Fargos Manolatos noted that funds have limited exposure to longer-dated bills while moving into repos, a strategy he described as positioning defensively for a potential rise in rates. The combination of shorter maturities, increased FRN exposure, and heavier repo usage reflects a broader preference for flexibility in a market where the path of policy is uncertain.
Market expectations and outlook
Market pricing continues to reflect some expectation of future Fed tightening. U.S. interest rate futures imply one Fed rate hike in 2026, likely at the December policy meeting, with nearly an 80% probability according to the CME FedWatch tool. That outlook is one of the factors pushing managers toward instruments that can reset quickly in a rising rate environment.
Meanwhile, money market assets remain substantial. Data from the Investment Company Institute show that assets rose to a record of nearly $8 trillion in the first week of July, underscoring the scale of cash parked in these funds and the significance of manager decisions about where to place it.
For now, money market funds appear to be balancing the twin imperatives of avoiding duration risk and seeking usable yields at the front end of the curve. The trade-offs inherent in that balancing act are likely to keep managers focused on instruments that offer rate sensitivity without extended lock-ins until the Feds path becomes clearer.