US Stock Market: Money market funds shorten maturities as Fed rate uncertainty drives cautious positioning

Money market funds are adopting a more defensive stance by shortening the average maturity of their portfolios as uncertainty over the U.S. Federal Reserve's interest rate path persists, according to the latest industry data reviewed by Reuters.

The weighted average maturity (WAM) of the Crane Money Fund Average, a broad gauge of the industry, declined to 38 days in the week ended July 10 from 42 days a month earlier. Similarly, the Crane 100 Money Fund Index, which tracks funds managing the majority of industry assets, saw its WAM fall to 40 days in July from 44 days in June.

According to Reuters, the shift towards shorter maturities reflects uncertainty over the Fed's policy outlook. While softer-than-expected U.S. inflation has strengthened expectations for rate cuts or an extended pause, uncertainty remains over the future direction of monetary policy and the balance of views within the Federal Open Market Committee.


Money market fund managers generally reduce portfolio maturities when they anticipate the possibility of higher interest rates. Holding shorter-dated securities allows funds to reinvest more quickly at potentially higher yields if borrowing costs increase, while longer-dated Treasury bills could leave investors locked into lower returns.

The cautious positioning comes even as money market funds continue to attract strong inflows. Assets under management climbed to a record of nearly $8 trillion during the first week of July, according to data from the Investment Company Institute cited by Reuters.

Floating-rate notes gain popularity
Reuters reported that fund managers have increasingly directed fresh inflows into floating-rate notes (FRNs), whose coupon payments adjust with prevailing market interest rates. Holdings of Treasury FRNs rose by $32 billion at the end of June to a record $523 billion.

Wells Fargo macro strategist Angelo Manolatos said in a Reuters report that the positioning indicates that managers are favouring floating-rate exposure to benefit from elevated three-month Treasury bill yields while avoiding duration risk associated with fixed-rate securities.

Money market funds also increased allocations to repurchase agreements (repos), which involve lending cash to dealers against securities. Crane Data showed repo holdings rose by $68 billion at the end of June to $3.06 trillion, accounting for 37.2% of total money fund assets.

However, Reuters reported that the attractiveness of overnight repos has weakened in recent weeks. Reserve management purchases by the Federal Reserve have injected liquidity into funding markets while reducing the supply of available collateral, putting downward pressure on repo yields.

Managers face difficult trade-off
According to Reuters, analysts say money market funds are now balancing two competing risks. Remaining heavily invested in overnight instruments limits returns because of softer repo yields, while extending maturities could expose funds to lower yields if Treasury bill rates rise following any future Fed tightening.

Reuters also reported that money market funds reduced Treasury bill holdings by $96 billion at the end of June to $3.3 trillion, although Treasury bills still represented nearly 40% of total fund assets.

Manolatos told Reuters that managers have trimmed exposure to longer-dated Treasury bills while increasing allocations to repos as part of a broader defensive strategy for a potentially higher-rate environment.

Interest rate futures currently indicate markets expect one Federal Reserve rate hike in 2026, most likely at the December policy meeting, with nearly an 80% probability, according to the CME FedWatch tool cited by Reuters.