Investors are shifting away from long-dated Treasuries and into the shortest-duration instruments available, with Treasury bill ETFs pulling in roughly $51 billion in inflows. These funds hold government debt maturing in three months or less, allowing money managers to trade duration risk for instruments that function similarly to a high-yield savings account.
BlackRock’s iShares 0-3 Month Treasury Bond ETF, trading under the ticker SGOV, has driven much of this trend. The fund has taken in approximately $49 billion in net inflows, pushing its assets under management past $104 billion. In early June 2026, SGOV recorded $1.8 billion in inflows during a single session.
Yields, spreads, and long-term outflows
Funds such as the SPDR Bloomberg 1-3 Month T-Bill ETF (BIL) provide yields of roughly 3.5% on a 30-day SEC basis, accompanied by tight bid-ask spreads of 0.01%. This configuration offers investors competitive returns alongside low price volatility and minimal trading friction.
Conversely, long-duration bond funds have experienced significant capital withdrawals. The iShares 20+ Year Treasury Bond ETF (TLT) has registered $15 billion in outflows since September 2024.
Competition among asset managers
Major asset managers are heavily competing for capital within the ultrashort bond category. While BlackRock's SGOV leads the market, State Street's BIL maintains a prominent position, and Vanguard has also entered the sector with its 0-3 Month Treasury Bill ETF (VBIL), which has gathered assets quickly since its launch.
The broader T-bill ETF and ultrashort bond categories achieved record-breaking monthly inflows in March 2026. Because these ETFs track the Federal Reserve’s policy rate, their yields adjust rapidly with Fed actions, making them attractive cash substitutes for corporate treasurers and financial advisors.
Broader market implications
The outflow of capital from long-duration products exerts upward pressure on long-term yields, increasing borrowing costs for corporations, the US government, and homebuyers. These yields influence mortgage rates, corporate financing, and equity valuations.
The ongoing expansion of ultrashort product offerings by major financial institutions indicates that asset managers view this demand as a structural trend rather than merely a cyclical trade.
