The shift comes after a decade of double-digit S&P 500 returns fueled by mega-cap technology stocks and the artificial intelligence boom. With equity markets hitting all-time highs, financial advisors are increasingly recommending portfolio rebalancing to lock in gains. Meanwhile, traditional safe havens are underperforming: bank deposits yield well under 1%, and the iShares 20+ Year Treasury Bond ETF (TLT) has averaged a negative 6.7% annual return over the past five years. The iShares 7-10 Year Treasury Bond ETF (IEF) has posted an average annual decline of 1%.
Ultra-Short Bond Funds Capture Massive Inflows
Ultra-short bond funds, which invest in fixed-income securities with maturities under one year, have emerged as a primary beneficiary of this defensive rotation. These funds offer a middle ground between low-yielding cash and volatile long-term bonds. They invest in government bonds, investment-grade corporate debt, asset-backed securities, and commercial paper. According to Morningstar Direct, ultra-short bond ETFs saw inflows of $12.8 billion in July alone.
“Investors have enjoyed one of the strongest equity markets in history, and they’re starting to get worried about downside risk,” said Christopher Coolidge, chief investment officer at Brookwood Investment Group in Phoenix. Brookwood has increased its model portfolios’ cash allocation from 2% in June to roughly 5%, utilizing a basket of ultra-short ETFs that combine treasury exposure, floating rate securities, and option-enhanced income strategies. “We’ve become more defensive as equity markets continue to hit all-time highs,” Coolidge added.
These ultra-short instruments are proving attractive because they add 75 to 110 basis points of yield over money market ETFs with comparable duration and interest rate sensitivity. Morningstar highlights the Baird Ultra Short Bond Fund (BUBIX) and the JPMorgan Ultra-Short Income ETF (JPST) as top choices in the category for 2026.
Money Market ETFs Eliminate Rate Risk
For investors who want to avoid interest rate risk entirely, money market ETFs are gaining traction despite being a relatively new product. The first money market ETF launched in 2024, and only nine currently trade in the U.S. However, these funds are scaling rapidly. From January through July, money market ETFs hauled in $18.7 billion in net inflows, dwarfing the $2.8 billion collected by money market mutual funds.
Assets across the nine money market ETFs totaled $24 billion at the end of July. The ProShares GENIUS Money Market ETF (IQMM) leads the pack with $17.4 billion in assets. While this remains a fraction of the $7.7 trillion held in money market mutual funds, the growth trajectory signals a structural shift in how investors manage liquidity. Net flows into money market ETFs have been positive every month since their inception, except for June and July 2026.
“It’s all about your comfort level,” said Brian Huckstep, chief investment officer of Advyzon Investment Management in Lisle, Illinois. Investors can choose between ultra-short funds that carry marginal rate risk or money market ETFs that eliminate it.
Rebalancing to Preserve Buying Power
Advisors emphasize that the move to short-duration fixed income is not just about market timing, but prudent portfolio rebalancing. The run-up in equities means that many investors’ target asset allocations are off-kilter. Cyrus Amini, chief investment officer at Hyphen Wealth Management in Lafayette, California, uses a combination of short-duration bond funds and money market funds for liquidity. “I don’t see the need to take duration risk in this market,” Amini said. He noted that as long as investments earn slightly above inflation, it is a win.
For clients with near-term liquidity needs, the shift is even more critical. “If you plan to make a down payment on a house in eight months, that money shouldn’t be in the stock market,” said Mike Bisaro, president and chief executive at StraightLine, an investment advisory firm in Troy, Michigan. He noted that ultra-short bond funds and money market funds do a better job of preserving buying power than traditional bank accounts. “They’re at least doing a better job of holding your buying power than a bank where you’re effectively losing money,” Bisaro said.
What Happens Next
The rotation into ultra-short bond funds and money market ETFs will likely accelerate if equity markets show further signs of volatility or if the Federal Reserve signals unexpected rate movements. The long end of the bond market has become much more volatile amid inflation concerns, geopolitical fears, and shifting rate expectations. As long-term bonds remain subject to high volatility in an uncertain rate environment, the structural demand for short-duration liquidity solutions should persist. Investors and advisors will continue prioritizing capital preservation and incremental yield over traditional duration risk, reshaping the fixed-income landscape for the foreseeable future.
— Nadia Okonkwo, business desk, AXO News