Higher rates plus worries about geopolitics and market valuations nudged many investors toward cash equivalents and other short-term plays. By August 26, 2026, the Investment Company Institute put money market fund assets at nearly $8 trillion. These vehicles do not move around much in price, which is comforting, but parking too much on the sidelines can make long-term goals tougher to hit.
For years, yields on CDs, money market accounts and Treasury bills were barely worth a glance. That changed as rates rose and 3 month T bill yields pushed above 5.5% in 2023 before easing into the 3.5% to 4.0% range. The Federal Reserve took the lead by hiking sharply in 2022 and 2023 before shifting to reductions in 2024 and 2025. Cash still mixes liquidity with income nicely, but it is wiser to decide how much you need than to let a temporary yield steer a long-term plan.
When markets sink, plenty of investors shift to cash to dodge swings. Across 2022, the Fed pushed interest rates higher, and over a 10-month span the S&P 500 Index dropped 25%. That duo made a flight to safety feel sensible.
The flip side shows up in the rebound. Between January 1, 2023 and August 28, 2026, the S&P 500 produced a total return exceeding 111%, far above what cash-like holdings offered. "While people became comfortable with higher savings yields, over time, they'll find they are likely better off diversifying into long-term assets such as investment-grade bonds and equities," says Rob Haworth, who serves as senior investment strategy director at U.S. Bank Asset Management Group.
For money intended to work over years, a diversified mix typically has more growth potential than cash alone. "Investors earn returns from taking on uncertainty or risk," says Tom Hainlin, the national investment strategist at U.S. Bank Asset Management Group. "While short-term returns are not guaranteed, markets typically reward long-term patient investors for lending money to a business or government entity () or participating in a corporation's future growth ()."
What comes next for interest rates matters if you hold a lot of cash. "Investors should be aware that as the Fed lowers interest rates, yields on cash-equivalent instruments fall," Haworth says. "That results in an even bigger opportunity cost when leaving long-term money tied up in short-term investments." In late 2024, the Fed reduced its policy rate by 1 percentage point; in 2025 it made three additional 0.25 percentage-point cuts.
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After mid 2024, 3 month T bill yields generally trended lower. More recently, resilient growth and persistent inflation have reduced confidence in Fed cuts for 2026 and raised the possibility of an increase. Futures imply one to two 0.25% increases by December 2026, and two to three more by mid 2027. Watch inflation, employment and Fed policy, because changes there can move cash yields quickly.
Good process helps avoid whipsaw decisions. "It's important to regularly rebalance a portfolio to reflect how market performance has changed your asset mix and restore your intended allocation based on your risk tolerance, time horizon and goals," Haworth says.
Give every dollar a job. First, hold enough for current expenses and expected needs over roughly the next year, where access is the top priority. Second, earmark money for specific goals such as a down payment and align the investment to the timing and importance of that goal. That two bucket setup trims excess "just in case" cash and can make it simpler to put remaining assets to work for the long run.
Goal focused money that does not need full, instant liquidity may fit options with higher yields and small compromises on access and price steadiness. Potential choices include money market funds, certificates of deposit and short-term bonds. Each carries different risks, so weigh liquidity, principal stability and income before you choose.
This is not an all or nothing decision. Cash can handle near term spending, cushion volatility and provide stability in nominal value, but over long stretches it has historically struggled to keep up with inflation. Stocks and bonds introduce price movement, yet they typically offer more purchasing power growth over time. The through line: match cash to real needs, and use a rules based plan to keep the rest invested, diversified and rebalanced.
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