Americans are now parked on a record $7 trillion in money-market funds, earning about 4% while the stock market keeps setting records without them.
Somewhere north of $7 trillion in American savings is earning about 4 percent a year and going absolutely nowhere near the stock market. That is the state of play in late May 2026: money-market fund balances have hit a record, according to the short-term funding monitor maintained by the Office of Financial Research, a division of the U.S. Treasury. At the same time, the S&P 500 notched yet another all-time closing high on May 14, 2026, per daily data tracked by the Federal Reserve Bank of St. Louis, before slipping modestly the following session.
Millions of savers are collecting steady, low-risk interest while equities keep climbing without them. The standoff between record cash and record stock prices has become one of the defining tensions of this market cycle, and neither side shows signs of blinking.
How the cash pile got this big
Money-market funds were a relative afterthought before the Federal Reserve launched its aggressive rate-hiking campaign in March 2022. Total assets in the category sat closer to $4.5 trillion at the time. As the fed funds rate climbed from near zero to a peak target range of 5.25 to 5.50 percent, money-market yields followed, and cash flooded in. Even after the Fed trimmed rates modestly, short-term yields have stayed attractive enough to keep balances growing well into 2026.
The plumbing is simple. Every money-market fund in the country files monthly portfolio holdings with the SEC on Form N-MFP. Those filings show the bulk of assets parked in Treasuries, repurchase agreements, and agency securities. Credit risk is minimal. Returns track prevailing short-term rates almost tick for tick.
Traditional bank accounts have not kept up. The FDIC’s national rate tables for early 2026 show the average savings account paying roughly 0.45 percent, a fraction of what money-market mutual funds offer. That gap explains the continued migration: savers are not just parking idle cash. They are actively choosing the highest-yielding option in the cash-equivalent universe.
What staying in cash has cost, and what it has saved
The opportunity-cost math is hard to ignore. A saver who placed $100,000 in a money-market fund yielding 4 percent a year ago collected roughly $4,000 in interest with virtually no principal risk. The same $100,000 invested in an S&P 500 index fund rode a rally that, depending on the exact entry date, produced a total return in the range of roughly 15 to 20 percent over the trailing 12 months through mid-May 2026, based on index-level closing prices tracked by FRED. The precise figure varies with the entry and exit dates chosen, but the gap over a 4 percent cash yield was substantial by any measure.
But raw returns only tell part of the story. Cash holders also sidestepped every gut-wrenching drawdown along the way. That includes the tariff-driven sell-off in early April 2026 that briefly dragged the index down more than 10 percent from its prior peak before a sharp snapback. For retirees drawing income, or anyone with bills due inside the next two years, the 4 percent money-market yield offered something the stock market could not: a predictable paycheck on their savings.
Who is actually sitting on the sidelines?
The $7 trillion figure is auditable. Who owns it is murkier. The OFR dataset confirms the aggregate but does not break out flows by household income, age, or investor type in its public summaries. A 70-year-old retiree favoring capital preservation and a hedge-fund treasurer managing overnight liquidity look identical in the totals.
Fund-level data offer some texture. Among the largest products are the Fidelity Government Money Market Fund, the Schwab Value Advantage Money Fund, and the Vanguard Federal Money Market Fund, each of which has attracted hundreds of billions in assets. Retail share classes have grown alongside institutional ones, suggesting the cash buildup is broad-based rather than concentrated in a single corner of the market.
The approximate 4 percent yield is consistent with current short-term rate levels. For concreteness, the Vanguard Federal Money Market Fund reported a 7-day SEC yield near 4.2 percent in its May 2026 fund disclosures, while the Fidelity Government Money Market Fund listed a comparable figure in the same range. Yields vary fund by fund depending on weighted average maturity, fee structure, and security mix, and no single official source publishes an all-fund average with exact precision. The 4 percent figure should therefore be read as a reasonable, representative approximation rather than an audited benchmark.
What could unlock the cash
The most obvious trigger is a meaningful Fed rate cut. If the central bank lowers its policy rate by 100 basis points or more, money-market yields would drift toward 3 percent or below, narrowing the spread over bank deposits and making stocks and longer-duration bonds comparatively more appealing.
“The $7 trillion in money funds is often called dry powder, but that label overstates how much of it is truly available to chase stocks,” said Peter Crane, president of Crane Data, a firm that tracks money-fund assets and yields. “A huge slice is institutional liquidity that was never going to buy equities in the first place. The retail portion that is genuinely rate-sensitive is a fraction of the headline number.”
That framing matters. A large share of the balance likely reflects structural demand for liquidity: corporate operating accounts, municipal reserve funds, and retirees who have no intention of buying stocks at any price. The portion that is genuinely sidelined and rate-sensitive is unknowable from public filings alone.
The Fed’s March 2026 Summary of Economic Projections signaled a cautious posture, with most officials penciling in only modest rate reductions through year-end. Until the rate path shifts decisively, or until a market shock resets risk appetite, the tug-of-war between record cash and record stock prices is likely to grind on.
The trade-offs hiding inside a 4 percent yield
For savers earning 4 percent in a money-market fund, the position is defensible, but it is not cost-free. Inflation, running at 2.3 percent on the Bureau of Labor Statistics’ April 2026 Consumer Price Index release, eats into that yield and leaves a real return closer to 1.7 percent. Over multi-year stretches, stocks have historically delivered substantially more, though with far greater volatility along the way.
Financial planners generally recommend keeping three to six months of living expenses in cash-like instruments and investing the rest according to a longer-term allocation. By that yardstick, $7 trillion suggests a lot of Americans are holding more cash than textbook advice would prescribe, whether out of caution, inertia, or a deliberate bet that the rally is overdue for a pullback.
None of those motivations show up in the regulatory filings. What does show up is a hard, auditable number: seven trillion dollars, earning a respectable yield, sitting out a stock market that keeps making new highs. Whether that cash eventually chases equities higher or stays put as a buffer against the next downturn is the question this market cycle has yet to answer.
