Evidence Pack: How 401(k)s Actually Performed Over the Last 13 Months

In a June 23 speech at a Mack truck plant in Macungie, Pennsylvania, President Donald Trump made a bold declaration about the financial health of American workers. He claimed that over the past 13 months, the "typical 401(k)" retirement account had grown by almost $30,000. [1] The statement was designed to highlight the undeniable stock market rally that has characterized the first half of his second term, framing the macroeconomic gains as a direct windfall for everyday citizens. [3][1][3]

The claim quickly caught the attention of economists and independent fact-checkers, who sought to verify whether the average American saver had truly seen such a massive financial leap. PolitiFact evaluated the statement and rated it "Mostly False," pointing out that while the market has indeed surged, the specific $30,000 figure is mathematically disconnected from the reality of a "typical" account. [1][1]

However, beneath the political back-and-forth lies a genuinely uplifting financial story. While the $30,000 figure may be exaggerated for the median worker, the actual evidence from the nation's largest retirement plan administrators reveals that American workers are currently experiencing one of the most robust periods of wealth generation in recent memory. [2][2]

To understand the true state of retirement savings, analysts look to primary data from firms like Fidelity Investments, which manages more than 25 million corporate defined-contribution accounts. According to Fidelity's Q1 2026 Retirement Analysis, the average 401(k) balance stood at $141,000 as of March 31, 2026. [2][2]

When measuring the growth over the roughly 15-month period from December 31, 2024, to March 31, 2026—a timeline closely mirroring the President's 13-month window—the average 401(k) balance increased by $9,454. [1] While this is roughly one-third of the claimed $30,000, a nearly $10,000 increase in an average retirement account over just five quarters represents exceptional financial momentum for the middle class. [5][1][5]

The discrepancy between the political rhetoric and the actual data comes down to the math of percentages versus raw dollars. The Standard & Poor's 500 index, a broad measure of the U.S. stock market, has indeed performed spectacularly, rising approximately 24% between Trump's second inauguration in January 2025 and late June 2026. [3][3]

But a 24% market return does not automatically translate to a $30,000 gain for the typical worker. Mark Williams, a finance lecturer at Boston University's Questrom School of Business, notes that to achieve a $30,000 increase purely from market performance during this window, an investor would need a starting balance of at least $200,000. [1][1]

Data shows that only 10% to 20% of U.S. adults hold a 401(k) balance of that size. [1] For the vast majority of savers, particularly younger workers and those in the middle class, their baseline balances are simply not large enough to generate $30,000 in passive market gains over a single year, no matter how hot the stock market runs. [5][1][5]

Furthermore, a 401(k) "gain" is not solely the result of Wall Street performance. The $9,454 average increase tracked by Fidelity includes the actual cash that employees deferred from their paychecks, as well as the matching funds provided by their employers. [1][1]

This highlights the most encouraging finding in the recent retirement data: Americans are saving at unprecedented levels. In the first quarter of 2026, the total savings rate for 401(k) participants—combining both employee deferrals and employer matches—reached a record 14.4%. [2] This figure is edging remarkably close to the 15% benchmark that financial advisors have long recommended for long-term retirement security. [5][2][5]

Workers are taking active steps to secure their futures, with nearly one in five participants increasing their contribution rates during the first quarter of the year. [2] Much of this positive behavior is driven by automated plan designs, such as auto-enrollment and auto-escalation, which seamlessly bump up a worker's savings rate by 1% each year without requiring manual intervention. [6][2][6]

Employers are also stepping up to the plate. The average quarterly employer contribution amount hit an all-time high of $2,080 in Q1 2026, surpassing the previous peak set a year earlier. [4] These matching funds represent essentially "free money" for workers, accelerating the compounding effect of their investments without requiring any additional sacrifice from their take-home pay. [5][4][5]

The compounding effect of these record contributions and the surging stock market is creating a new class of wealthy retirees. Despite brief periods of market volatility, the total number of "401(k) millionaires"—individuals with a balance of $1 million or more in their workplace plan—surged by 26% year-over-year, reaching 645,000 by the end of March 2026. [4][4]

The average 401(k) millionaire is roughly 59 years old and has been consistently investing in the same employer plan for 25 years. [2] Their success underscores the core principle of retirement investing: long-term consistency and steady contributions ultimately matter more than capturing the perfect 13-month market window. [5][2][5]

For younger generations, the foundation is already being laid. More than 20% of Generation Z workers are now contributing to Roth 401(k)s, which allow for tax-free withdrawals in retirement, and the vast majority are utilizing target-date funds that automatically adjust their risk exposure over time. [2][2]

While fact-checkers play a vital role in ensuring that political figures use precise statistics, the broader economic reality remains a victory for the American worker. [1] The $30,000 claim may have failed the strict mathematical test for the "typical" saver, but the underlying trend it sought to highlight is demonstrably true. [3][1][3]

With average balances up 11% year-over-year, record-breaking contribution rates, and employers matching at historic highs, the U.S. retirement system is functioning exactly as intended. [2] For the millions of Americans diligently setting aside a portion of their paycheck each week, the last 13 months have indeed been a period of significant and measurable financial progress. [6][2][6]