Retirement savers saw their account balances climb to unprecedented levels during the second quarter of 2026, according to new data from Fidelity Investments. The average 401(k) balance reached $155,800 as of June 30, a 10.5% increase from the previous quarter and the largest quarterly jump since late 2020.
However, this growth fell short of the broader market's performance. The S&P 500 delivered a total return of 15.2% during the same three-month period, marking its strongest quarterly showing in six years. This means that while retirement accounts benefited from the equity rally, they captured only a portion of the market's gains.
Fidelity's analysis, which draws on data from over 55 million accounts, revealed that the average balance increase was influenced by more than just investment returns. Contributions, withdrawals, participant turnover, and shifts in asset allocation all played a role in shaping the final numbers. Despite this, the data underscores the positive impact of the stock market's performance on retirement savings.
Contribution Rates Hold at Record Highs
One notable highlight was the stability of contribution rates. The total 401(k) contribution rate remained at 14.4% for the second consecutive quarter, matching a record high. This figure comprises 9.6% from employee contributions and 4.8% from employer matches. Fidelity's analysis suggests that the record balances were driven primarily by market gains rather than a sudden surge in payroll deductions.
Sharon Brovelli, president of workplace investing at Fidelity, commented, "Workers continue to prioritize their financial future, saving at record levels." The data shows that over 81% of savers received the maximum employer match, while an additional 12.1% increased their contribution rate during the quarter.
Across Account Types, Growth Was Widespread
The uptick was not confined to 401(k) plans. The average 403(b) balance, typically used by educators and non-profit employees, rose 11.5% to $145,000. Meanwhile, the average individual retirement account (IRA) balance increased 10% to $144,523. These figures indicate that the market rally benefited savers across various retirement vehicles.
Younger workers experienced particularly strong gains. Millennials saw their average 401(k) balance jump 14.2% in the quarter and 26.1% over the past year. Generation Z participants showed a notable preference for Roth 401(k)s, with 21.9% opting for this after-tax contribution option.
Millionaire Accounts on the Rise
The number of retirement millionaires also surged. Fidelity reported 769,000 401(k) accounts with balances exceeding $1 million, up from 654,000 in the previous quarter. IRA millionaires increased to 684,140 from 571,622. These figures highlight the long-term benefits of consistent saving and market participation.
However, there are signs of financial strain among some savers. The proportion of participants with outstanding 401(k) loans rose slightly to 19.5% from 19.2% in March. Hardship withdrawals also increased to 3% of participants, up from 2.6% a year earlier. These trends suggest that while many are saving well, others are facing economic pressures.
Market Context and Implications
The quarterly performance of the S&P 500, which surged 15.2%, was fueled by a broad equity rally. This strong market environment has been a key driver of retirement account growth, but it also raises questions about sustainability. Fidelity's data presents averages, which can be skewed by high-balance accounts; the median saver may see different results.
Market downturns remain a risk. A pullback could erode recent gains, and the impact of loans or withdrawals can diminish the power of compounding over time. Despite these concerns, the overall picture is positive, with retirement savers continuing to prioritize their long-term financial health.
As the market evolves, retirement plan participants and asset managers will be watching closely to see if these trends persist. The data underscores the importance of regular contributions and staying invested through market cycles.
