Fidelity Says 401(k) Millionaires Jumped 16% to 595,000 in Second Quarter

Fidelity Investments, the country's largest 401(k) recordkeeper, reported 595,000 workplace retirement accounts worth $1 million or more as of June 30, 2025. That's up 16% from 512,000 the previous quarter, according to Fidelity's quarterly retirement analysis.

The average 401(k) balance across all Fidelity participants also hit a record $137,800, up 8% year-over-year. IRA millionaire accounts reached 501,481, and similar gains showed up in 403(b) plans, the retirement accounts commonly used by teachers and nonprofit workers.

Fidelity says the growth is driven by two things: continued contributions from workers and a rebound in the stock market. Most savers kept contributing through market swings rather than pulling back, according to Fidelity's data.

Who actually hits the millionaire mark

The typical 401(k) millionaire in Fidelity's system is about 59 years old and has been saving for roughly 25 years straight. The median balance in that group is $1.4 million, meaning half of them have banked even more than that.

That timeline matters. Gen X and Baby Boomers make up most of the millionaire accounts, which tracks given you need decades of contributions and market compounding to get there. This isn't a group that got lucky on a meme stock. It's people who maxed out contributions, got employer matches, and let the market do its work for 25 years.

One standout data point: among long-term savers, women who contributed consistently for 15 straight years saw their average balance top $501,100 for the first time, according to Fidelity's figures.

Fidelity's overall participant savings rate, combining employee contributions and employer matches, sat at approximately 14.2%. Only 5.5% of participants touched their investment allocations at all during the quarter, meaning most people just left their money in target-date funds and target-date-style defaults and let it ride.

The other side of the numbers

Those 595,000 millionaire accounts are just 2.4% of Fidelity's total 401(k) base of nearly 24.6 million participants. For every account that crossed $1 million, roughly 40 others didn't come close.

The $137,800 average balance, while a record, is still a fraction of what someone needs for a secure retirement after 20 or 30 years of work. A record average doesn't mean most workers are doing great. It means the number went up, and a small group at the top is pulling that average higher.

Fidelity's later data, cited in these reports, showed the millionaire count kept climbing as 2025 went on, reaching 654,000 by later in the year. That's a real trend, not a one-quarter blip.

Two ways to read the same data

One coverage angle, from ABAB News, frames this explicitly as capital concentration: tax-deferred compounding and market gains widening the gap between high-balance savers and everyone else, while average savers stay well below the millionaire threshold. That's a fair read of the numbers. A 2.4% millionaire rate next to a 40-to-1 ratio of non-millionaires is a real gap, and it's worth stating plainly instead of just celebrating the record headline.

But there's a more straightforward explanation sitting right in Fidelity's own numbers: time and consistency. The people hitting seven figures are 59-year-olds who saved for 25 years and didn't touch their allocations. That's the system working as designed. Nobody's stopping the other 24 million participants from doing the same thing over the same time horizon. Younger workers with 25 years still ahead of them aren't behind by definition, they're just earlier in the process.

Both things can be true at once. The wealth concentration at the top of the 401(k) system is real and growing. And the mechanism driving it, decades of steady contributions plus market compounding, is available to anyone who starts early and doesn't cash out.

What's not in the data

None of the three reports break down participation gaps, meaning how many eligible workers aren't enrolled in a 401(k) at all, or address inflation-adjusted comparisons to prior decades. Fidelity's report also doesn't say how many of the 24.6 million participants are near retirement age versus just starting their careers, which matters a lot for judging whether the 97.6% who aren't millionaires are actually behind schedule or simply younger.

Fidelity's full-year 2025 retirement analysis, which would cover whether the 654,000 millionaire count kept climbing or leveled off as markets moved through the back half of last year, should already be available by now given the current date. That report is the next data point worth checking for an updated picture.