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Alight Solutions 401(k) Index™: 20 years of insights

Since its inception in 1997, the Alight Solutions 401(k) Index™ has provided a front row seat to the trading and investing behavior of millions of workers. Over the past 20 years, two major trends have emerged:

  • 401(k) portfolio allocations have changed dramatically

  • Trading activity has steadily decreased except when market corrections occur

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Related Insights


Alight Solutions 401(k) IndexTM: First Quarter 2026 Observations

Retirement plan trading remained steady throughout most of the first quarter of 2026, with a brief increase during March that included three above-normal1 trading days, according to the Alight Solutions 401(k) Index™.

Alight Solutions 401(k) IndexTM: March 2026 Observations

Trading activity picked up in March, with three above-normal trading days. Activity leaned heavily toward fixed income, with net inflows concentrated in stable value, money market and bond funds.

Alight Solutions 401(k) IndexTM: February 2026 Observations

Trading activity remained light in February, with participants making relatively modest moves and favoring fixed income on most trading days, according to the Alight Solutions 401(k) Index™.