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Alight Solutions 401(k) Index™: May 2026 Observations

Alight Solutions 401(k) IndexTM: February 2026 observations

Markets remained strong in May, but 401(k) plan participants were clearly being cautious about their retirement investments. Trading activity increased modestly, with 0.16% of assets transferred, and 16 of 20 trading days favored fixed income as participants locked in gains and continued rotating out of U.S. equities. 

Flows reflected this defensive tilt, with inflows to bond funds, emerging markets and stable value, while large U.S. equity and company stock saw the most outflows. Despite this shift, overall portfolios remained equity heavy. Average allocations rose to 74.2%, with 71% of contributions going to equities, highlighting a gap between short-term trading behavior and long-term positioning.

May observations:

 

  • On average, 0.011% of 401(k) balances were traded daily.
  • 16 of 20 days favored fixed income funds.

The Alight Solutions 401(k) Index statistics for the month of May:

Index statisticsMay2026 YTD

Total transfers as percentage of starting balance

0.16%

0.56%

# Fixed days

16 (80%)

66 (65%)

# Equity days

4 (20%)

36 (35%)

# Above-normal days1

4

11



Inflows and outflows during the month of May:

  • Net trading inflows were allocated largely across bond funds, emerging markets and stable value.
  • Large U.S. equity, company stock and small U.S. equity had the most net trading outflows.

Asset classes with most trading 

inflows in May

Percentage of inflows

Index dollar value ($mil)

Bond funds

60%

$290

Emerging markets

15%

$74

Stable value12%$57

Asset classes with most trading 

outflows in May

Percentage of outflows

Index dollar value ($mil)

Large U.S. equity

49%

$236

Company stock28%$134
Small U.S. equity8%$39

May investment portfolios:

  • After reflecting market movements and trading activity, average equity allocation increased to 74.2% in May, up 0.3 percentage points from April (73.9%).
  • 71% of contributions went to equities, unchanged from April.

Asset classes with largest percentage

of total balance at the end of May

  Percentage of balance

Index dollar value ($mil)  

Target date funds2

31%

$97,107

Large U.S. equity funds

30%

$93,415

Company stock funds

8%

$25,697

Asset classes with most 

contributions in May

Percentage of contributions

Index dollar value($mil)

Target date funds2

50%

$623

Large U.S. equity funds

23%

$291

International equity funds

7%

$90


Returns for common indices

May

2026 YTD

Bloomberg Barclays U.S. Aggregate Index

0.31%

0.38%

S&P 500 Index

5.26%

11.27%

Russell 2000 Index

4.37%

18.15%

MSCI All Country World ex-U.S. Index (net)

5.03%

14.36%

1  A “normal” level of relative transfer activity is when the net daily movement of participants’ balances, as a percent of total 401(k) balances within the Alight Solutions 401(k) Index™, equals between 0.3 times and 1.5 times the average daily net activity of the preceding 12 months. A “high” relative transfer activity day is when the net daily movement exceeds two times the average daily net activity. A “moderate” relative transfer activity day is when the net daily movement is between 1.5 and 2 times the average daily net activity of the preceding 12 months.

2 Target date funds also include the amounts in target risk funds. The amount in the target risk funds is less than 10% of the total.

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: April 2026 Observations

Trading activity continued to accelerate in April, with four days of above normal1 trading volume.