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Alight Solutions 401(k) IndexTM: December 2025 Observations

Alight Solutions 401(k) IndexTM: November 2024 Observations

December was a slow trading month for retirement plan investors, according to the Alight Solutions 401(k) IndexTM. On average, 0.007% of balances were traded daily, the lowest level since September 2023. There were no days of above- normal1 trading activity.

December observations:

 

  • On average, 0.007% of 401(k) balances were traded daily.
  • 16 of 22 days favored fixed income funds.



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


Index statistics

December

2025 YTD

Total transfers as percentage of starting balance

0.09%

1.93%

# Fixed days

16 (73%)

192 (77%)

# Equity days

6 (27%)

58 (23%)

# Above-normal days1

0

44


Inflows and outflows during the month of December:

•    Bond funds received more than half of all net trading inflows.

•    Outflows were primarily from company stock and large U.S. equity funds.

Asset classes with most trading 

inflows in December

Percentage of inflows

Index dollar value ($mil)

Bond funds

58%

$149

International equity funds

15%

$37

Target date funds2

13%

$33

Asset classes with most trading 

outflows in December

Percentage of outflows

Index dollar value ($mil)

Company stocks

37%

$96

Large U.S. equity funds

27%

$71

Money market funds

16%

$42


December investment portfolios:

  • After reflecting market movements and trading activity, average asset allocation in equities increased from 73.1% in November to 73.2% in December.
  • 70.1% of contributions went to equities in December.

Asset classes with largest percentage

of total balance at the end of December

  Percentage of balance

Index dollar value ($mil)  

Target date funds2

31%

$92,794

Large U.S. equity funds

30%

$89,093

Company stock funds

7%

$21,871

Asset classes with most 

contributions in December

Percentage of contributions

Index dollar value($mil)

Target date funds2

50%

$603

Large U.S. equity funds

22%

$267

International equity funds

7%

$86


Returns for common indices

December

2025 YTD

Bloomberg Barclays U.S. Aggregate Bond Index

-0.15%

7.30%

S&P 500 Index

0.06%

17.88%

Russell 2000 Index

-0.58%

12.81%

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

3.00%

32.39%

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: 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™.

Alight Solutions 401(k) IndexTM: January 2026 Observations

January saw light trading activity among retirement plan investors, according to the Alight Solutions 401(k) Index™.

Alight Solutions 401(k) IndexTM: Fourth Quarter 2025 Observations

Retirement plan trading was minimal throughout the fourth quarter of 2025, according to the Alight Solutions 401(k) IndexTM.