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The Aon Hewitt 401(k) Index™

The Aon Hewitt 401(k) Index™ tracks the 401(k) trading activities of nearly 1.3 million participants, representing nearly $160 billion in collective assets.

The information provided herein details observations summarizing monthly 401(k) transfer activity, as well as monthly stock market activity. Aon Hewitt experts are available to discuss the latest 401(k) trading activity.

Members of the media: please contact MacKenzie Lucas for questions about
Aon Hewitt's 401(k) Index.

August 2015 Market Volatility

Data from the Aon Hewitt 401(k) Index shows trading activity in 401(k) plans was markedly higher on Friday, August 21, 2015 and Monday, August 24, 2015 following noteworthy market drops:

  • Friday’s trading activity was 2 times the normal level, while activity on Monday was 7 times the normal level, the third highest day of trading since 2008. Aon Hewitt saw activity return to more “normal” levels since then.
  • Preceding Friday’s market drop, the Aon Hewitt 401(k) Index showed no days of above normal trading in July or the beginning of August.
  • The trading movement on Friday and Monday was out of equities and into fixed income.

Daily Trading Activity Against August 2015 Market Activity

(Click to enlarge)

Recent 401(k) Index™ Observations