Savings behavior also contributed to the record balances

Corroborated by 2 sources from 2 publishers

globalgeneral19h ago

TL;DR

CNBC 21324812

https://www.cnbc.com/2026/09/03/401k-ira-retirement-balances-leakage-fidelity.html

Yahoo Finance News

https://finance.yahoo.com/markets/articles/fidelity-401-k-balances-hit-171914179.html