Before the 2008 stock market crash, 52% of Americans aged 35 or younger were invested in the stock market. As of last year, the number had dropped to 37%, according to Gallup.

Expand chart Data: Yahoo! Finance; Chart: Lazaro Gamio/Axios

Why it matters: The poll was conducted last year but attracted new attention in the last few days because the U.S. bull market run reached 10 years on Saturday. People whose total working-life experience is the crash years appear to be much less likely to trust their savings to stocks.