Average US household allocations to stocks (^DJI, ^IXIC, ^GSPC) are climbing to record highs. As equity markets continue to break new ground, this upward momentum has led to a major boom in the amount of 401(k) millionaires. But how long will this trend continue and keep investors in the market?

Morning Brief host Madison Mills examines trends in household stock allocations as part of today's Chart of the Day.

For more expert insight and the latest market action, click here to watch this full episode of Morning Brief.

This post was written by Luke Carberry Mogan.