Private asset managers have been tantalized for years about the $29 trillion in Americans’ retirement accounts. Donald Trump just made it easier for them to get a slice.

Millions of Americans saving for retirement through 401(k) accounts could have the option of putting their money in higher-risk private equity and cryptocurrency investments.

President Trump on Thursday signed an executive order that could significantly expand everyday investors’ access to some of the more opaque and riskier corners of financial markets.