On Oct. 4, Stash expanded access to eight cryptocurrencies for its more than two million active subscribers in the U.S. through separate crypto accounts. Apex Crypto, a subsidiary of Apex Fintech Solutions, provides the investment infrastructure. Stash first opened crypto access to users with the fully managed Smart Portfolio account type in January, with exposure to bitcoin and ether coming through two trusts managed by digital asset manager Grayscale (like CoinDesk, a unit of Digital Currency Group).