https://apnews.com/5e2c7316cc9426c43f48b6c5946c4d1a > NEW YORK (AP) — More workers may soon be able to stake some of their 401(k) retirement savings to bitcoin, as cryptocurrencies crack even deeper into the mainstream. > Retirement giant Fidelity said Tuesday that it’s launched a way for workers to put some of their 401(k) savings and contributions directly in bitcoin, potentially up to 20%, all from the account’s main menu of investment options. Fidelity said it’s the first in the industry to allow such investments without having to go through a separate brokerage window, and it's already signed up one employer that will add the offering to its plan later this year.