[cj]

Challenge accepted. Wealthfront:

https://www.wealthfront.com/blog/cash-account-apy/

https://www.wealthfront.com/blog/wealthfront-isnt-a-bank/ (See section #2)

> Because we broker our deposits, we’re able to offer you access to wholesale interest rates — the interest rates that banks offer to broker-dealers like Wealthfront for deposits, which can be higher than the rates banks offer individual customers. When our partner banks pay a high rate on your deposits, we pass along a high rate to you.

TLDR: Wealthfront gives your money to other banks who pay Wealthfront interest which is passed on to you. All FDIC insured.