For people with Fidelity accounts, put it in one of these which you have to manually purchase but Fidelity autosells to cover debits and trades on the account.
SPRXX ($0.01 minimum to buy) 7 day average yield 2.00% APY
FZDZZ (To buy it the first time requires $100,000 but as long as you have any position, you can buy $0.01 7 day average yield 2.12% APY
For Charles Schwab customers, there is SVWXX ($0.01 minimum to buy) 7 day average yield 2.03% APY
Wealthfront as the footnote on their webpage states "FDIC insurance is not provided until the funds arrive at the program banks."