I wouldn't recommend using stock ETFs for an emergency fund. SGOV is a reasonable option, it's basically just doing a 1-3 month Treasury ladder for a charge of

I wouldn't recommend using stock ETFs for an emergency fund. SGOV is a reasonable option, it's basically just doing a 1-3 month Treasury ladder for a charge of 0.2%, and slightly less frustrating liquidity. (So right now you'd get like 5.2% with SGOV, vs 5.4% with treasuries)