"I had NKLA credit spreads, where the short legs got assigned. Exercised the long legs the next day immediately but they wouldn't settle until after the weekend. I still got charged 360% interest for 3 days. My account value is only 5K lol. I'm done."
Etrade should eat this, IMHO.
rule #1: Avoid anything on reg sho unless you really know what you're doing.