In RH everyone who opens an account starts as an Instant amount.
The Instant means any security sold you can immediately use that cash.
Normally you can't go that. You have to wait 3 days for it to settle in the clearing House. The Instant accounts are using margin to make the cash instantly available.
Another small example. Robinhood gave me one share of GE when I joined. I didn’t want it, so I sold it and withdrew the money. I initiated the withdrawal request yesterday for $10.69. It’d be amusing to me to find they would have been fine if I only withdrew $10.68.
The Instant means any security sold you can immediately use that cash.
Normally you can't go that. You have to wait 3 days for it to settle in the clearing House. The Instant accounts are using margin to make the cash instantly available.