For anyone who doesn't understand what happened, he didn't actually over 700k. He got assigned one side of a put spread which took his balance negative and it takes 24h to exercise the other side.<p>As an analogy, imagine you owe friend A money (one side of the spread) and friend B owes you money (other side of the spread). Friend A calls and says pay me back, so you venmo them money, and then you call friend B and ask them to pay you back. Basically, he was caught in that period where the money to friend A left your account, but the money from friend B hadn't settled yet.<p>While it's easy to be mad at Robinhood and blame bad UI, I think it's important to note, that every platform I've traded options on has displayed this situation in the exact same way. I've traded on Schwab in the past and currently use Robinhood and Tastyworks for options trading and all three have given me massive margin calls for this exact same situation that iron themselves out 24 hours later. While Robinhood is the platform in question here, this same thing would have happened almost anywhere else, so I have a hard time blaming Robinhood's UI. Additionally, the negative balance actually triggers the exercise of the second side of the spread, and there's nothing that says the second side of the spread needs to be exercised if his balance was still positive. Because of that, it's not possible (or doesn't make sense) to just say something like, "well if one side is exercised, just do the other right away". Maybe the UI could be improved, but unless a user fundamentally understands what is going on, you're more than likely going to run confusing situations.<p>What I DO blame Robinhood is having pretty much no standard for who they give options trading to. It's been 7 or so years since I had to apply for options trading on Schwab, but the process was fairly in-depth to get anything beyond level 1 options trading (maybe things have changed). When I applied for options trading on Robinhood, it was a few clicks and I had level 3 trading permissions (the highest they allow) with almost no information being verified.<p>Again, I'm sure Robinhood isn't alone in their lax policies around options account approval, but between the way they've built their platform to feel like a game, their targeting of younger investors, and the fact that /r/wallstreetbets talks about them constantly, they have become THE platform for investors who don't fully know what they are doing and they need to take extra precautions to protect their users from themselves.