When Melvin Capital sold a metric ton of naked shorts on GameStop, no one was there to tell them it wouldn't end up well. It was certainly a risk, but not really a bad one going on fundamentals. They just failed to predict the mob mentality of retail investors.
Of course, those retail investors who got in on Thursday, Friday, or Monday; that seemed like a bad purchase. So bad that Melvin double-downed on their naked short position. There's no way the stock could go up. The fundamentals aren't there. But it did. A lot. And those retail investors made a ton of money.
So, we're at today, where you're saying that it would be a bad time to invest because it won't end well. You, and to some degree Robinhood, are making a prediction on the stock market. You may be right; you may be wrong; but you're definitely not certainly right or certainly wrong. You're making the same mistake anyone who tries to pick stocks does; you're just doing it in reverse.
If I were running Robinhood, I'd be inclined to continue to allow trading*, but perhaps with a popup message with language that legal approved to suggest that people should be certain of what they were doing when creating new positions in high-vol securities and would have 100% margin requirements on high-vol securities now. So, I agree with you that I'd, on balance, prefer to see trading open in these names. I think people should do what they want with their money, even if I think it's stupid and likely to end badly.
At the same time, parabolic moves like this have never once in the history of markets been sustained over a long period of time. It's possible that this will be the first one ever, but I am indeed making a prediction that it will not be. You are correct that I might be wrong about that.
* - All this assumes that my clearing firm would continue clearing the orders, which is uncertain at the moment. If my clearing firm won't book the orders, I literally can't do anything except cajol, plead, or sue them.
Of course, those retail investors who got in on Thursday, Friday, or Monday; that seemed like a bad purchase. So bad that Melvin double-downed on their naked short position. There's no way the stock could go up. The fundamentals aren't there. But it did. A lot. And those retail investors made a ton of money.
So, we're at today, where you're saying that it would be a bad time to invest because it won't end well. You, and to some degree Robinhood, are making a prediction on the stock market. You may be right; you may be wrong; but you're definitely not certainly right or certainly wrong. You're making the same mistake anyone who tries to pick stocks does; you're just doing it in reverse.