Well, here is a public page (with just GME) that proves the point that they can and do apply requirements to individual stocks, anyway: https://www.tdameritrad

Well, here is a public page (with just GME) that proves the point that they can and do apply requirements to individual stocks, anyway: https://www.tdameritrade.com/td-ameritrade-trading-restrictions-stocks.page https://www.tdameritrade.com/td-ameritrade-trading-restricti... Here's another with GME and AMC: https://www.schwab.com/margin-updates https://www.schwab.com/margin-updates But there are also lots of others you never heard of, that aren't mentioned.