They don't necessarily force you to buy it back now, but they ask you to deposit more money to cover your "on-paper" losses. The broker usually has some discretion in when to do this, but there are also regulations for how far they can let it go.
The shorts collectively have losses on paper of $35bn+, which is a lot of money even for well-capitalized Wall Street funds.
The shorts collectively have losses on paper of $35bn+, which is a lot of money even for well-capitalized Wall Street funds.