Short sellers must be aware of the potential for a short squeeze.
It's not known who was behind the recent short squeeze and there is no indication that the activity was illegal.
Such an event, known as a short squeeze, could be temporary but painful.
Average investors are also taken for a ride when a company's share price spikes as a result of a short squeeze.
Also, I think there has been a bit of a short squeeze on some of these stocks.
The opposite of a short squeeze is the less common long squeeze.
Traders said a classic "short squeeze" developed in the afternoon.
The announcement makes it appear that a short squeeze was in the works.
The short squeeze seems to have been brought on in part by the actions of bond buyers.
If a short squeeze is brewing, the old shares could have one more run.