How more than 100% of the shares can be shorted.
Posted on: January 28, 2021 at 00:15:02 CT
JeffB
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Someone owns shares. He puts them out for loan for a fee or his trading platform does.
Someone who wants to short the stock borrows the stock for an ongoing interest fee (which can be quite high annualized), with a promise to return it, and sells it to someone else. If the price goes down he can buy it back for less than he purchased it and return it to the person (not necessarily the same persons) and pockets the profit.
But before he returns it, the person he sold it to can loan it out to another person who is shorting the stock.
If that person does shorts it and sells it to another person that stock has been shorted twice. 200% if it was all of the stock outstanding.