Short interest is the number of shares that have been sold short but have not yet been covered or closed out. Short selling is when a trader sells shares of a company they do not own, with the hope ...

Buying $100 In ALNY: If an investor had bought $100 of ALNY stock 10 years ago, it would be worth $385.28 today based on a price of $433.41 for ALNY at the time of writing.