April 24 (Reuters) - Short interest on the Nasdaq rose 0.5% in mid-April, the exchange said on Friday.
As of April 15, short interest rose to 20,498,266,178 shares, compared with 20,395,670,061 shares as of March 31.
Investors who sell securities "short" borrow shares and then sell them, expecting the stock to fall so they can buy the shares back at the lower price, return them to the lender and pocket the difference.
Shorting can also be part of a hedging strategy.
(Reporting by Caroline Valetkevitch; Editing by Chris Reese)
((caroline.valetkevitch@thomsonreuters.com))