Finance portals such as Yahoo! Finance have free stock screeners that generate lists of heavily shorted stocks; drilling down into individual stocks displays relevant short-selling information such as the number of shares sold short and the short interest ratios for specific companies. Online resources like MarketBeat provide useful short-selling data such as the largest short interest positions, changes in such positions over time, and short interest ratio. Exchanges such as the New York Stock Exchange and the Nasdaq also publish short interest data for the exchanges as a whole.