Here is a top 20 list of the current most shorted stocks with the highest short interest as of the last update across all stock exchanges. Most exchanges do month end reporting. So it is constantly changing but is delayed in reporting. Be aware that the NASDAQ short interest is updated twice a month. Short interest data is reported on mid-month and end-of-month settlement dates for NASDAQ listed stocks.
These are the companies that have had the highest percentage of their share float borrowed to sell short over the past month. These short positions reveal built in buying pressure as the short stocks must be bought back at some point to cover. These stocks are the ones in the highest danger of short squeezes as the bears may have overstayed their welcome. Selling short goes against the long term trend in the overall stock market and getting on the most shorted stock list can be a bullish signal for a stock signaling it is about to rally higher.