Determining whether a particular equity is experiencing short selling involves examining specific market metrics and regulatory reports published by financial data platforms and exchanges. Key indicators include the short interest ratio, which measures the total number of open short positions against the average daily trading volume, and the short float percentage, which calculates what portion of the public tradable shares have been borrowed and sold short by bearish traders. Additionally, public exchanges and regulatory bodies periodically release aggregate short sale volume reports, while financial research platforms like Fintel provide granular, up-to-date tracking of short borrow fees, institutional short tracking, and changes in short interest over time.