Is short interest self-reported, and therefore unreliable? Short interest is not self-reported. The float and shares outstanding we use are sourced from Capital IQ, which is one of the top firms that provide this data. We get this data directly from those agencies on a daily or twice-weekly basis.

For Canadian, Australian, and Hong Kong markets, the short interest is published by the regulatory agencies of those countries. We do not source short interest from a single broker. This is the official data and covers a broad spectrum of the market. The Short Interest figures we provide are sourced directly from the stock exchanges (NASDAQ, NYSE, NYSE American, NYSE Arca, CBOE, and IEX) and FINRA. Where does Fintel get its data? We source our short interest data from a variety of providers. Note that short interest is published twice-monthly, on a schedule set by FINRA. The data is organized by frequency of updates, with intraday data at the top (short shares availability, short borrow fee rate), daily data (short volume, fails-to-deliver) in the middle, and the slowest updated data (short interest) at the bottom. This short interest tracker provides a variety of short interest related data, sourced from a variety of partners.