13F Filing
Also known as: Form 13F, 13F
A 13F is a quarterly SEC filing in which large institutional investment managers disclose their U.S. equity holdings, giving companies a window into who owns their stock.
A 13F filing is a report that institutional investment managers with at least $100 million in qualifying U.S. equity assets must file with the SEC every quarter, disclosing their holdings.
What it reveals
For an investor relations team, 13Fs are a primary tool for tracking institutional ownership. They show which funds bought, sold, or held the stock over the prior quarter, helping companies understand and target their shareholder base.
The limitation
13Fs are filed up to 45 days after quarter end and exclude short positions and many non-U.S. holdings, so they offer a delayed and partial picture. They are still one of the few public windows into who owns a company.