Stocktoria
What Is a 13F Filing?
A 13F (Form 13F-HR) is a report that large investment managers must file with the U.S. SEC every quarter, listing the U.S. stocks they hold. Any institution managing over $100 million has to file one.
It’s why you can see what Warren Buffett’s Berkshire Hathaway, Michael Burry’s Scion, or Citadel owned — their positions become public record.
What it shows
- Each U.S. equity position: company, shares held, and dollar value
- As of the quarter’s end
What it doesn’t show
- It’s delayed — managers have up to 45 days after quarter-end to file, so holdings can be 1–4 months stale by the time you see them.
- Long positions only — it excludes short bets, cash, bonds and most non-US holdings, so it’s not the full picture.
Used carefully, 13Fs are great for studying how respected investors are positioned. Browse investor portfolios on Stocktoria, and every company page lists its notable institutional holders.