13F Filings & Institutional Ownership
What the largest professional investors — hedge funds, and famous names like Berkshire Hathaway — actually hold, straight from their own required disclosures.
Any institutional investment manager overseeing more than $100M in US equities must file a Form 13F with the SEC within 45 days of each quarter's end, disclosing their long equity holdings as of that quarter-end date. InsiderWolf's Smart Money tab parses these filings directly, showing which tracked superinvestors disclosed a position in a given ticker in their latest filing.
The 45-day filing lag is the single biggest limitation: by the time a 13F is public, the position it describes could be up to a quarter-and-a-half stale — a manager could have already exited the entire position by the time you're reading about them holding it. 13Fs also only cover US-listed long equity positions; they say nothing about short positions, options, non-US holdings, or the fund's actual current conviction level.
- Treat 13F data as a lagging, historical disclosure, not a live view of what a fund holds today.
- A large fund's 13F can list thousands of positions from many different sub-strategies and managers within the same firm — a single line item isn't necessarily a top conviction bet from the person whose name is on the fund.
- Multiple well-regarded managers independently holding the same stock is generally read as more informative than any single manager's position alone — the same clustering logic as insider buying.