SuperinvestorDB tracks what the world’s most-followed investors actually own — straight from their SEC filings — and tries to be honest about what that data can and can’t tell you.
Data sources
•SEC Form 13F — quarterly long US-equity holdings of institutional managers, filed within 45 days of quarter-end.
•SEC Form N-PORT — monthly portfolio reports for registered funds (mutual funds and ETFs).
•Filings are sourced via Financial Modeling Prep’s parsed SEC data; current quotes are used to compute since-filing performance.
Latest filing quarter in our data: Mar 2026. Holdings refresh as new filings post.
The Tier 1–4 framework
Not every 13F carries the same signal. We grade managers by how much their disclosed buys actually mean:
•Tier 1 — Concentrated / activist. Few positions, high conviction. These feed our consensus signal.
•Tier 2 — Quant & multi-strategy. Thousands of hedged, fast-rotating positions. Shown for context, kept out of the signal. Why →