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. Each 13F fund page links straight to the underlying SEC filing (form, filing date, accession, CIK).
•“Since quarter-end” columns compare the current quote against the implied quarter-end price (reported market value ÷ shares) — not the fund’s actual cost basis, and not the price on the day the filing became public.
Latest filing quarter in our data: Jun 2026. Holdings refresh as new filings post.
How we aggregate a filing
•A single 13F information table often lists one issuer across many rows (multiple managers, lots, or share classes). We aggregate by ticker/CUSIP into one position, summing shares and value — so a fund’s “positions” count is issuers held, not raw filing rows.
•The dominant class by value sets the security-type label. Options are recovered from the SEC info-table’s put/call flag and tagged CALL / PUT; only long stock counts toward “who owns” a name.
•Consensus and activity signals use Tier 1 concentrated managers only. N-PORT (monthly) mutual funds are shown separately and never mixed into the 13F quarterly count.
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 / high-conviction. Few positions, high conviction (activists included). 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 →