Institutional ownership (SEC 13F)

Large investment managers must disclose their US stock holdings each quarter on SEC Form 13F, revealing which companies big institutions own.

Institutional ownership is the share of a company held by big investors — mutual funds, pension funds, hedge funds, and asset managers like BlackRock or Vanguard. US managers overseeing more than $100 million must file a Form 13F with the SEC within 45 days of each quarter’s end, listing their reportable US equity positions. This makes it possible to see which famous investors hold a given stock.

High institutional ownership can signal that professional investors have scrutinized and backed a company, and 13F filings are widely watched to track what managers like Berkshire Hathaway are buying and selling. But 13Fs are a snapshot filed with up to a 45-day lag, cover only long US equity positions, and following them blindly ignores that a manager’s goals and timeframe may differ entirely from yours.

stocks-llm ingests official SEC 13F filings and matches holdings to companies in its catalog, shown with the report period. It presents this as disclosure evidence, never as a recommendation to follow any manager.

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Informational only — NOT financial advice. This is an educational definition, not a recommendation to buy or sell anything. Metrics on stocks-llm are delayed data and may be missing or stale. Always verify information independently and consult a qualified financial professional before making any investment decision.