13F holdings follow
SentimentAdvanced
Form 13F is a quarterly report of long U.S. equity holdings by large managers. A follow rule buys names that a stated set of managers have added and sells names they have cut, once the form is public. The filing is late by design. It is a slow holdings overlay, not a real-time copy of a fund, and it does not include shorts, cash, or many derivatives.
Not investment advice. Nothing here is a recommendation to buy or sell anything. Backtests and historical studies are not guarantees, and a rule that worked in one sample can fail in the next. Trading can lose money. Links are for education, not endorsements. Do your own research.
- Rules
- Choose the manager list before looking at results. When a 13F becomes public, compare holdings with the prior filing. Buy the largest new or increased positions and exit names that were sold, with weights you specify. Trade on the public date, not the period-end date. Ignore filings you could not have known about yet.
- Where AI fits
- AI can parse 13Fs, diff them against the previous quarter, and stamp the SEC public date on every order. It should drop amended filings that were not public yet. A model that uses a celebrity manager list chosen after their best years is selecting on the outcome.
- Markets
- U.S. listed equities large enough to appear on 13Fs and liquid enough to trade weeks late.
- Timeframes
- Quarterly, with a lag of weeks after quarter-end.
- Risks
- The lag is the strategy's main flaw. Holdings can be sold before you see them. 13Fs omit shorts and many hedges, so the reported book is not the manager's bet. Crowded copies move the price on the filing day. Manager lists are a backtest degree of freedom.