AlphaYou13F Filings Explained: How to Track Hedge Fund Moves
What a 13F filing is, why it's reported on a 45-day lag, and how to actually use hedge fund disclosures without overestimating how "current" they are.
Direct answerA 13F is a quarterly filing required from any institutional investor managing over $100 million, disclosing their U.S. equity holdings — but it's filed up to 45 days after quarter-end, so it always shows a stale snapshot, never current positions.
- Hedge funds, mutual funds, and other institutional managers above the $100M threshold. It covers long equity positions only — not shorts, not most derivatives, not international holdings.
- By the time you see a 13F, the fund may have already exited the position. Treat 13Fs as a picture of quarterly strategy and conviction, not a live trading signal.
- Watch for new positions (a fund entering a name for the first time), size changes (doubling down vs. trimming), and consistency across multiple quarters — a single quarter tells you less than a trend.
Who Has to File
Hedge funds, mutual funds, and other institutional managers above the $100M threshold. It covers long equity positions only — not shorts, not most derivatives, not international holdings.
The Lag Is the Whole Story
By the time you see a 13F, the fund may have already exited the position. Treat 13Fs as a picture of quarterly strategy and conviction, not a live trading signal.
What's Actually Useful in One
Watch for new positions (a fund entering a name for the first time), size changes (doubling down vs. trimming), and consistency across multiple quarters — a single quarter tells you less than a trend.
Where AlphaYou Fits In
AlphaYou surfaces new 13F filings the moment they're public and flags meaningful position changes, so you're not manually cross-referencing quarter-over-quarter filings yourself.
FAQ
How current is 13F data?
It's always at least one quarter and up to 45 days old by the time it's public — never real-time.
Do 13Fs show short positions?
No — 13Fs only require disclosure of long equity holdings, not shorts or most other instruments.