What 13F Filings Don't Show (Shorts, Cash, Timing and More)
A 13F filing shows only a manager’s long positions in US-listed “Section 13(f) securities” on one day per quarter. It does not show short positions, cash, most bonds, shares traded only abroad, the prices paid or when trades happened — so it is a partial, delayed snapshot, not a full portfolio.
Not in a 13F
- Short positions and options the manager wrote
- Cash, most bonds, mutual fund shares and non-US-listed shares
- Trade dates, purchase prices and returns
- Very small positions (under 10,000 shares and under $200,000) — optional
- Positions granted temporary confidential treatment
1. Short positions
The SEC instructs managers not to report short positions and not to net them against long positions. A fund that is long 1 million shares and short 1 million shares of the same stock still reports a 1-million-share long position. For a long/short hedge fund, the 13F can therefore look far more bullish than the real portfolio.
2. Options the manager wrote
Puts and calls the manager holds may be reported (with the underlying shares), but options it wrote are not reported. See how options distort 13F readings.
3. Cash, bonds and other assets
Only securities on the SEC’s Official List of Section 13(f) Securities belong in a 13F: mainly US exchange-traded stocks, ETFs, closed-end funds and certain convertibles, options and warrants. Cash, Treasury bills, most corporate bonds, mutual fund shares, private companies, real estate and derivatives such as swaps that are not on the list are absent. That is why the “total value” of a 13F can be much smaller than a firm’s assets under management.
4. Shares that trade only outside the US
A stock listed only in London, Tokyo or Toronto is not reported. Foreign companies appear only when their shares or ADRs trade on a US exchange. Managers with large international books can look very different on their 13F than in their investor letters.
5. When trades happened and at what price
A 13F shows holdings at quarter-end. If a fund bought in week one and added again in week twelve, you see only the final share count. Positions opened and closed inside the same quarter never appear. The filing also contains no purchase price; the value field is a quarter-end market value.
6. How old the data is
Managers have 45 days after quarter-end to file. A filing made on the deadline is already 45 days old, and it remains the latest public snapshot until the next one arrives — by then the data can be roughly four and a half months old. Check deadlines in the 13F calendar.
7. Small positions
A manager may omit a position if it holds fewer than 10,000 shares and the position is worth less than $200,000. Both conditions must be met; many managers report these positions anyway.
8. Positions under confidential treatment
A manager can ask the SEC to keep certain positions confidential, for example while it is still building a stake or holding an open risk-arbitrage position. Initial requests can cover three, six, nine or twelve months. If the request is denied or the confidential period ends, the manager must file an amendment within six business days that adds the positions. That is why a 13F-HR/A sometimes reveals a large stake months after the quarter.
9. Performance and intentions
13Fs do not report returns, fees, leverage or the manager’s reasons. Dollar values are reported by the filer, and the SEC’s acceptance of a filing does not verify its accuracy.
What this means for readers
- Treat a 13F as evidence of what was held on one date, not as a live portfolio or a trading signal.
- Compare the same quarter across managers; during filing season some will still show the prior quarter.
- Check for amendments before concluding that a fund sold or never owned something.
Thinking of mirroring a fund? Read Should you copy a superinvestor’s 13F portfolio? first.
Source: SEC Form 13F FAQ, questions 7, 30, 39–43, 57a and 58 (accessed November 6, 2026). Educational content, not investment advice.