When are 13F filings due?

Within 45 days after the end of each calendar quarter, so around mid-February, mid-May, mid-August and mid-November.

Who has to file a 13F?

Institutional investment managers with investment discretion over $100 million or more in Section 13(f) securities.

Does a 13F show short positions?

No. It reports long holdings, so it isn't a full picture of a fund's portfolio.

Learn · SEC filings

What is a 13F filing?

Form 13F is a quarterly report of holdings that an institutional investment manager files with the SEC. A manager must file once it has investment discretion over $100 million or more in Section 13(f) securities, which are mostly US-listed stocks. The report is due within 45 days after the end of each calendar quarter, and it shows what the manager held on the last day of that quarter.

What a 13F shows

Each holding's issuer, class of security and CUSIP number
The number of shares held at quarter end, and their market value
Certain options and warrants, convertible debt and closed-end fund shares, which can also count as 13(f) securities

What it doesn't show

Short positions: a 13F covers long holdings, so a fund that is short a stock, or hedged, can look more bullish than it is.
Timing within the quarter: you see the position on the last day, not when it was bought. By the time a 13F is filed, the holdings can be up to 45 days old, and the fund may have traded since.
Mutual fund shares and most non-US holdings.

Reading one well

The interesting part is the change between two quarters: a new position, a large add, or an exit. A position worth 5% of a fund's reported holdings says more than one worth 0.1%. Options count too: a fund that bought calls rather than stock is making a different bet, and a put position is often a hedge.

How AlphaFilings uses 13Fs

We compare each tracked fund's latest 13F with its previous one and surface the moves that matter. Funds' quarterly moves feed the same 1–99 score as insider buying.

See what the tracked funds are buying →

Questions

When are 13F filings due?: Within 45 days after the end of each calendar quarter, so around mid-February, mid-May, mid-August and mid-November.
Who has to file a 13F?: Institutional investment managers with investment discretion over $100 million or more in Section 13(f) securities.
Does a 13F show short positions?: No. It reports long holdings, so it isn't a full picture of a fund's portfolio.

Updated 2026-11-02. Rules and deadlines are summarised from the SEC's own guidance; check the SEC's pages for the full requirements. This page is general education, not investment advice.