Form N-PORT vs. 13F: What Each SEC Filing Actually Discloses

MarketPeel has already covered how to read Form 13F in depth. But 13F covers one narrow slice of institutional money: U.S.-listed equities that hedge funds and other managers hold long. Compare form n-port vs 13f side by side and the gap is obvious — 13F never shows what mutual funds and ETFs themselves hold, a much bigger universe of bonds, derivatives, cash, and foreign securities.

N-PORT is also in the middle of a live regulatory fight. A 2024 rule would have made it public every month. That rule got delayed before it ever took effect. Now a February 2026 SEC proposal wants to lock in quarterly public disclosure permanently — even though the SEC itself would keep getting the data monthly. This piece walks through what each filing shows, using a real EDGAR filing from the Vanguard 500 Index Fund, and exactly where that fight stands right now.

Why There Are Two Different Fund Disclosure Forms

The SEC’s own FAQ on Form 13F is explicit about who files it: any institutional investment manager that exercises investment discretion over $100 million or more in “Section 13(f) securities” — a defined list of exchange-traded U.S. equities, certain options and warrants, and closed-end fund shares. It’s a filing about managers: hedge funds, banks, and pension funds, reporting what they hold on behalf of clients.

Form N-PORT is a different animal entirely. Per the SEC’s own N-PORT reference form, it’s filed by the registered investment companies themselves — mutual funds and most ETFs organized as open-end funds, plus most closed-end funds — disclosing their complete portfolio holdings: equities, bonds, derivatives, and cash, not just U.S. stocks. If 13F tells you what a manager owns in one narrow category of securities, N-PORT tells you what a fund actually holds, full stop. Readers who only know 13F are missing most of the picture of how institutional and fund money actually moves.

What Form 13F Shows — and What It Deliberately Leaves Out

To see the contrast clearly, it helps to recap what 13F actually requires. The official Form 13F template asks for exactly five data points per holding: issuer name, class of security, CUSIP, market value, and number of shares. There’s no field for fixed income, no field for derivative detail, and no field for short exposure.

The SEC’s FAQ reinforces the boundaries. Filers “should not include short positions on Form 13F,” mutual fund shares are explicitly excluded from the reportable list, and non-U.S.-listed securities aren’t reported either. Managers who cross the $100 million threshold must file within 45 days of each quarter’s end. It’s a useful dataset — but a narrow one, never designed to show a fund’s bonds, hedges, or cash position.

Form N-PORT vs. 13F: What N-PORT Discloses That 13F Never Will

A real filing makes this concrete. The Vanguard 500 Index Fund’s Form N-PORT filing, filed on EDGAR on May 28, 2026, reports total net assets of roughly $1.42 billion for the reporting share class, with common stocks making up 99.8% of the portfolio across all eleven GICS sectors. That part looks like a 13F. What doesn’t is the rest of the filing: the holdings schedule separately itemizes derivative instruments, including futures contracts and total-return swaps, and flags non-income-producing securities, a level of line-item detail Form 13F structurally cannot capture because its template has no field for it.

The 2024 Rule That Was Supposed to Make N-PORT Public Every Month

On August 28, 2024, the SEC adopted amendments to Form N-PORT by a 3-2 vote, with Chair Gensler and Commissioners Crenshaw and Lizarraga in favor and Commissioners Peirce and Uyeda opposed. The amendments would have required funds to file N-PORT monthly, within 30 days of each month-end, with each monthly report made public 60 days after month-end. That replaced the older regime, where funds filed quarterly and only the third month of each quarter was ever made public.

Commissioner Crenshaw framed the stakes plainly in her statement on the amendments: “Giving investors the ability to see more information about their holdings in registered funds is common sense to me.” She noted the change would roughly triple the amount of publicly available fund holdings information, replacing disclosure that could be up to five months stale with monthly releases lagged only 60 days.

Why the Rule Got Delayed to 2027 Before It Ever Took Effect

The 2024 amendments never actually went live. On January 20, 2025, a presidential memorandum directed federal agencies to review recently adopted rules that had not yet taken effect. Acting on that directive, the SEC delayed the compliance dates for the Form N-PORT amendments on April 16, 2025, pushing them from November 17, 2025 to November 17, 2027 for larger fund groups, and to May 18, 2028 for smaller ones — roughly a two-year extension before the rule ever applied to a single filing.

That’s a useful reminder for anyone who treats a “final” SEC rule as settled: the SEC’s own rulemaking docket shows these amendments were proposed in 2022, adopted in 2024, and had their compliance dates delayed less than eight months after adoption. A rule can clear a 3-2 vote and still never take effect on schedule.

The February 2026 Proposal: Quarterly Instead of Monthly, Permanently

The delay turned out to be a pause, not a reprieve. On February 18, 2026, the SEC proposed new amendments to Form N-PORT that would scrap the 2024 rule’s monthly public disclosure altogether. The SEC chairman said, “Reducing unnecessary reporting burdens and increasing efficiency in disclosure requirements is a top priority of the Commission.” Funds would still file monthly data to the SEC itself, with a longer 45-day deadline instead of 30, but the public would only see the third month of each fiscal quarter, 60 days after quarter-end, exactly as it worked before 2024. The SEC keeps its monthly window; the public’s reverts to four snapshots a year.

The mechanics of the filing deadline are spelled out in the Federal Register version of the proposal: the monthly Form N-PORT filing deadline with the SEC would move to 45 days after month-end, up from 30 days under the 2024 amendments. The public comment period runs 60 days from Federal Register publication, closing April 24, 2026, under file number S7-2026-05 — a live, citable channel for anyone who wants to weigh in.

Two secondary changes are worth flagging. Sidley Austin’s analysis notes the proposal narrows portfolio-level risk metric reporting to funds with debt exposure above 50% of net assets (up from 25%) and simplifies derivatives reporting, while leaving the substantive “Names Rule” 80% investment policy requirement itself untouched — only its separate reporting on Form N-PORT would be eliminated. Large fund families get a 12-month transition, smaller firms 18 months. Separately, companion Names Rule FAQs clarified that terms like “merger arbitrage” don’t trigger the 80% investment-policy requirement, and waived the usual 60-day advance notice for policy changes made solely to comply with the amended rule.

How to Actually Pull an N-PORT Filing on EDGAR

Every N-PORT filing is free and public on EDGAR, but the naming conventions trip people up. Here’s the fastest path, using the Vanguard 500 Index Fund filing above as a worked example.

What This Means for Tracking Fund and Institutional Money Today

The practical takeaway: 13F and N-PORT are complementary, not interchangeable. 13F tells you what institutional managers hold long in U.S. equities; N-PORT tells you what a fund’s complete portfolio looks like, including the bonds, derivatives, and foreign holdings 13F structurally can’t show. For a manager’s real risk exposure, not just the equity book, N-PORT is the only place to look, and it pairs well with Form SHO’s short-position disclosure for filling in what 13F leaves dark.

It’s also worth being precise about what’s public right now. Because the 2024 amendments were delayed to November 2027, today’s public N-PORT data is still governed by the pre-2024 regime: quarterly filings, with only the third month of each fiscal quarter ever made public, 60 days after quarter-end. If the February 2026 proposal is adopted largely as written, that won’t change — the public view stays locked at four snapshots a year, even as the filings the SEC itself receives keep updating monthly.