13F Filing Requirements

Both halves of that sentence do real work, and the second half is where most confusion lives. The SEC’s own guidance treats “institutional investment manager” as two overlapping categories: an entity that invests in, or buys and sells, securities for its own account — banks, insurance companies and broker-dealers are the examples the Commission gives — and any person or entity that exercises investment discretion over someone else’s account.

That second category is what sweeps in advisers. It means the label on the firm is close to irrelevant. The following all file on exactly the same terms once they cross the threshold:

• —Registered investment advisers, from single-strategy shops to national wealth managers
• —Exempt reporting advisers and advisers below the SEC registration threshold
• —Banks, bank holding companies and trust departments
• —Insurance companies and their general accounts
• —Broker-dealers exercising discretion over client assets
• —Corporate treasuries and operating companies holding US-listed equities
• —Public and corporate pension plans, endowments and foundations
• —Family offices, whether or not they rely on the family office exclusion

Registration with the SEC is not the trigger. The Commission is explicit that a manager meeting the requirements of Section 13(f) must file regardless of whether it is an SEC-registered investment adviser, and that banks, bank holding companies and broker-dealers are required to file even though they are excluded from the definition of investment adviser. An adviser that never registered, or that deregistered, still owes the report if the discretion and the dollars are there.

The clearest exclusion runs the other way and is about individuals rather than firms: a natural person exercising investment discretion over his or her own account is not an institutional investment manager. A wealthy individual trading a personal brokerage account does not file, however large the account. Interpose an entity that manages it, and the analysis changes.

Crossing $100 million also says nothing about the beneficial-ownership forms, which measure something else entirely. The SEC’s 2023 beneficial-ownership release describes the trigger as acquiring beneficial ownership of more than five percent of a covered class — a “covered class” being, with limited exception, a voting class of equity securities registered under Section 12 of the Exchange Act — and it sets the initial Schedule 13D deadline at five business days after that acquisition, against 45 days after quarter end for a 13F. A manager can easily owe one and not the other — we set the two tests side by side here.

Rule 13f-1(a) does not measure at year end. It measures the aggregate fair market value of accounts holding Section 13(f) securities on the last trading day of any month of a calendar year. A single month-end above the line is enough. A manager that touches $101 million on 31 May and spends the rest of the year at $80 million has still met the test for that year.

Two further details decide the answer more often than the headline number does. First, only Section 13(f) securities count toward the threshold — not the whole book. Second, what counts is investment discretion, not ownership, so a manager measuring the test counts client assets it directs, not its own balance sheet.

Meeting the test on any month-end starts a fixed sequence of four filings, and the sequence does not begin with the quarter in which the crossing happened.

This is why a manager that crosses in February does not file for the first quarter. The first report captures the year-end position, and the three that follow carry into the next year. The SEC puts it plainly: make all four filings even if, after meeting the threshold, you subsequently fall below it. Assets are tested once and then the calendar runs.

One relief exists inside the form rather than the threshold. A manager may omit an otherwise reportable holding if it holds fewer than 10,000 shares of the issuer — or less than $200,000 principal amount of a convertible debt security — and the aggregate fair market value of that holding is under $200,000. Both conditions must hold. It trims the long tail of an information table; it does not lower the $100 million line.

Form 13F has three parts. The cover page identifies the manager and carries its 13F file number, its CRD and SEC file numbers where they exist, the report type, and the list of other managers reporting on its behalf. The summary page gives three totals — the number of other included managers, the number of information table entries, and the aggregate value of those entries — plus the checkbox declaring that holdings have been omitted under a confidential treatment request. The information table is the holdings themselves, in eight numbered columns.

Note that the put/call flag is not its own column: it lives inside Column 5, because the rest of an option line describes the underlying security. That packing is a standing source of parsing errors for anyone reading filings in bulk.

The mechanics of each field, and what a careful reader can actually infer from them, are the subject of a separate guide — we go through the information table column by column here.

The cover page asks the manager to check exactly one report type. The choice is not about the size or style of the book; it is about a duplicative-reporting rule. Where two or more managers share discretion over the same securities and both must file, General Instruction 2 to the form says only one of them reports those securities. The other names the manager reporting on its behalf.

The 13F-NT is the report type that breaks screeners. Its information table is empty by design, which an automated pipeline happily records as a manager that sold everything. What the notice actually documents is an allocation of the reporting duty: where two or more managers share discretion over the same securities, one of them reports the holdings and the rest say so. The positions are intact, in the filing of whichever manager the cover page names. Read that list of other managers and go there.

Amendments are filed as 13F-HR/A, and the cover page forces a choice between two kinds. An amendment that is a restatement resubmits the entire filing as corrected and supersedes the original. An amendment that adds new holdings entries contains only the securities being added and supplements the original. The distinction matters when reconstructing a portfolio: treating a supplement as a restatement drops every position that was not amended, and treating a restatement as a supplement double-counts.

A manager building a position can ask the SEC to keep specific holdings out of the public filing for a while. The request is made under rule 24b-2 and is not a formality: the manager must provide enough factual support for the Commission to make an informed judgment on the merits, addressing the investment strategy at issue, why publication would reveal it, and why that revelation would be premature.

The confidential Form 13F lists only the holdings for which treatment is sought. The public filing carries a statement on its summary page that information has been omitted and filed separately. Filers may initially request three months, six months, nine months or one year.

Confidentiality is a delay, not an erasure. When a request is denied, or when treatment that was granted expires, the manager must file an amendment to the public Form 13F disclosing the omitted holdings. The instructions are specific about its form: that amendment must not be a restatement — it must be designated as adding new holdings entries, and it must carry a legend on the cover page naming the original filing date and the date treatment was denied or expired.

The practical consequence for anyone reading filings is that a portfolio can be revised months after the fact, and the revision arrives as a separate document. We trace how far that can push real disclosure here.

Every Form 13F is due within 45 days after the end of the period it covers— the calendar year for the first report, and each of the first three calendar quarters of the following year for the rest. Forty-five days after December 31 is February 14, which is why the year-end filing has a mid-February reputation.

The one wrinkle worth internalising is the business-day shift. When a deadline falls on a Saturday, Sunday or a holiday, the filing is due on the first business day thereafter. In practice that moves at least one deadline most years, and the shift is what trips up calendars built by adding 45 days in a spreadsheet.

Rather than restate the calendar here, our deadlines guide lists each quarter’s due date with the shifts already applied, alongside the filing patterns that cluster most reports into the final 48 hours.

Form 13F is filed electronically on EDGAR unless a hardship exemption has been granted. A first-time filer needs EDGAR access before it needs a completed form, and the sequence catches firms that leave it to the last fortnight.

• —Apply on Form ID, selecting the applicant type "Institutional Investment Manager (Form 13F Filer)".
• —Obtain a CIK. A pre-existing CIK used to register a regulated entity — an investment adviser, broker-dealer or transfer agent — will not serve; a separate CIK is needed to file Form 13F.
• —Collect the EDGAR access codes issued through the SEC’s filer management system.
• —Note the 13F file number the SEC assigns, which begins with the prefix 028- and appears on the EDGAR acceptance message.

The submission itself is structured data, not a document. A filer must either use the online form on the EDGAR Filing Website and build the information table according to the EDGAR XML Technical Specification, or construct the entire Form 13F to that specification. This is the reason 13F data is machine readable at all, and the reason a malformed table is rejected outright rather than quietly accepted.

The universe to report against is the SEC’s Official List of Section 13(f) Securities, published under rule 13f-1(c) and updated quarterly. Filers may rely on the current list in deciding whether a particular holding is reportable, which makes it the definitive answer to “is this security in scope?” — we explain what the list contains and how it is maintained.

One further obligation applies to banks: a manager whose deposits are insured under the Federal Deposit Insurance Act must send a copy of every Form 13F it files to the bank’s appropriate regulatory agency, with confidential access codes removed.

Section 13(f) is a reporting obligation under the Securities Exchange Act of 1934, and the missing report is itself what the Commission charges. Its September 2024 13F sweep is the plainest illustration of what that looks like in practice.

On September 17, 2024 the Commission announced charges against 11 institutional investment managers for failing to file Forms 13F they were required to file, in the SEC’s words, “because they have discretion over more than $100 million in certain securities.” Two of the entities, Nationale-Nederlanden and NEPC, were also charged with failing to file Forms 13H, required for large traders who trade a significant amount of exchange-listed securities. All 11 firms agreed to settle, and nine will pay more than $3.4 million in combined civil penalties.

The release names every firm and the penalty it agreed to — Mason Investment Advisory Services, Inc. at $525,000, TD Private Client Wealth, LLC at $475,000, Bulltick Wealth Management, LLC at $175,000, and so on down the list. Two firms were not ordered to pay any civil penalty because they self-reported the violations at issue and otherwise cooperated with the investigations, and a third escaped a penalty on its Form 13H failure for the same reason. That is the point Jason Burt, Director of the SEC’s Denver Regional Office, drew out in the announcement: “The integrity of the securities markets depends largely on firms providing accurate, timely information about their securities holdings and trading activity,” he said, and the resolutions “illustrate how seriously the Commission takes non-compliance as well as the benefits a firm may derive from self-reporting its non-compliance.”

The practical lesson is procedural rather than legal. A manager approaching the line is better served by monitoring month-end market values of its Section 13(f) securities than by waiting for a year-end review.