What Is a 13F Filing?
Understand who files Form 13F, what the holdings table contains, its timing limits, and how to compare quarters safely.
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What is a 13F filing?
Form 13F is a quarterly report under Section 13(f) of the Securities Exchange Act. It provides a standardized public view of certain reportable securities over which an institutional investment manager exercises investment discretion as of the last day of a calendar quarter. The filing appears through the SEC’s EDGAR system.
The report belongs to the reporting manager and may aggregate positions across accounts, advisers, or reporting relationships. It should not automatically be treated as one named fund’s standalone portfolio. Read the cover page, report type, list of other managers, summary page, and information table together.
Who must file Form 13F?
Under the SEC’s rule and current FAQ, an institutional investment manager that exercises investment discretion over accounts holding an aggregate fair market value of at least $100 million in Section 13(f) securities on the last trading day of any month in a calendar year enters the filing framework. The legal test concerns investment discretion over covered securities, not simply total assets under management.
The definition can include banks, insurance companies, broker-dealers, investment advisers, pension funds, and natural persons that meet the rule’s conditions. Filing obligations and edge cases should be checked against the SEC instructions or legal counsel; this page is educational, not legal advice.
13F filing deadline and reporting timeline
The critical dates are different: the report period is the quarter-end snapshot, while the filing date is when the document reaches EDGAR. A holding shown in a filing made 45 days later is not evidence that the manager bought, sold, or still held it on the filing date.
Deadlines can be affected by weekends, holidays, amendments, and specific rule mechanics. For compliance decisions, use the official SEC calendar and instructions rather than a generic date list.
13F-HR, 13F-NT, combination reports, and amendments
Holdings report
All of the reporting manager’s Section 13(f) securities are reported in that filing’s information table.
Combination report
Some holdings are listed in the manager’s filing and the rest are reported on another manager’s Form 13F.
Notice report
No holdings are listed in this filing because all are reported on another manager’s Form 13F; the cover page identifies the other manager or managers.
Amendment
13F-HR/A or 13F-NT/A changes a previously filed report. Determine whether it restates the filing or adds holdings entries, and use the latest applicable record.
How to read the 13F holdings table
| Field | What it records | Reading caution |
|---|---|---|
| Issuer / title of class | Reported name and class | Names change; class matters |
| CUSIP | Security identifier | Normalize identifier changes and corporate actions |
| Value | Quarter-end market value under the filing convention | Value changes combine price and position effects |
| Shares / principal amount | Reported quantity and type | Use quantity—not value alone—to infer position change |
| Put / Call | Option designation when applicable | Reported amount may represent underlying securities |
| Discretion / other managers | Reporting relationship | Avoid duplicate aggregation across related filers |
| Voting authority | Sole, shared, or none | Voting authority is not the same as economic exposure |
How to compare 13F filings across quarters
Match the manager and period
Confirm CIK, manager name, report calendar or quarter, filing type, accession number, and amendment chain.
Normalize securities
Map issuer names, classes, CUSIPs, corporate actions, mergers, and identifier changes without collapsing distinct securities.
Compare reported quantities first
Separate quantity changes from market-value changes. A higher reported value can occur even when shares are unchanged or reduced.
Classify changes cautiously
Label apparent new, increased, reduced, unchanged, or exited positions at quarter-end; do not invent trade dates or motives.
Apply amendments and reporting relationships
Use the latest applicable amendment and resolve holdings reported by other managers before aggregating.
Q1
1,250,000 shares
$25.48M reported value
Q2
1,300,000 shares
$28.91M reported value
Defensible statement
The quarter-end reported quantity increased by 50,000 shares. The filing alone does not reveal the exact trade date, price, motive, or current position.
What a 13F filing does not show
The public filing can arrive up to 45 days after quarter-end, so the position may already have changed.
The form covers securities on the SEC’s Section 13(f) list under the instructions, not every asset, liability, cash balance, foreign security, or derivative exposure.
Do not infer net exposure or hedging from reported long positions. Put and call rows require special care and do not reveal the full strategy.
Positions can be aggregated across accounts under the reporting manager’s discretion and may not map to one fund or client.
The SEC may grant confidential treatment in specified circumstances, delaying public visibility until denial or expiration and later amendment.
A reviewable 13F data workflow with QVeris and FMP
QVeris can help discover and call relevant FMP institutional-holder and SEC-filing capabilities, then preserve the manager identifier, report period, filing date, accession, form type, amendment status, security identifier, reported quantity, value, and retrieval time. Retain the original SEC link for verification.
A robust comparison deduplicates reporting relationships, applies amendments, separates quantity from value, and labels all inferred changes as quarter-end observations. QVeris and FMP do not guarantee filing completeness, data interpretation, or investment performance.
Form 13F FAQ
What does a 13F filing show?
It shows specified reportable securities over which a filing institutional investment manager exercised investment discretion at calendar quarter-end, using a standardized information table.
When are 13F filings due?
The SEC rule generally requires filings within 45 days after calendar quarter-end. Verify exact dates against official SEC instructions and calendars.
What is the difference between 13F-HR and 13F-NT?
A holdings report lists the manager’s reportable holdings. A notice lists none because all are reported on another manager’s Form 13F and identifies that manager.
Do 13F filings show short positions?
They do not provide a complete short book or net portfolio exposure. Certain option positions may appear, but require careful interpretation.
Can you copy a manager’s portfolio from a 13F?
A 13F is delayed, partial, aggregated, and limited to quarter-end. It does not reveal current positions, trade prices, objectives, risk limits, or the complete portfolio.
Why do 13F values change when share counts do not?
Reported value reflects quarter-end market prices. Price movement can change value even with an unchanged position quantity.
Official references
- SEC — Frequently Asked Questions About Form 13F
- SEC — Form 13F and instructions
- FMP — Financial data API documentation
Educational content only; not legal or investment advice. Check current SEC rules and instructions for compliance decisions.