The Form 13F Cover Pages dataset provides structured data extracted from the cover pages of all Form 13F filings published on EDGAR since 2013. Each record represents the cover page of one 13F filing — a 13F-HR (holdings report), 13F-NT (notice), or an amendment (13F-HR/A, 13F-NT/A) — and captures the filing manager's identity, report type, reporting period, aggregate portfolio value, total holdings count, other-manager relationships, and filing metadata. The dataset covers the entire population of institutional investment managers required to report their Section 13(f) securities holdings quarterly to the SEC, distributed as .jsonl.gz files for efficient bulk access.
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Each record is a normalized extraction of the cover page — the first structured component of a Form 13F filing. Form 13F is the quarterly report filed by institutional investment managers exercising investment discretion over $100 million or more in Section 13(f) securities. The cover page identifies the filer, classifies the report, and summarizes the portfolio at an aggregate level. This dataset extracts those fields into machine-readable JSONL records, separate from the holdings table (information table) that lists individual security positions.
The dataset is organized into monthly .jsonl.gz containers (e.g., 2025-02.jsonl.gz), with one JSON object per line representing a single 13F cover page filing. Each record is a flat JSON object — not nested documents in folders — containing all cover page fields directly.
The dataset includes all four form types: 13F-HR (the complete holdings report), 13F-NT (a notice filed when another manager reports the filer's holdings), 13F-HR/A (amendment to a holdings report), and 13F-NT/A (amendment to a notice). Coverage begins in May 2013 and extends to the present with continuous updates as new filings appear on EDGAR.
Each record is a flat JSON object with the following fields:
a4db1471f83b71bd8af46262d2fec645)0002031775-25-000001)2031775)028-25431)801-114342), if available2025-02-28T16:06:00-05:00)13F-HR, 13F-NT, 13F-HR/A, or 13F-NT/A2024-12-31): March 31, June 30, September 30, or December 3113F HOLDINGS REPORT (13F-HR) — a complete quarterly report listing all Section 13(f) securities positions in the accompanying information table.13F NOTICE (13F-NT) — a notice filed by a manager whose holdings are reported on another manager's 13F-HR (typically a subsidiary whose parent files a consolidated report).13F COMBINATION REPORT — a report that includes some holdings directly and references other managers for the remainder.amendmentNo (sequence number) and amendmentType (RESTATEMENT or NEW HOLDINGS) when isAmendment is true; empty object otherwiseBridgePort Financial Solutions, LLC)street, city, stateOrCountry (two-letter U.S. state code or SEC country code, e.g., X0 for UK, 2M for Germany), and zipCode220894407 represents approximately $220.9 billion). This field summarizes the manager's reported equity portfolio size in a single number.161)These four fields appear on holdings reports (13F-HR) and combination reports. They are empty strings on notice filings (13F-NT), because notice filers do not include their own holdings table.
sequenceNumber, name, cik, crdNumber, secFileNumber, and form13FFileNumber.name, title, phone, signature (text), city, stateOrCountry, and signatureDate of the authorized signatoryIncluded: All structured cover-page fields from every Form 13F filing on EDGAR since May 2013 — 13F-HR, 13F-NT, and their amendments. Manager identity, report classification, period metadata, portfolio summary figures, and other-manager relationships are normalized into flat JSONL records.
Excluded: The holdings table (information table) — the line-by-line list of CUSIP-level positions with issuer name, title of class, market value, share quantity, investment discretion type, and voting authority — is not included. A separate holdings dataset is needed for position-level analysis. Filing exhibits are also excluded.
Value in thousands: Total value on Form 13F is denominated in thousands of dollars. Users must multiply by 1,000 to arrive at actual dollar amounts.
Notice filings carry no portfolio data: A 13F-NT record contains manager identification and report classification but no total value or holdings count, because the actual positions are reported on another manager's 13F-HR.
Amendments restate the cover page: A 13F-HR/A may restate total value and holdings count. The dataset includes both original and amended filings; users building time-series panels should deduplicate or preference the latest amendment for each manager-period.
Confidential treatment omissions: When a manager requests confidential treatment for certain positions, the publicly filed holdings table omits those positions, and the cover-page totals may reflect only the non-confidential portion. The magnitude of confidential omissions is not disclosed on the cover page. Confidential positions are typically filed in a delayed amendment after the confidential treatment period expires.
Combination reports: A small number of filings use the combination report type, where the manager directly reports some positions and references other managers for the rest. The cover-page totals on a combination report reflect only the directly reported portion.
Form 13F is filed by institutional investment managers exercising investment discretion over $100 million or more in Section 13(f) securities. Section 13(f) of the Securities Exchange Act of 1934 defines "institutional investment manager" broadly: any entity that exercises the power to determine which securities to buy or sell on behalf of any account. The filing population includes:
The decisive qualifier is investment discretion over Section 13(f) securities specifically, not total assets under management.
The $100 million threshold applies to a defined universe published quarterly by the SEC in its Official List of Section 13(f) Securities. The list includes exchange-listed stocks (NYSE, Nasdaq), certain equity options and warrants, shares of closed-end investment companies, and selected convertible debt securities. It excludes corporate bonds, Treasuries, open-end mutual fund shares, limited partnership interests, private fund interests, and foreign securities not listed on a U.S. exchange.
The filing obligation triggers when a manager's Section 13(f) holdings meet or exceed $100 million at the end of any calendar month. Once triggered, the manager must file for the remainder of that calendar year plus the full following year, even if holdings subsequently drop below the threshold.
Filings are due within 45 days after each calendar quarter-end:
| Quarter End | Filing Deadline |
|---|---|
| March 31 | May 15 |
| June 30 | August 14 |
| September 30 | November 14 |
| December 31 | February 14 |
Approximately 3,000 institutional investment managers file Form 13F each quarter, producing roughly 12,000 to 15,000 filings per year including amendments. The filer population has grown steadily as the number of registered investment advisers has increased and the $100 million threshold — unchanged since 1978 — captures an expanding share of managers.
The closest companion is the Form 13F holdings table dataset, containing the line-by-line security positions from each 13F-HR filing:
Use cover pages to identify and filter the manager universe, track portfolio-level size, distinguish report types, and detect amendments. Use the holdings table for position-level analysis.
Form ADV is the registration and disclosure document for registered investment advisers. Many RIAs file both ADV and 13F, but the forms serve different purposes: 13F is a periodic holdings disclosure showing what securities the manager holds at quarter-end; ADV is a registration document showing who the manager is, its ownership structure, client base, fee schedules, and total AUM across all asset classes. ADV AUM figures frequently differ from the Section 13(f) total on the 13F cover page because ADV covers all asset classes.
Schedules 13D and 13G are triggered when an investor acquires beneficial ownership exceeding 5% of a class of registered equity securities. They are event-driven and issuer-specific, whereas 13F is a periodic, portfolio-wide report triggered by the manager's aggregate holdings crossing $100 million. The 13F cover pages dataset contains no issuer-level detail.
Form N-PORT is the monthly portfolio report filed by registered investment companies (mutual funds, ETFs). It covers the fund's complete portfolio across all asset classes with richer per-position detail (risk metrics, liquidity classification, delta), while 13F covers only Section 13(f) securities at the manager level with quarterly frequency. Some entities file both: a mutual fund complex files N-PORT for each fund and 13F for the adviser entity.
Form 4 reports transactions by corporate insiders (officers, directors, 10% owners). While 13F captures institutional managers' holdings snapshots quarterly, Form 4 captures the flow of insider buying and selling on a transaction-by-transaction basis. The legal frameworks and triggering events are entirely different.
Quantitative researchers at hedge funds, asset managers, and proprietary trading firms use 13F cover page data to build a universe of institutional managers for factor-based strategies. Total portfolio value, total holdings count, and period of report serve as the inputs for filtering by portfolio size, ranking managers by AUM changes, and aligning periods for panel construction. Cover page data is the first-pass filter before joining with holdings-level data: researchers select managers above a minimum size, exclude notice filers, flag amendments, and construct a clean quarterly panel.
Sell-side analysts and buy-side investors monitor cover pages to track which managers are growing or shrinking their reported equity portfolios. A jump in total value exceeding market returns signals inflows or aggressive positioning; a decline suggests redemptions or de-risking. The filing manager CIK then serves as the lookup key for position-level analysis in the holdings table.
Compliance teams use the dataset to verify timely filing in the correct form type. SEC file number, CRD number, and filing date fields enable reconciliation against internal records. Regulators use the data to monitor the filing population, detect late filers, and flag inconsistencies between cover page metadata and registration records.
Capital introduction professionals use total portfolio value as a proxy for discretionary equity AUM, enabling segmentation by size tier and identification of high-growth managers. Filing manager name and address support contact identification and geographic targeting.
Data vendors ingest 13F cover pages as the first parsing target for institutional ownership products: manager identity linkage, filing timestamp, and report classification route the corresponding holdings table into downstream processing.
Finance academics use 13F cover page data to construct sample universes for studies of institutional investor behavior, portfolio concentration, herding, and market impact. Total value and holdings count serve as size proxies and control variables.
Journalists use cover page data to identify the largest money managers, track portfolio growth, and detect unusual filing patterns. Governance researchers use it to identify institutional holders relevant to proxy contests and shareholder campaigns.
Build a time-series panel of total portfolio value by manager CIK and period of report to measure quarter-over-quarter changes in reported equity AUM. Decompose changes into market-driven appreciation and net capital flows by comparing each manager's total value growth against a benchmark. Identify managers experiencing sustained inflows or outflows, and flag large single-quarter swings that may signal fund launches, liquidations, or strategic repositioning.
Construct a quarterly panel of all institutional managers that filed a 13F-HR with non-zero portfolio value. Use CIK as the entity key, period of report for time alignment, and report type to exclude 13F-NT filers. Filter by minimum total value and use amendment flags to deduplicate, keeping only the latest filing per manager per quarter. This panel serves as the foundation for any study requiring a defined population of institutional equity managers.
Compare filing manager CIKs across consecutive quarters to identify first-time filers (new entrants) and managers that stop filing (exits). New entrants may be newly launched funds or existing managers crossing the $100 million threshold; exits may signal closures, mergers, or contraction below the threshold. Cross-reference with Form ADV to determine whether new filers are newly registered advisers or existing firms growing into the 13F requirement.
Calculate the lag between quarter-end and filing date for each submission to identify managers consistently filing near the 45-day deadline, those filing late, and those amending prior filings. Frequent amendments may signal data quality issues in position-tracking systems. Compliance teams can benchmark their own filing cadence against peers and monitor sub-advised managers for timely submission.
Use other-manager fields and report type (HR vs. NT) to reconstruct the reporting tree of affiliated managers. When a subsidiary files 13F-NT referencing a parent's 13F-HR, the cover page reveals the consolidation structure. Mapping these relationships de-duplicates institutional ownership data and exposes the organizational structure of large investment management complexes.
Use total portfolio value to segment managers into size tiers and combine with filing manager address to map geographic distribution by state or metro area. This supports market research for financial service providers and academic research on the structure of the institutional investment management industry.
Cross-reference CIK, CRD number, and SEC file number from cover pages with EDGAR filer records, FINRA BrokerCheck, and IARD data to validate manager identity and detect discrepancies. Mismatched identifiers or address changes between quarters may indicate restructurings or data entry errors. Data vendors and compliance teams use this reconciliation to maintain accurate manager master data.
Download the complete dataset archive containing all Form 13F cover page records from 2013 to the present:
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https://api.sec-api.io/datasets/form-13f-cover-pages.zip
The full archive is approximately 57 MB compressed and contains structured JSONL records covering over a decade of quarterly 13F filings.
The dataset is organized into container files in .jsonl.gz (gzip-compressed JSON Lines) format. Download individual containers using the pattern:
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https://api.sec-api.io/datasets/form-13f-cover-pages/{container-file-name}.jsonl.gz
Each container file holds cover page records for a specific time period. Each line in the decompressed JSONL file is a standalone JSON object representing one 13F cover page record.
Retrieve metadata about all available containers from the dataset index API:
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https://api.sec-api.io/datasets/form-13f-cover-pages
The index API returns a JSON object with dataset-level metadata and a list of all available container files with their download URLs, file sizes, record counts, and last-updated timestamps. Use this endpoint to identify which containers have been updated since your last download for incremental synchronization.
All API endpoints require authentication. Include your API key as a query parameter or authorization header with each request.
The dataset is updated regularly as new 13F filings are published on EDGAR. New cover page records are typically available within a short period after the source filing appears on EDGAR.
This dataset contains one record per filing with cover-page-level data: manager identity, report type, total portfolio value, total holdings count, and filing metadata. A 13F holdings dataset contains many records per filing, each representing an individual CUSIP-level security position. The two datasets are complementary — use cover pages for manager-level filtering and portfolio summaries, and holdings tables for position-level analysis.
Records from 13F-NT (notice) filings show zero or no portfolio figures because notice filers do not include a holdings table. Their actual positions are reported on another manager's 13F-HR, typically a parent entity filing a consolidated report.
Both original and amended filings appear in the dataset. For time-series panels, deduplicate by keeping the latest filing (by filing date) for each manager-CIK and period-of-report combination. The amendment restates the full cover page, so the latest amendment supersedes the original.
Yes, with caveats. All values are reported in thousands of dollars and represent Section 13(f) securities only — primarily U.S. exchange-listed equities. However, managers with confidential treatment requests may understate their publicly reported totals, and the scope is limited to 13(f) securities, which excludes fixed income, private funds, and most non-U.S. securities.
The CRD number is assigned by FINRA to broker-dealers and investment advisers. Bank trust departments, pension funds, and certain other institutional managers that are not registered with FINRA may not have a CRD number, resulting in a blank field on the 13F cover page.
The dataset covers all Form 13F filings from May 2013 to the present. With approximately 3,000 managers filing quarterly plus amendments, the dataset contains over 12,000 records per year and grows by roughly 3,000 to 4,000 records each quarter.
The other-managers section of the cover page identifies affiliated managers whose holdings are included in or excluded from the filing. It captures parent-subsidiary reporting relationships, co-filing arrangements, and delegated reporting structures common among large asset management complexes.