SEC Form 13F · institutional ownership
Who owns America's biggest stocks?
A free, searchable record of what 360 institutional managers report holding to the SEC, every position, holder, and quarter-over-quarter move, straight from Form 13F filings.
According to the U.S. Securities and Exchange Commission, institutional investment managers with at least $100 million in qualifying assets must report their U.S.-listed equity holdings on Form 13F-HR within 45 days of each quarter-end. PlainFundData compiles more than 120,000 reported positions from 360+ of these managers, drawn from public filings dating to March 2024 - see our methodology for full sourcing and limitations.
The 13F picture · Q4 2025
360 institutional managers file Form 13F here, and the 65 already reported for Q4 2025 hold 69.7B of US equity between them. MICROSOFT CORP is the single most widely held name, in 44 portfolios.
- 360
- institutions filing Form 13F
- 69.7B
- equity value reported for Q4 2025
- 216
- stocks held by 10+ institutions
- 44
- hold MICROSOFT CORP
Form 13F captures long US-listed equity positions only, filed within 45 days of each quarter-end.
Tracked institutional value over time
Total reported 13F equity value across all institutions we track, by quarter, the broad arc of institutional positioning over the last 8 quarters.
Largest Institutional Funds
View all →| # | Fund | Portfolio Value | Holdings |
|---|---|---|---|
| 1 | Pacer Advisors, Inc. | 39.1B | 3,827 |
| 2 | GROUPAMA ASSET MANAGMENT | 6.8B | 432 |
| 3 | Banque Transatlantique SA | 4.1B | 259 |
| 4 | MARINER INVESTMENT GROUP LLC | 1.7B | 101 |
| 5 | MidFirst Bank | 1.3B | 789 |
| 6 | Anchor Investment Management, LLC | 1.2B | 1,046 |
Most Widely Held Stocks
View all →New Positions This Quarter
More →Explore Institutional Ownership
Investment Research Guides
Plain-language guides to understanding institutional ownership data and SEC 13F filings.
How to read 13F data
13F filings show what institutions held, not what they think next.
- Compare a stock’s holder count and value quarter-over-quarter to spot accumulation or exits. Browse stocks
- Check a manager’s top positions and concentration before reading any single trade as a signal. Browse funds
- Treat the latest quarter as a 45-day-lagged snapshot of long US-equity positions only. 13F limitations
- Cite the mixed-vintage corpus snapshot when you need manager counts and reported value with filing dates attached. 13F statistics
Informational only, not investment advice. Positions may have changed materially since the filing date.
Guides & Analysis
Editorial research and plain-language explainers from our team. Every guide is written to help you read the underlying public data correctly.
Research
Original analysis from our editorial desk, every statistic rendered live from our own 13F database. See all research →
Top 13F Filers by Reported Portfolio Value
Which institutional managers carry the largest 13F books, how many securities they hold, and how concentrated their reported portfolios are.
ResearchTop Securities by Aggregate Institutional Value
The stocks holding the most institutional capital in the latest quarter, ranked by total reported 13F value across all tracked filers.
ResearchTop Securities by Institutional Holder Count
Which securities are held by the largest number of distinct institutional 13F filers, ranked live from the current database.
About this data
How PlainFundData works, and why you can trust these numbers
What this site is
PlainFundData is a plain-language reference for U.S. institutional ownership. We ingest SEC EDGAR Form 13F-HR filings into a searchable database of 360+ funds and 7,700+ securities so every holder count, reported value, and quarter-over-quarter move traces back to the manager's own filing.
Editorial process
- Source. Download Form 13F-HR and amendment filings directly from SEC EDGAR for each reporting quarter.
- Verify. Parse share counts and market values exactly as filed; map CUSIPs via the SEC's official 13F securities list without inventing positions.
- Publish. Compile per-fund and per-security pages with concentration, movers, and vintage stamps, always linking readers back to the EDGAR record.
Editorial independence & corrections
PlainFundData is independent and accepts no payment for coverage, placement, or rankings. Found a figure that looks wrong? Use the contact page with the URL and value; we compare it to the EDGAR filing and correct the pipeline when the error is ours. See our methodology for source attribution and refresh cadence.
Download the filer-level landscape CSV used across this site: 13f-filer-landscape.csv (manager reported value and latest filing quarter). Full aggregates live on statistics.