Interactive tools · SEC 13F

Tools & Calculators

Name: SEC 13F Tools Companion Extract
Creator: PlainFundData
License: https://creativecommons.org/publicdomain/zero/1.0/

Free, no-sign-up tools that let you explore institutional ownership directly. Every result is built from the same SEC Form 13F data that powers the rest of the site.

Compiled by PlainFundData, Institutional Ownership Editorial Process

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Tool available: No login
Always free

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. These tools query the 2025-12-31 extract of those filings directly - see our methodology for full sourcing and limitations.

Choose a comparison question

The comparison tool starts with the current SEC 13F extract: 360 filers and 7,703 securities. Select two records to compare reported value, holder breadth, and ownership concentration side by side.

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live comparison tool: 360
filers available to inspect: 7,703
securities in the extract

Results reflect reported positions from Q4 2025; they are a research aid, not an investment recommendation.

Fund & Stock Comparison Put two securities side by side and compare their institutional ownership — holder count, reported value and how concentrated that ownership is. Open tool

Download the filer landscape CSV used by these tools: 13f-filer-landscape.csv.