Published 2026-02-23 · ARK Tracker
SEC Form 13F is a quarterly report filed by institutional investment managers with over $100 million in qualifying assets. It is the ultimate tool for "tracking the smart money." But it has major flaws you need to understand.
Created by Congress in 1975 to increase public confidence in U.S. financial markets, the SEC 13F filing mandates that large institutions publicly disclose their U.S. equity investments. This includes mutual funds, hedge funds, pension funds, and insurance companies.
This is how the public learns exactly what Warren Buffett , Michael Burry , and other titan investors are buying and selling.
To use 13F data successfully, you must understand what is—and what isn't—included in the filing.
In this post
- What is a 13F Filing?
- The Rules (And The Gaps)
- How to Actually Use 13F Data