Lesson 6 of 6 · 5 min · pass for +50 XP
Following the whales with 13F, and knowing its limits
Whale data is useful, as long as you know what it tells you and what it doesn't.
1What is a 13F?
Funds that manage $100 million or more in US stocks must report their holdings to the US Securities and Exchange Commission (SEC) every quarter. This site summarizes those reports: who holds what, and who added or sold.
2Key limitations
It's late: funds can file up to 45 days after the quarter ends. By the time we see it, the whale may already have sold.
It's incomplete: you only see long positions in US stocks. You don't see short positions, cash, or other assets.
Different goals: whales often hold for years and run huge portfolios. Their timing may not fit your money or your time frame.
3How to use it well
Use it as a starting point for ideas, then do your own homework: what the business does, how its profits look, how today's price compares with what the whale paid, and always set your own stop-loss.
🎯 Quiz 2 of 3 right: +50 XP · all correct: +20
For educational purposes only — not a recommendation to buy or sell any security. Investing involves risk.