A Yale study of 1.72 million Polymarket accounts found only about 3% of traders show real skill — and that 3% took home 27% of all the profits. Enter any Polymarket username below and get your report card: lifetime profit, win rate, biggest win, biggest loss, and one honest grade. Built entirely from Polymarket's own public data — no wallet connection, no sign-up.
No black box. Your grade is set by two things from your public record: your win rate on closed trades and your lifetime profit (the same profit figure Polymarket publishes on its leaderboard). You need at least 5 closed trades to earn a grade.
| Grade | What it takes |
|---|---|
| S | Win rate 70%+ and profit over $10,000 — or profit over $1M while keeping 15¢+ per $1 traded |
| A | Win rate 60%+ and profit over $1,000 — or profit over $25,000 while keeping 10¢+ per $1 traded |
| B | Win rate 55%+ and in profit — or win rate 50%+ and profit over $10,000 |
| C | In profit, but below the B bar |
| D | Not in profit yet, but winning at least 45% of closed trades |
| F | Below that. The 97% has company — and every legend started somewhere |
The second path in S and A matters: some of the best traders win less than half their trades but win big when they're right. A grading system that only counted wins would flunk them, so profit-per-dollar-traded counts too.
Researchers from Yale studied 1.72 million Polymarket accounts and tested which traders beat the market by more than luck can explain. Roughly 3% passed — and that small group captured about 27% of all profits on the platform. Everyone else, statistically, is closer to the coin-flippers. Your report card won't run Yale's full statistical test, but it grades the same raw ingredients: are you winning, and are you actually up money?
Do I need to connect my wallet or log in?
No. Everything on the card is public information Polymarket already publishes — your profile, the leaderboard, and your closed trades. We never ask for a wallet connection, a signature, or a password.
Can I look up someone else?
Yes — any public username works. Grade a friend, a rival, or one of the whales from Whale Watch.
It says my username can't be found.
Some usernames don't appear in Polymarket's public search. Paste your full profile link (polymarket.com/@yourname) or your wallet address instead — that always works.
Why is my win rate based on a sample?
If you have more than 1,000 closed trades, the card grades your 1,000 most recent ones and says so on the card. Almost nobody hits that cap.
Is this financial advice?
No. It's a snapshot of a public track record, for education and bragging rights.
Every trader on the leaderboard started with zero closed trades. If you're new, start with our complete beginner guide, or open Polymarket → and make your first trade a small one.
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