Highest ROI trades on Polymarket
The biggest return-on-cost trades that hit — someone took a long-shot position and it paid. Ranked by ROI (profit ÷ cost), from every resolved position on-chain. Click any trader to explore their full history.
Top trade
Wa…ll turned $574.52 into $5.1K
7.9× ROI
| # | Trader | Market | Entry | Cost | Profit | ROI | |
|---|---|---|---|---|---|---|---|
| 1 | Wa…ll | Will MrBeast's next video get less than 20 million views on day 1? | 10.3¢ | $574.52 | +$4.5K | 7.9× | Jul 26, 2026 |
Find traders with real, repeatable skill
One huge ROI can be luck. Polyrank ranks the 2.9M-wallet field by calibration, edge, and risk — so you can follow the genuinely skilled, not the lucky.
ROI = realized profit ÷ cost basis on a single resolved position. Past performance does not predict future results. Not financial advice.