Tools · Backtest
What if you had copied them?
Put a fixed stake on every graded flag a wallet made, at the price it paid, and see the hypothetical result. This looks backward only, and it is not a prediction or a recommendation.
Hypothetical P&L
+$612
Return on staked
+76.5%
Bets
7/8 won
Edge vs price
+36.1 pts ±17.4
Cumulative hypothetical P&L, $100 per bet
Jul 06, 17:10 EDTJul 14, 13:27 EDT
Most recent bets in the test
| Market | Entry | Result | Placed |
|---|---|---|---|
| Will France win on 2026-07-14? | 62¢ | called | 101d ago |
| France vs. Spain: Team to Advance | 42¢ | called | 101d ago |
| France vs. Spain: Team to Advance | 42¢ | called | 101d ago |
| Will France win on 2026-07-14? | 60¢ | called | 101d ago |
| France vs. Spain: Team to Advance | 41¢ | called | 101d ago |
| Norway vs. England: Team to Advance | 66¢ | called | 104d ago |
| Will England win on 2026-07-11? | 51¢ | missed | 104d ago |
| United States vs. Belgium: Team to Advance | 47¢ | called | 109d ago |
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Why this overstates what you'd get
- You'd be late. Flags show up after the trade, often after the price has moved. Use "Copy delay" to price each bet 1 to 24 hours later from market history, or add an extra cost per fill.
- Picked after the fact. Wallets that look good here were chosen because they did well. Tick the out-of-sample box to test only bets made after the cutoff.
- Small samples are noisy. Look at the ± standard error. A few lucky long shots can make the P&L.
- Fees: many Polymarket markets charge no trading fee. Some charge a taker fee of rate × min(price, 1−price) per share. Set "fee rate" to model it.
- Ignores spreads, liquidity, partial fills, and sells before resolution. It counts only graded flags (placed ≥1h before close, 3¢–97¢).
Hypothetical results from public data. Not financial advice.