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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
−$285
Return on staked
-25.9%
Bets
4/11 won
Edge vs price
-14.0 pts ±14.8
Consistency check. Older half of bets: -12.0 pts (2/5). Newer half: -15.7 pts (2/6).
Cumulative hypothetical P&L, $100 per bet
Jul 14, 09:11 EDTOct 23, 13:40 EDT

Most recent bets in the test

MarketEntryResultPlaced
Hawks vs. Hornets57¢called1d ago
Bulls vs. Bucks52¢missed1d ago
Raptors vs. Wizards31¢missed1d ago
Tampa Bay Rays vs. Milwaukee Brewers60¢called1d ago
Cavaliers vs. 76ers44¢missed1d ago
Spread: Raptors (-10.5)50¢missed2d ago
Hornets vs. Nets48¢missed2d ago
76ers vs. Knicks62¢missed3d ago
Rams vs. Broncos44¢called30d ago
Los Angeles Dodgers vs. Chicago Cubs65¢missed81d ago
France vs. Spain: Team to Advance41¢called102d 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.