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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
−$405
Return on staked
-28.9%
Bets
8/14 won
Edge vs price
-10.3 pts ±10.8
Consistency check. Older half of bets: +16.7 pts (7/7). Newer half: -37.3 pts (1/7). The edge has faded in recent bets.
Cumulative hypothetical P&L, $100 per bet
Jul 09, 18:04 EDTAug 31, 13:21 EDT

Most recent bets in the test

MarketEntryResultPlaced
Will there be no change in Fed interest rates after the September 2026 meeting?40¢missed54d ago
Will there be no change in Fed interest rates after the September 2026 meeting?49¢missed57d ago
Will there be no change in Fed interest rates after the September 2026 meeting?57¢missed57d ago
Will there be no change in Fed interest rates after the September 2026 meeting?68¢missed64d ago
Will there be no change in Fed interest rates after the September 2026 meeting?68¢missed64d ago
Will there be no change in Fed interest rates after the July 2026 meeting?74¢called92d ago
Will the Iranian regime fall by April 30?5¢missed207d ago
Will there be no change in Fed interest rates after the April 2026 meeting?96¢called219d ago
US strikes Iran by March 31, 2026?61¢called242d ago
Khamenei out as Supreme Leader of Iran by January 31?81¢called283d ago
Will Zohran Mamdani win the 2025 NYC mayoral election?91¢called355d ago
Will Zohran Mamdani win the 2025 NYC mayoral election?89¢called360d ago
Will Zohran Mamdani win the 2025 NYC mayoral election?93¢called367d ago
Will Zohran Mamdani win the 2025 NYC mayoral election?72¢called472d 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.