WhaleGrader Log inSign up
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
+$295
Return on staked
+36.9%
Bets
7/8 won
Edge vs price
+17.8 pts ±15.3
Cumulative hypothetical P&L, $100 per bet
Mar 29, 15:08 EDTJun 08, 22:01 EDT

Most recent bets in the test

MarketEntryResultPlaced
Will the New York Knicks win the 2026 NBA Finals?82¢called137d ago
Roland Garros WTA: Aryna Sabalenka vs Diana Shnaider89¢missed143d ago
Spurs vs. Thunder61¢called151d ago
Thunder vs. Spurs58¢called152d ago
Thunder vs. Spurs47¢called154d ago
Spurs vs. Thunder69¢called156d ago
Will Manchester City FC win on 2026-05-16?58¢called161d ago
Miami Open: Jiri Lehecka vs Jannik Sinner93¢called208d ago

Wallet page · Set an alert for this wallet

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.