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Methodology: how ProbPocket verifies Polymarket PnL
Data as of · source: daily Polymarket leaderboard archive 2026-03-19 → 2026-11-01 (203 snapshots), checked against Polymarket's public APIs · methodology
What we measure
Polymarket's daily leaderboard lists the wallets that made the most on a given day. It never lists the days a wallet lost. If you add up the days a wallet appears, you get a number that can only flatter it. ProbPocket keeps a copy of the board every day and puts that sum next to the wallet's verified lifetime PnL.
- Board-day sum: the sum of the daily PnL the overall board credited to a wallet on the days it appeared in our archive.
- Verified lifetime PnL: Polymarket's own all-time profit figure for the wallet (taker fees already deducted).
- Verdict: Holds up if lifetime PnL ≥ board-day sum; Overstated if lifetime is positive but below it; Net negative if lifetime is below zero. As of 2026-11-01: 421 hold up, 89 overstated, 114 net negative.
- Execution style and rebates: maker/taker fill mix from recent fills, and maker/taker rebate events from the public activity feed.
- Fees: taker fees reverse-solved from the activity feed's cash residual and accumulated daily into an archive (979 of 1044 wallets so far; earlier fees are unknown, not zero).
- Win rate: share of settled positions that closed in profit, sampled from up to 400 closed positions per wallet.
Data sources
- Daily leaderboards:
data-api.polymarket.com/v1/leaderboard(day / week / month / all, nine categories, top 50). - Lifetime PnL:
data-api.polymarket.com/v2/leaderboardwithtimePeriod=allper wallet. - Activity (fees, rebates, 30-day composition):
data-api.polymarket.com/activity. - Win rate and volume: Polymarket closed-positions and leaderboard endpoints.
Update schedule
Daily refresh; each page shows its data date. Weekly reports are written on the first refresh of each ISO week and then frozen, so their numbers can be cited.
Limits
- The archive starts on 2026-03-19. Board days before that are not counted, and some days are missing (203 snapshots in the window).
- Lifetime PnL covers the wallet's whole history, which can begin before the archive.
- Official PnL already has taker fees deducted; the fees a wallet paid are listed separately for reference.
- Category pages show lifetime PnL across all markets, not per category; Polymarket does not publish per-category lifetime figures beyond its own top-50 boards.
- Wallet names are pseudonymous Polymarket usernames. A wallet is not a person, and one person can run many wallets.
- A dash (—) means unknown or not measured, never zero.
Also see the board-page method note and the step-by-step guide.
FAQ
- What does "verified PnL" mean on ProbPocket?
- It is the wallet's lifetime profit and loss as reported by Polymarket's own public profit endpoint (data-api v2 leaderboard, timePeriod=all, per wallet). We do not compute it from trades ourselves; we compare it with what the daily leaderboard shows. As of 2026-11-01, 624 wallets have a verdict.
- How often is the data updated?
- Once a day. A new daily leaderboard snapshot is added and every board, wallet page and category page is regenerated. A weekly report is frozen once per ISO week. Every page prints the date of the data it shows.
- Are fees included?
- Yes. Polymarket's official PnL already has taker fees deducted: on fee-heavy wallets it matches every cash in and out plus open positions (checked 2026-10-30). Wallet pages list the fees paid separately for reference, as a lower bound.
- Is this financial advice or a copy-trading signal?
- No. ProbPocket is read-only research about public wallet records. Past results, and especially leaderboard results, say little about future returns.
More from ProbPocket:
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