Polymarket copy trading: what the graded data shows

The selection problem is the whole problem

Every copy-trading pitch begins with a leaderboard, and most leaderboards rank by profit. Our statistics pagedocuments what that metric hides: of the 10 largest all-time P&L wallets on Polymarket, 4 clear OVERROUND’s public evidence floor at all, and among those the median skill-adjusted rank sits outside the top 1,000 (as of 2026-07-15). Ranking by profit and ranking by demonstrated accuracy answer different questions, and only one of them describes what a copier inherits.

Win rates mislead in a specific, measurable way

Across 640,363 graded wallets, the median wallet with 20 to 99 resolved events wins 50.0% of them while its entry prices implied 53.8%, and only 6% of such records are statistically distinguishable from luck (full distribution here, as of 2026-07-22). The folk criteria that circulate in copy-trading guides, a 60% win rate or a green month, sit comfortably inside what chance produces. Academic work reached the same conclusion from account-level data: the 2026 SSRN study “Who Wins and Who Loses in Prediction Markets” found the median participant loses modestly while a small minority drives accuracy.

What a record has to survive before it means anything

• Price-relative grading. Wins count against the odds actually paid; favorite-buying stops looking like skill.
• Event independence. Correlated positions on one question count once; a hot streak on a single election stops looking like a track record.
• Evidence depth. The share of records that survive a luck test climbs from 6% under 100 events to 45% above 1,000; shallow records are unratable, however green.
• A graded history of the recommender. Whoever surfaces wallets to you should publish what their surfacing returned, losses included. That is the standard this site holds itself to.

The parts no leaderboard shows

Two structural gaps sit between a copied wallet’s record and a copier’s result. Entry lag: the price a copier gets is the price after the wallet’s own move, so part of any edge is spent before the mirror fills. And style risk: some profitable records are market-making or spread-capture patterns that produce constant small fills a copier cannot replicate at their size. Both are reasons the graded, price-relative record of the wallet matters more than its dollar total, and why this site’s alerts carry the entry price and the wallet’s graded context rather than an instruction.