Evergreen, kept-current guides to copy-trading on Polymarket — how copying actually works, how to vet a trader before you copy them, what it really costs, and how to size what you risk. Written from the same scored on-chain data that powers the CopyGrade Score, not from vibes.
Polymarket has no native copy-trading feature. The bot is the easy part — choosing who to copy is the whole game. The full loop, in order.
The order book, the merge primitive, and the oracle — every mechanic on Polymarket is a gap between the leader's result and yours.
From CLOB and stealth merges to copy-bait and exit liquidity — every term that matters, defined in two or three sentences, each linking to its deep-dive.
You can only copy a trader whose record you can see. Polymarket publishes every wallet on-chain; Kalshi keeps records private — which is why wallet-level copy trading, and CopyGrade, are Polymarket-only.
Kalshi keeps accounts private, not on a public chain — no trader to follow, no record to vet. So anything sold as 'Kalshi copy trading' is really signal-selling or strategy automation; here's why, and where copy diligence is actually possible.
A CFTC-regulated US app is live; the main on-chain exchange — the one CopyGrade actually scores — is still geoblocked and pending approval to reopen. What US access does, and doesn't, change for anyone copying wallets.
70% of active Polymarket wallets have negative post-fee edge. A strategy is your specific claim about why you're in the other 30% — there are about six that hold up.
The NFL board is live and liquid two months before kickoff — which makes it both the best copy-trading window of the year and the one that attracts the most manufactured records. Both halves, covered.
Crypto is the vertical that never goes dormant — and by our graded data, one of the hardest places for a copied edge to survive: clean cohorts keep fractions of a percent at best, against the platform's heaviest fee drag.
October baseball is a different product from the 162-game season — shorter samples, sharper prices, heavier attention. The postseason market stack, the September vetting playbook, and why 75% of our graded MLB board is farming-flagged.
Five questions, with thresholds and base rates: only 1.1% of active wallets clear all of them. The canonical reference version of our checklist.
A green PnL flatters you; 70% of active wallets lose money after fees. Grade your own record the way you'd vet a copy target — then decide: trade, or copy?
You've vetted two wallets and both look good. Put them side by side and break the tie on the metrics that decide what you'd actually keep — or copy neither.
Bots differ on fees, latency, controls, and custody. A 1%-per-side fee alone consumes more edge than most wallets have. The criteria list, with no affiliate links.
The SERP for these queries is vendors reviewing themselves. Here's an independent framework and the verifiable facts — custody, pricing, controls, and the question every vendor skips: who picks the wallet you copy?
The leaderboard cohort scores worse than the field it was skimmed from — 59.8% farming-flagged, 0.5% copyable. What a profit rank sees, what it can't, and how to use both.
A leaderboard tells you who is up. This tells you who is worth copying — and why the count of copyable NFL wallets keeps moving even when nothing has improved.
Raw PnL shows none of what matters. Read a wallet the way a quant does — realistic edge, risk-adjusted return, maximum drawdown, and the Kelly fraction that ties them together — and only ~1.1% survive.
Most copiers check neither the wallet nor the bot. Vet the source wallet first — only ~1.1% pass — then shrink the bot's blast radius: keys, permissions, caps, kill-switch.
A zero-cost, zero-latency replay of a wallet you picked because it just won manufactures confidence. How to run the honest version in the Copy Simulator, what two numbers to read, and the five ways backtests lie.
A 50% loss needs a 100% gain to recover. Size each wallet so its worst historical stretch stays survivable — the arithmetic and the rules.
Two wallets in the same markets are one bet in two accounts. How to combine a handful of vetted edges so the basket's drawdown beats its worst member's.
Copy-bots are takers on every fill — they pay the new fees twice per round trip, on top of bot charges, slippage, and latency. The 2026 schedules and what they do to a copied edge.
The copy-trading loop's last step — monitor — is the one nobody specifies, and it's where money is lost slowly instead of quickly. The five written-down tripwires, how to watch them, and how to exit without donating gains to fees.
General information, not tax advice. Copying a 50-trade-a-month wallet can mean hundreds of taxable events a year, no 1099, and a cost basis you reconstruct yourself — a real cost of copying.