How to choose a Polymarket copy-trading bot
A Polymarket copy-trading bot does one job — mirror a target wallet's trades from your account — and the products differ on the four things that decide whether a thin edge survives execution: fees, latency, controls, and custody. CopyGrade doesn't run a bot, doesn't take referral fees from any of them, and the "copy" button on our verdict screens is deliberately inert — so this guide is the criteria list we'd want as users, not a ranking with an affiliate link under it.
One framing number before the criteria: in our June 2026 snapshot, only 16% of active Polymarket wallets had a realistic post-fee edge above 1%, and the median was slightly negative. Bot economics are not a footnote — for most wallet choices they're the difference between a small edge and none.
What does a copy-trading bot fee actually cost you?
Bot fees are typically charged per transaction, on both entry and exit. PolyGun — which acquired the PolymarketAnalytics leaderboard site in March 2026 — charges 1% on each buy and each sell, so a full position cycle costs roughly 2% of traded size. Against the edge distribution above, that single number disqualifies most wallets: a 2% round-trip cost exceeds the realistic edge of about five in six active wallets before slippage is counted.
Here's an illustrative single-cycle example on $1,000 copied into a wallet whose headline gain on the position was 10%:
| Stage | You keep |
|---|---|
| The leader's headline gain | $100 |
| After slippage + latency (mid-range ~35% haircut) | $65 |
| After 1%-per-side bot fees (~$21 on this cycle) | $44 |
The haircut range comes from headline return vs. what you'd make; the per-wallet version of this arithmetic is what the Copy Simulator computes from a wallet's actual fills.
The criteria that matter
Fees. Per-side percentage, any subscription on top, and whether fees apply to both legs. Compute the round-trip cost against the wallet's realistic edge — not the headline — before anything else. A cheap bot copying a bad wallet still loses; an expensive bot copying a good wallet may keep nothing for you.
Latency. How the bot detects the leader's trades (polling an API on an interval vs. streaming) and how fast it fires. Edge decays with delay — a wallet whose profits depend on being first is uncopyable at any latency, and a slow bot widens the gap on every wallet. Vendors rarely publish real latency distributions; treat unverifiable speed claims as marketing.
Sizing and exposure controls. Proportional scaling to your bankroll, per-trade caps, per-market caps, and category filters (copy the wallet's sports trades but not its politics punts — wallets are rarely sharp everywhere). A bot without hard caps is an unattended money pipe.
Exit behaviour and blind spots. What does the bot do when the leader exits invisibly? Sharp traders exit by merging YES+NO back to USDC — no visible sale — and some build positions in slices sized to duck copy-bot alert thresholds. Ask specifically: does the bot track position deltas, or only visible trades? A bot that only mirrors sells will hold bags its leader has already quietly dropped.
Custody and permissions. Does the bot hold your funds, or trade via delegated permissions from your own wallet? What's the kill switch, and what happens to open positions when you hit it? This is the difference between a tool and a counterparty risk.
The market is young and moving. PolyGun, Stand (which launched Polymarket copy trading in February 2026), and PolyCopy are the names you'll meet first; features, fees, and even ownership change fast — PolymarketAnalytics' acquisition is the proof — so verify current terms on the vendor's own page before funding anything. We deliberately don't maintain a feature-by-feature comparison table that would be stale in a month.
The order of operations
A bot amplifies whatever wallet you point it at — including the bad ones, including the farmed ones built specifically to attract bots. So the sequence is fixed: vet the wallet first, simulate the copy under your capital and latency second, choose the bot third, size it fourth. A bot decision made first is a wallet decision made by default.
CopyGrade is independent and analysis-only — it never executes trades, holds funds, or takes compensation from any execution product. Not financial advice.