Polymarket Copy Trading: Test Whether a Wallet's Edge Survives
A profitable public wallet can still be impossible to reproduce. Before copying anything, measure the delay, price movement and size left in the next recorded order book.
Polymarket copy trading attempts to follow another public wallet's trades, but public PnL does not show whether the same price and size remain available afterward. DepthFeed is not a copy-trading bot: its read-only Wallet Intelligence workspace measures the next recorded book so researchers can test copyability before risking capital elsewhere.
Why profitable wallets can be poor copy-trading candidates
A wallet's historical PnL records the price that wallet obtained. A follower acts later—after public activity is published, detected and interpreted. In a fast market, even a small delay can move the spread or remove the size that made the original trade attractive.
Some strategies are also structurally hard to copy. Market makers hedge across outcomes, arbitrageurs depend on synchronized legs, and large wallets may receive fills across many price levels. A public address may reveal only one component of that process.
The five checks before following a Polymarket wallet
| Check | Why it matters | Useful evidence |
|---|---|---|
| Sample | One win can dominate a short history | Closed samples, trade count and period |
| Concentration | One market can dominate PnL and risk | Open positions and market count |
| Entry price | High win rate can hide small payoff per share | Trade prices and side |
| Price movement | The public price may already be stale | Next-book replay price difference |
| Available size | A follower may not fill the same quantity | Next-book fillable fraction and ladder depth |
How DepthFeed measures post-trade copyability
For an eligible public trade, DepthFeed selects the first Polymarket full-book snapshot it recorded after the activity timestamp, within a 90-second lookup window. It walks asks for a buy or bids for a sell until the public share size is filled or the displayed ladder is exhausted.
The result includes the replay price, signed price difference, fillable fraction and observation delay. At least 95% displayed within one cent is labeled Depth remained; enough size at a larger price difference is Price moved; less than 95% is Size unavailable.
What this analysis does not simulate
- The private time when the original order was submitted
- Network, application or human reaction latency for a follower
- Queue position among orders at the same price
- Hidden liquidity, cancellations between observations or exchange fees
- Market impact created when many followers submit similar orders
- Hedges or trades executed through another wallet or venue
A safer research workflow
Treat leaderboard rank as discovery, public wallet analytics as context and execution replay as a feasibility check. Observe the same wallet across multiple trades and market conditions rather than extrapolating from one profitable position.
Wallet Intelligence remains read-only by design. It does not recommend a wallet, connect an account or submit a trade. If you use separate execution software, its security, permissions, fees and risks require their own evaluation.
Key takeaways
- 01Public wallet PnL measures the leader's result, not the price available to a later follower.
- 02Price movement and displayed size are central to evaluating whether a trade was reproducible.
- 03Next-book replay provides evidence but cannot model private latency, queues, fees or follower impact.
- 04DepthFeed analyzes copyability and never copies or places trades.
Test whether recent public wallet trades still had comparable displayed price and size in the next recorded book. Free Explorer tier, no card.
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