Copy Trading: Following Other Wallets
Follow and auto-replicate whale wallet trades
Copy trading automatically replicates trades from wallets you choose to follow. When the followed wallet opens a position, Predite opens a proportional position in your account. When they sell in that market, your copied position is closed IN FULL — Predite does not try to mirror partial exits proportionally (we can only see the leader's fills, not their remaining position), and in a defensive copy product, leaving on the leader's first exit signal is the behavior that protects you. It's a hands-off way to piggy-back on traders whose performance you trust.
How to Set Up Copy Trading
Open Dashboard → Copy Trading → New Copy.
Configure:
- •Follow wallet. The Polymarket wallet address you want to copy. You can find addresses in the Whale Tracker, Traders page, or just paste one you've identified yourself.
- •Copy percentage. What fraction of their position size you replicate. 10% means if they buy $1000, you buy $100. Range: 1% to 100%.
- •Max size per trade ($). Hard cap on any single copied trade. Even if their trade × your copy% would be larger, you cap at this number.
- •Min size per trade ($). Skip trades below this size. Useful for filtering out tiny exploratory positions.
- •Categories. Filter to specific market types (only copy their politics trades, not their crypto).
- •Mode. Paper (simulate) or Live (execute via CLOB API).
- •Direction filter. Copy both YES and NO trades, or only one direction.
After saving, the copy is active. Every time the followed wallet places a trade matching your filters, your account places a proportional one.
How Trades Are Detected
Predite watches the Polymarket blockchain in real-time. When a trade settles on-chain from a followed wallet, our indexer:
- Detects the new transaction
- Decodes the trade (market, direction, size)
- Matches it against active Copy configs
- For each matching config, calculates your size (their size × copy%, capped at max size)
- Submits the trade via your CLOB API credentials (Live) or simulates (Paper)
The copy engine runs on a 5-minute cron, so a leader's entry is mirrored within that window — not in seconds. Size your expectations accordingly: you are following the move, not racing it. If their move is very fast and the market moves significantly in that window, your fill price may differ from theirs.
Choosing Wallets to Copy
The Whale Tracker and Traders page rank wallets by performance. When evaluating a wallet to copy:
- •Win rate. What % of their resolved positions were profitable? Look for 55%+ consistently.
- •Average position size. Big positions = high conviction trades. Tiny positions = exploratory.
- •Trade frequency. Very high frequency (50+ trades/day) may be hard to mirror cost-effectively.
- •Win/loss size ratio. Average winner $1500, average loser $400 = great. Reverse = bad.
- •Category specialization. Some wallets are amazing at politics but mediocre at crypto. Use the category filter accordingly.
- •Drawdown history. Look at their P&L curve. Long flat or down periods? They might be in one of those when you start copying.
Sizing Across Multiple Copies
If you're copying 3 wallets each at 20% copy%, that's 60% total exposure to their decisions. That might be too concentrated. A reasonable rule:
- •Sum of copy % across all wallets ≤ 100% (total exposure not exceeding your full bankroll)
- •Per-wallet copy % ≤ 30% (no single wallet can blow you up)
- •Max size per trade should be your own per-trade cap, not 1/Nth of their cap
Stopping a Copy
Click the copy in the Copy Trading page → "Pause" stops new trades but keeps open positions. "Stop" cancels the copy entirely. Already-filled positions stay in your portfolio (close them manually if desired).
Trade History and P&L
The Copy Trading page shows per-wallet stats:
- •Total trades copied
- •Average copy delay (seconds from their fill to yours)
- •Average price slippage (your fill price − their fill price)
- •Total P&L from this copy
- •Win rate on resolved trades
If your copy P&L is significantly worse than the original wallet's P&L (>30pp gap), the delay + slippage is probably eating your edge. Consider lowering copy% or stopping the copy.
Risks of Copy Trading
- •Past performance ≠ future. A wallet that ran hot for 6 months may regress to the mean. Don't assume their edge persists.
- •Slippage erodes the edge. Their fill at $0.40, your fill at $0.42 = you're starting 2pp worse on every trade.
- •They may stop trading. No new trades = no copies. Check periodically that the wallet is active.
- •Resolution surprises. They may know something about a specific market that the AI doesn't. If you're copying without your own view, you can't tell which trades are skill vs. luck.
- •They may dump on you. If they close before your sell triggers, you might exit at a worse price.