Copy-trading agents replicate the positions of proven-profitable traders automatically. On Polymarket, this means tracking wallet addresses on-chain and mirroring their trades. On Kalshi, it means following top leaderboard performers. The strategy requires minimal market analysis — you outsource the hard work to traders with demonstrated skill.

This guide ranks the best copy-trading bots and agents across prediction markets in 2026.

For platform-specific reviews, see Best Copy-Trading Bot for Polymarket and Best Copy-Trading Bot for Kalshi.

How Copy-Trading Works

On Polymarket (On-Chain Tracking)

Polymarket runs on Polygon, making every transaction publicly visible:

  1. Wallet discovery — Identify profitable wallets through on-chain analytics, Dune dashboards, or social reputation
  2. Transaction monitoring — Watch for new positions, size changes, and exits in real-time
  3. Trade replication — Mirror detected trades in your wallet with configurable parameters
  4. Exit mirroring — When the tracked wallet exits, your bot exits too

On Kalshi (Centralized)

Kalshi does not expose individual wallet transactions. Copy-trading approaches include:

  1. Leaderboard tracking — Follow top performers in Kalshi competitions
  2. Position API monitoring — Track aggregate position changes where API data is available
  3. Social signal following — Replicate publicly shared trades from Kalshi traders

Quick Rankings

RankBotPricePlatformsWallets Tracked
1PolyFollow$49-149/moPolymarketUp to 20
2CopyShark$99-249/moPolymarket + KalshiUp to 50
3MirrorTradeFree-$79/moPolymarketUp to 5
4WhaleWatch$29-99/moPolymarketAlert-only (unlimited)

Key Parameters to Configure

Every copy-trading bot should let you control these settings:

ParameterWhat It ControlsRecommended Range
DelayTime between detection and execution1-30 seconds (shorter = better fills, but more front-running risk)
SizingPosition size relative to tracked wallet5-20% of tracked wallet’s size
Max positionMaximum USDC per tradeSet based on your total capital
Markets filterWhich markets to copyExclude very low-volume markets
Min trade sizeIgnore small trades from tracked wallets$50+ to filter noise
Exit strategyMirror exits or use own targetsMirror exits (default)

Detailed Reviews

1. PolyFollow

The most popular copy-trading bot for Polymarket, with clean UX and reliable execution.

Strengths:

  • Intuitive wallet tracking dashboard
  • Real-time trade mirroring with configurable delay (1-60 seconds)
  • Built-in wallet screening: PnL history, win rate, market diversity
  • Risk controls: max position per market, daily loss limits
  • Alert mode available (get notified without auto-executing)

Limitations:

  • Polymarket-only (no Kalshi support)
  • Monthly subscription eats into returns
  • 20-wallet limit on standard plan

Best for: Beginners and intermediate traders who want a reliable, low-maintenance Polymarket strategy.

2. CopyShark

Cross-platform copy-trading spanning Polymarket and Kalshi.

Strengths:

  • Tracks wallets on Polymarket and top traders on Kalshi
  • 50-wallet tracking limit (highest in the category)
  • Sophisticated sizing algorithms (proportional, fixed, or inverse-Kelly)
  • Correlation tracking — warns when tracked wallets converge on the same trade

Limitations:

  • Kalshi tracking is less granular than Polymarket
  • Higher price point ($99-249/mo)
  • More complex setup than PolyFollow

Best for: Traders who want cross-platform exposure and advanced position sizing.

3. MirrorTrade

Budget-friendly option with a free tier.

Strengths:

  • Free tier tracks up to 2 wallets
  • Simple setup — paste wallet address, set size ratio, go
  • Good for learning the mechanics of copy-trading
  • Open-source core (can inspect the code)

Limitations:

  • 5-wallet limit even on paid plan ($79/mo)
  • Basic risk management (no daily loss limits)
  • No Kalshi support
  • Slower detection than premium alternatives

Best for: Beginners testing copy-trading with minimal investment.

4. WhaleWatch (Alert-Only)

Not an auto-executing bot — WhaleWatch sends alerts when tracked wallets make moves.

Strengths:

  • Track unlimited wallets (alert-only, no position limits)
  • Multi-channel alerts: Telegram, Discord, email
  • Detailed trade breakdowns in each alert
  • Lowest price point ($29-99/mo)

Limitations:

  • No auto-execution — you must place trades manually
  • Manual execution adds delay, reducing edge
  • Alert fatigue with many tracked wallets

Best for: Traders who want intelligence from whale tracking but prefer manual execution control.

Risks of Copy-Trading

Copy-trading is not risk-free. Key risks to understand:

Execution Delay

Your bot enters after the tracked wallet, meaning you get a worse price. If the tracked wallet moves the market, your entry price is already worse. The bigger the wallet, the bigger this slippage.

Adverse Selection

You copy every trade, including losses. A wallet with a 55% win rate still loses 45% of the time. Diversifying across multiple tracked wallets reduces this but doesn’t eliminate it.

Strategy Decay

A wallet that was profitable for 6 months may change strategy, get lucky, or see their edge arbitraged away. Continuously monitoring tracked wallet performance is essential — remove wallets that underperform.

Front-Running

If many bots track the same wallets, the first followers get the best prices. Later followers face worse fills and reduced returns.

Choosing Wallets to Follow

Look for these characteristics:

SignalWhy It Matters
3+ months of positive PnLFilters out lucky streaks
50+ trades in the periodStatistically significant sample
Diverse market coverageNot concentrated in one outcome
Reasonable position sizesWhale-sized bets won’t scale to your capital
Consistent trade frequencyActive management, not buy-and-hold
Low drawdown periodsRisk management discipline

See Also

Rankings updated March 2026. Not financial advice. Built for builders.