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Crypto Trading Arbitrage on Polymarket: A Practical Guide

Crypto trading arbitrage on Polymarket is the practice of buying mismatched outcome prices inside a single market to lock a mathematical edge. Most opportunities are intra-market: buy complementary YES/NO legs or a full multi-outcome set when the sum of best asks is below $1.00. You need fast feeds, low-latency order routing, and operations that handle CTF split/merge/redeem. PolyArb automates this workflow and runs live today.

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How Polymarket arbitrage actually works

On Polymarket, every outcome share is an ERC-1155 CTF token that pays $1 if it wins. In a binary market the fair prices sum to $1.00; when bestAsk(YES)+bestAsk(NO) < $1.00 an arbitrage edge exists. For multi-outcome markets the same logic applies across N outcomes: buy the complete set when Σ bestAsks < $1.00 and later merge/redeem the winner for $1 each. Executing this requires interaction with the CLOB, rapid order placement, and split/merge operations. Polymarket trades in pUSD on Polygon and the platform sponsors gas through its Relayer, but you still face slippage, partial fills, and resolution timing risk.

What tools you need

Latency and reliable market data matter: many free bots have ~800ms latency, which can lose fleeting spreads. PolyArb offers 40ms latency, Telegram and Discord alerts, and non-custodial execution for $99/month. It routes orders through the CLOB, watches best_bid_ask and tick_size_change events, and can perform FAK market orders and CTF operations automatically. You also need to manage fees and geography: Polymarket taker fees vary by category (0–1.8%) and some regions are blocked. Always check Polymarket’s rules and fee schedule before trading.

Risks and realistic returns

The arithmetic edge is real when the spread exists, but it is not without risks. Resolution disputes via UMA, settlement timing, smart-contract risk, taker fees, and failed fills can erode or invert profits. Historical arbitrageurs extracted roughly $40M from Polymarket between April 2024 and April 2025, but typical spreads on liquid markets last seconds to minutes. Treat each trade as probability-weighted: the spread is the baseline, and execution quality, fees, and timing determine realized P&L.

Where PolyArb fits in

PolyArb is designed for traders who want an automated, low-latency way to capture intra-market arbitrage on Polymarket. It’s non-custodial, live today, and advertises a $7.62 minimum guaranteed edge per trade, plus Telegram and Discord alerts for fills and opportunities. If you compare to other platforms (Kalshi, PredictIt, Manifold), remember those are separate markets with different rules and APIs; PolyArb specifically targets Polymarket’s CLOB and CTF workflow.

Start capturing Polymarket arbitrage today

Try PolyArb — $99/month, 40ms latency, non-custodial automation, and a $7.62 minimum guaranteed edge per trade. Sign up to receive Telegram and Discord alerts and start monitoring live opportunities.

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FAQ

What is crypto trading arbitrage on Polymarket?
It’s buying mispriced outcome shares inside a single Polymarket market — for binary: buying both YES and NO when their best asks sum to less than $1.00; for multi-outcome: buying a full set when the sum of best asks is below $1.00.
Do I need pUSD or gas to trade?
You trade on Polymarket with pUSD (a wrapped USDC). Polymarket sponsors gas via its Relayer, so users do not need MATIC for gas, but you must hold pUSD to buy outcome tokens.
Is arbitrage on Polymarket risk-free?
No. The arithmetic edge can be reliable, but execution risks exist: slippage, partial fills, taker fees (0–1.8%), UMA resolution disputes, settlement timing, and smart-contract risk can all affect outcomes.

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