Polymarket Odds: How to read prices and arbitrage them
Polymarket odds are the market prices (in dollars) that represent the probability implied by outcome shares on Polymarket. For binary markets, YES + NO should sum to $1.00 in fair value; any divergence is an opportunity for intra-market arbitrage. Traders use order-book data, best-ask sums, and complete-set CTF operations to lock in an edge. PolyArb automates that process with 40ms latency, Telegram and Discord alerts, and a $7.62 minimum guaranteed edge per trade.
What "Polymarket odds" actually mean
On Polymarket each outcome price is quoted in dollars of pUSD and represents the market-implied probability of that outcome. In a binary market, a YES priced at $0.63 implies 63% chance; the complementary NO should be $0.37 at fair value. Multi-outcome markets distribute $1.00 across all outcomes. Prices come from the CLOB order book and tick sizes are usually $0.01, tightening to $0.001 near extremes.
Where odds diverge: the arithmetic of intra-market arbitrage
Arbitrage arises when the sum of best-ask prices across complementary outcomes is below $1.00. Buying the complete set via CTF split mints outcome tokens you can later redeem for $1.00 each, locking the difference as edge. PolyArb watches the CLOB in real time and executes FAK-style fills to capture these opportunities.
Practical limits and risk you must account for
Do not assume every apparent edge is free profit. Risks include slippage and partial fills, taker fees (varying up to 1.8% by category), UMA resolution or dispute delays, and smart-contract/settlement timing. Geographic restrictions also block new orders from many jurisdictions. PolyArb quantifies these factors and guarantees a $7.62 minimum edge per trade while remaining non-custodial.
How PolyArb fits into your workflow
PolyArb runs on Polygon, reads the CLOB and Gamma APIs for market state, and routes orders through the Polymarket Relayer model used by builders. Subscribers get low-latency fills, Telegram and Discord alerts, and a dashboard for monitoring open opportunities. The product is live today at $99/month and designed for traders who want execution-grade latency versus free bots.
Start capturing Polymarket odds with PolyArb
Subscribe to PolyArb for $99/month to get 40ms latency, guaranteed minimum edge per trade, and live Telegram + Discord alerts. Non-custodial and live today.
FAQ
- How do Polymarket odds translate to probability?
- Each outcome price in dollars equals its market-implied probability. For binary markets a price of $0.42 equals a 42% implied probability; the complementary outcome should sum to $1.00 in a balanced book.
- Can I use odds to make guaranteed profits?
- Apparent arithmetic edges can be captured via intra-market arbitrage, but they are not without risk. Slippage, fees, partial fills, UMA disputes, and settlement timing can erase profits. PolyArb accounts for these and guarantees a $7.62 minimum edge per executed trade.
- Where does Polymarket get its prices?
- Prices come from the CLOB order book on Polygon using pUSD. Public reads are available via the Gamma, Data, and CLOB REST APIs and the market WebSocket for realtime book updates.
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