How arbitrage works
Arbitrage is profiting from the same asset trading at two different prices in two places, by buying where it is cheap and selling where it is dear at the same time. Done correctly it is close to risk-free, because the two legs lock in the difference instantly. It exists because markets are not perfectly synchronised, and it is the force that drags prices back into line across exchanges and instruments.
Worked example
A coin trades at $30,000 on one exchange and $30,150 on another at the same instant. An arbitrageur buys at $30,000 and sells at $30,150, capturing $150 per coin minus fees, with no directional bet. The act of buying the cheap venue and selling the dear one nudges the two prices together, which is why such gaps are small and vanish in seconds.
Why arbitrage is hard in practice
Pure arbitrage is dominated by fast, automated players, and the edges are tiny, fee-sensitive, and gone almost instantly, so it is rarely a realistic retail strategy. On Volity, the more useful idea is relative value: spotting when two correlated instruments have diverged too far, which is closer to correlation trading than to textbook arbitrage. The clean version exists mostly in theory for retail.
Why it matters
Arbitrage is the mechanism that keeps prices consistent across markets, so understanding it explains why genuine free lunches are rare and quickly eaten. Treat any apparent risk-free profit with suspicion until you have counted every fee and delay. Related: correlation trading and slippage.
Learn more in our learn trading hub.
