Cross-Listed Arbitrage
Profiting from a temporary price gap between the same stock's two listings, after accounting for the currency exchange rate.
What it is
Cross-listed arbitrage is the practice of exploiting a price difference for the same security trading on two exchanges, such as a stock listed on both the TSX and NYSE. When one listing is momentarily cheaper than the other after currency conversion, a trader can in theory buy the cheap side and sell the expensive side. In efficient markets these gaps are tiny and close quickly.
Why it matters
The spread between two listings is a useful health check: a wide or persistent gap can flag stale pricing, a liquidity problem, or a data error rather than a free profit. Real arbitrage is hard for retail investors because trading costs, FX conversion fees, settlement timing, and bid-ask spreads usually erase the gap before you can capture it.
How it's calculated
Convert one listing's price into the other's currency at the current exchange rate, then take the percentage difference between that converted price and the other listing's actual price.
How Quintarthai uses it
Quintarthai computes the dual-listed TSX/NYSE arbitrage spread with each listing in its own currency on the cross-border page, with click-to-source provenance on the figures.