Definition
Smart order routing is an automated process that evaluates liquidity across multiple trading venues in real time and determines the optimal way to split and direct an order to achieve the best available price, taking into account fees, depth, latency, and settlement risk. In digital asset markets, where liquidity is fragmented across 100+ centralized exchanges, dozens of decentralized venues, and a growing number of OTC desks, SOR is the institutional capability that turns fragmentation into a solvable optimization problem rather than a manual venue-selection burden on the trader.
Example
A prop desk needs to buy 100 BTC. An SOR engine breaks the order into child orders sized to match available depth at each venue, routes them to minimize total execution cost (price plus fees plus expected slippage), and monitors fills in real time to adjust routing if conditions change.
How Liquid Mercury Handles This
Mercury Pro's SOR exposes configurable routing logic trees that the desk can inspect and customize, with backtest methodology documented and TCA feedback flowing back into routing policy.