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Execution latency Meaning

Execution latency is the time delay between when a trading instruction is sent and when it is acknowledged or executed by a trading venue. In electronic and algorithmic trading, latency is measured in milliseconds or microseconds and is a key determinant of competitiveness, especially in fast-moving or highly volatile markets such as crypto.

Latency can arise at multiple points in the execution chain. Network latency occurs as data travels between the trader’s system and the exchange.

Processing latency is introduced by order validation, risk checks, and matching engine logic. Additional delays may come from market data feeds, blockchain confirmations, or intermediary infrastructure.

Even small delays can result in missed prices, increased slippage, or partial fills, particularly during periods of rapid price movement. In crypto markets, execution latency is especially relevant because liquidity is often fragmented across many venues and prices can move quickly.

Professional trading firms invest heavily in low-latency infrastructure, co-location, optimized APIs, and direct connectivity to reduce delays. Lower execution latency improves the probability of filling orders at intended prices and reduces exposure to adverse market movements.

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