September 21, 2026

The screen can show a tiny opportunity while the order path carries a much larger operational risk. Capacity is where size consumes edge.

A compact operating checklist is: 1) model spread, temporary impact, permanent impact and opportunity cost; 2) measure costs by participation rate and volatility;

What would make you reduce risk first: worse execution, weaker signal quality or rising portfolio concentration?

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The research behind this lesson

This paper explains The seminar frames electronic markets as price-time-priority queues. It separates queue value into spread capture versus adverse-selection cost and the option value of retaining a place in line.

Applied to this XCore lesson: An order lifetime therefore cannot be based on elapsed time alone: the system must reassess whether its queue position, expected spread and adverse-selection risk still justify keeping the order alive.

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Source: High-Frequency Trading and Modern Market Microstructure

Educational content only. Trading leveraged products involves risk.