NDD Glossary
ConceptIntermediate

Execution Quality

An aggregate measure of how well trades are executed, factoring in speed, price improvement, fill ratio, and slippage.

Last updated: February 1, 2026
1

Execution quality is measured across multiple dimensions: price, speed, fill rate, and slippage.

2

Each trade generates data points that contribute to aggregate quality metrics.

3

Quality is evaluated relative to available market conditions at the time of execution.

4

Best execution frameworks weight these factors according to order type and client profile.

5

Ongoing monitoring ensures quality is maintained and not just a snapshot metric.