Expert testimony

Expert testimony explains technical matters to a court. Manipulation trials turn heavily on it, because whether a pattern of orders is anomalous is not something a jury can assess unaided.

compliance and practice · updated 2026-09-08

See also

• Trade reconstruction — Trade reconstruction rebuilds the complete state of a market and a trader's activity at a given instant, from order messages, comm…
• Event study — An event study measures the price reaction to a specific event against what would otherwise have been expected. It is the standard…

Terms that refer here

Event study

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