Suspicious transaction report

A suspicious transaction and order report is the filing European firms must make when they suspect market abuse. The obligation is on the firm to report suspicion, not to prove it.

Also known as STOR. compliance and practice · updated 2026-09-08

See also

• Market abuse regulation — The Market Abuse Regulation is the European Union framework prohibiting insider dealing, unlawful disclosure and market manipulati…
• Alert — An alert is an automated flag raised by a surveillance system. The overwhelming majority are false positives, so how a firm triage…

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