Guide

Suspected insider trading or market manipulation: prepare an AMF whistleblower report

Preserve lawfully obtained information, build a chronology of people, trades and communications, then choose whistleblowing, complaint or police according to the situation.

Priority

Do not trade on material non-public information, advise anyone to do so or try to trigger further trades to collect evidence.

Separate the processes

A whistleblower report gives potential violations to investigators. A complaint often concerns your relationship with a firm, while a fraud loss may also require the bank and police.

Protect the information

Keep only material held lawfully. Do not access an account without authorization, alter files or publicize the report.

Build the chronology

Identify people or companies, securities, known accounts, dates, trades, public announcements, communications and the precise basis for suspicion. Explain each document’s source.

Submit and remain reachable

Use the AMF whistleblower program, attach useful documents and provide a safe way for investigators to contact you.

Whistleblower program — AMF

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Official sources are linked in the guide. Checked August 29, 2026; confirm current rules, forms and deadlines with the responsible authority.
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