KNF market manipulation probe: Polish regulator alerts prosecutors over 5 stocks
The Polish Financial Supervision Authority has alerted law enforcement agencies over suspected KNF market manipulation involving five Warsaw-listed companies. The watchdog identified illicit trading patterns executed by an individual investor as well as an organised network of at least six related entities across multiple trading sessions.
⚡ Key numbers:
- 32 trading sessions with alleged manipulation in MLK Foods in 2021–2022
- At least 6 affiliated entities linked to schemes on FON and Atlantis shares
- 8 trading sessions under investigation regarding Raen shares in 2023–2024
- 3 trading sessions in 2021 flagged for Coal Energy transactions
Criminal notifications filed with prosecutors
Poland's financial watchdog, the Komisja Nadzoru Finansowego (KNF), has notified law enforcement authorities regarding suspected market manipulation in violation of the Act on Trading in Financial Instruments. The allegations involve trading in shares of MLK Foods Public Company Ltd., Coal Energy, Raen (currently Grupa Virtus), FON SE, and Atlantis SE.
According to reporting by Bankier.pl, the supervisory office submitted the documentation in two distinct actions. The notification concerning transactions in FON SE and Atlantis SE was officially lodged on 3 September 2026, while the referral concerning MLK Foods, Coal Energy, and Raen was submitted on 21 September 2026.
Individual investor tied to three listed issuers
In its assessment of MLK Foods, Coal Energy, and Raen, the supervisor attributed the manipulative activities to an individual investor, as reported by Interia Biznes. Suspected market manipulation in MLK Foods shares occurred across 32 individual trading sessions between 2021 and 2022.
In Coal Energy shares, the identified anomalies were recorded during 3 trading sessions in 2021. For Raen, the watchdog identified illicit activity taking place over 8 individual sessions between 2023 and 2024. Market participants checking regulated entities often consult an official warning list of unauthorised firms to monitor regulatory actions.
Coordinated network targeted FON and Atlantis
The supervisor identified a different structure behind operations involving FON SE and Atlantis SE. The KNF stated that the manipulative conduct in FON SE shares between 7 December 2023 and 23 January 2024 was orchestrated by a group of at least six related entities.
Investigators established that this identical operational scheme had previously been deployed by the same entities on Atlantis SE stock. Those operations took place during two timeframes: from 7 January to 2 March 2021, and again from 18 January 2021 to 20 January 2022.
What to watch next
- Decisions by Polish prosecutors on whether to open formal investigations
- Potential administrative fines or formal sanctions issued by the KNF
- Corporate disclosures and liquidity changes in the five targeted equities
Frequently asked questions
Which listed companies are covered by the KNF investigation?
The referral covers trading in MLK Foods Public Company Ltd., Coal Energy, Raen (now Grupa Virtus), FON SE, and Atlantis SE.
When were the formal notices submitted to prosecutors?
The KNF filed notifications regarding FON SE and Atlantis SE on 3 September 2026, followed by MLK Foods, Coal Energy, and Raen on 21 September 2026.
Who carried out the alleged market manipulation?
The regulator identified an individual investor behind the trades in MLK Foods, Coal Energy, and Raen, while a group of at least six related entities was implicated in FON SE and Atlantis SE.
Sources: Interia Biznes, Bankier.pl.
Disclaimer: This article is for information purposes only and does not constitute investment advice. Data as of Oct 24, 2026, 13:07 may vary by source. Trading leveraged CFDs carries a high risk of losing money.
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