Poland’s Financial Supervision Authority has disclosed a case involving suspected manipulation in bonds issued by the State Treasury and Bank Gospodarstwa Krajowego and traded on the Catalyst market. The regulator says the activity may have taken place between May 2022 and June 2025 and involved two key employees of a supervised investment-fund management company.
The significance of the case goes beyond the individuals involved. Government and BGK bonds are core instruments in Poland’s financial system, and the KNF communication raises a broader question about how asset managers monitor employee trading in markets that are often treated as lower-risk from a compliance perspective than equities.
Several trading patterns are under scrutiny
The KNF identified a number of patterns that may have distorted trading activity or prices. These include closely matched buy and sell orders, transactions that could create a misleading impression of market activity, artificial bid-offer spreads and orders designed to influence the visible market price.
The regulator also referred to transactions that may have created an artificial price floor. Importantly, these are allegations and indications of possible breaches, not a final judicial finding of guilt.
The case also includes suspected front-running
A separate element concerns the possible use of inside information about the investment strategy of the fund-management company. According to the regulator, the two employees may have known that the institution intended to buy or sell particular State Treasury or BGK bonds and then placed opposite orders on their own accounts with the expectation that those trades would be matched with the fund’s transactions.
This type of behaviour is commonly described as front-running: using advance knowledge of a client’s or institution’s planned order to seek a personal financial advantage.
The KNF estimates that one employee may have generated approximately PLN 646,000 in unauthorised gains and the second around PLN 350,000, bringing the combined amount to almost PLN 1 million.
Law-enforcement authorities have been notified
The regulator said its office submitted a notification to law-enforcement authorities on 29 July 2026. The suspected offences include manipulation of debt-instrument prices, misuse of inside information and improper use of professional secrecy for financial gain.
The case is therefore moving beyond supervisory analysis and into the criminal-law sphere. At the same time, the KNF is using the incident to send a wider message to the financial sector.
Compliance controls may need to cover more than shares
Investment firms commonly maintain restricted and watch lists to prevent employees from trading securities where they possess sensitive information. In practice, these controls have often focused heavily on shares and corporate bonds.
The KNF now argues that institutions should assess whether those mechanisms also need to cover government bonds when the nature of the fund’s activity creates a risk of conflicts of interest or misuse of confidential information.
This is particularly relevant because sovereign-bond markets are large and liquid, and transactions can appear routine even when an employee possesses detailed information about a fund’s upcoming orders.
Why the case matters for Poland’s capital market
Catalyst is an organised debt market operated by the Warsaw Stock Exchange and BondSpot. The presence of State Treasury and BGK securities means that confidence in trading practices on the platform matters not only to specialised investors but also to the broader credibility of Poland’s capital market.
The KNF communication suggests that regulators are increasingly willing to examine employee transactions across a wider range of instruments. For asset managers, banks and investment firms, the practical consequence may be tighter internal monitoring, more detailed conflict-of-interest controls and greater scrutiny of personal trading by staff with access to planned institutional orders.
Source: Polish Financial Supervision Authority (KNF), communication of 28 August 2026.
