Less than a year ago, the richest Pole in the Forbes ranking had a fortune valued at PLN 28 billion, and the top ten Polish businessmen could boast of total assets amounting to almost PLN 130 billion.
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Among them, but also looking more broadly at the list of 100 Polish billionaires, many have companies that can be found on the stock exchange. This makes it quite easy to control what happens to their market value. As we have already written in Business Insider, 2025 was an exceptionally successful year for most investors from the Warsaw Stock Exchange. The most prestigious index, WIG20, even had the best year in the 21st century, gaining in value by approximately 45%. We checked whether leading businessmen entered the New Year in equally champagne moods.
Tomasz Biernacki (Dino) Tomasz Biernacki hides his image. However, his stores are well known to Poles
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Longfin Media/Shutterstock
Tomasz Biernacki was at the top of the list of the richest Poles whose businesses are listed on the stock exchange. The most mysterious businessman in the country has more than half of the shares of the Dino store chain in his hands. At the beginning of 2025, the stock exchange valued the entire company at PLN 39,324 million. A year later, this amount increased to PLN 40 billion 196 million (by 2.2%)..
See also: Dino's shares are falling exceptionally hard. What is happening to the company of the most mysterious Polish businessman?
This means that Tomasz Biernacki became rich (this term should be understood as an increase in the value of his assets; it is not synonymous with cash flow) by approximately PLN 445 million for a year.
Tomasz Biernacki is famous for his great discretion and avoidance of media publicity, which does not prevent him from managing one of the most dynamically developing retail chains in Europe, which at the end of 2025 already had over 3,000. shops.
Rafał Brzoska (InPost) Rafał Brzoska
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Andrzej Iwanczuk/REPORTER / East News
Unlike Tomasz Biernacki, Rafał Brzoska's face is well known to most people. Recently, not only thanks to the success of parcel lockers (including the offer to purchase the company), but also due to its presence in politics and government support in deregulation. A long time ago, his business was listed on the Warsaw Stock Exchange. Now InPost is listed on the Amsterdam Stock Exchange.
At the beginning of 2025, the stock exchange valued the entire company at approximately EUR 8.25 billion. A year later, this amount dropped to EUR 5.19 billion (by 37%).. This meant that Rafał Brzoska, who has approx. 12.5% through A&R Investments. shareson January 2, 2025, he had significantly less money in stocks – for a year from his brokerage account approximately EUR 382 million (equivalent to approximately PLN 1.61 billion) evaporated.
This balance improved significantly in the following days, after the possible takeover of InPost became widely known. We wrote more about this HERE.
Below are the quotations of InPost certificates of deposit on the WSE.
The Solorz family (Cyfrowy Polsat, ZE PAK) Piotr Żak – president of Cyfrowy Polsat and ZE PAK
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Radoslaw NAWROCKI / Forum / Forum Polish Photographers Agency
Zygmunt Solorz and his children were talked about all year long. Every now and then the topic of succession came back like a boomerang, and the senior of the family was dismissed from the supervisory boards of various companies of the empire that he had created. It seems that the court in Liechtenstein sided with the children. In effect this Aleksandra Żak, Tobias Solorz and Piotr Żak take over at Cyfrowy Polsat. Piotr Żak became the president of both this company and ZE PAK and he is emerging as the leader.
How has the stock market valuation of the Solorz family businesses changed? The capitalization of Cyfrowy Polsat at the beginning of 2025 was PLN 9.05 billion, and ZE PAK – PLN 721 million. After a year, these amounts are PLN 8.19 billion and PLN 1.02 billion, respectively. The balance is therefore negative – approximately PLN 580 million. Most of this goes to major shareholders.
Dominika Kulczyk (Polenergia) Dominika Kulczyk
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Wojciech Strozyk/REPORTER / East News
The name Kulczyk could not be missing from the list of the richest Poles. On the stock exchange we can find Polenergia, whose face and key owner is Dominika Kulczyk, the richest Pole. In 2025, Polenergia boasted of various investments in renewable energy sources. The business fits into the current fashion in Europe, but how is it valued by investors?
See also: The second consecutive quarter of losses for Dominika Kulczyk's company. Electricity prices turned out to be too low [ANALIZA]
At the beginning of 2025, Polenergia had a capitalization of approximately PLN 5,482 million. A year later it was valued at PLN 4,293 million (21% less). Dominika Kulczyk indirectly through Mansa Investments has 43 percent. shares. This means that the value of these shares alone decreased by approximately PLN 511 million in a year.
Polenergia is the largest Polish private energy group. The company focuses on vertically integrated activities in the field of renewable energy sources, including generation from onshore wind and photovoltaic farms, distribution and trading of green energy.
In a comment sent to Business Insider Polska, the company's representatives point out that the real value of the company is much higher. In the case of a company, the market price is not an indicator of its true value due to the limited free float. During the year, the company made investment decisions regarding two strategic projects that will generate profits and whose economic viability has been confirmed by a number of global financial institutions.
Dariusz Miłek (CCC)
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Damian Lemanski / Forum Polish Photographers Agency
Among the 10 richest Poles in the Forbes ranking at the beginning of 2025 was Dariusz Miłek, who is behind the success of the largest Polish shoe manufacturer – the CCC Group. If we counted his assets in the first hours of 2026, looking only at CCC, it would turn out that a lot of money had been lost there.
See also: CCC in the Financial Times. See the announcement that caused confusion on the stock exchange
A year ago, the CCC Group was valued by the stock exchange at PLN 13,484 million. At the first session of this year it was PLN 9,335 million. Taking into account that Dariusz Miłek owns 33 percent. shares, the value of his portfolio is now approximately PLN 3 80 million, i.e. over PLN 1.3 billion less.
The Juroszek family (Atal) Zbigniew Juroszek
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Kamila Kotusz / Agencja Gazeta
In the above-mentioned Forbes ranking, the Juroszek family was just ahead of Dariusz Miłek a year ago. After a year, it became even stronger. This is one of the most influential business dynasties in the country, which built its power on the foundation of a nationwide developer called Atal. The empire is headed by Zbigniew Juroszek.
Although the Juroszek family also achieved success in the bookmaking industry through the STS group, it is the real estate pillar that remains the heart of their investment holdingcurrently managed with the strong support of the younger generation in the person of Mateusz Juroszek.
A year ago, the stock exchange valued Atal at approximately PLN 2 billion. After 12 months, the capitalization reached PLN 2.5 billion. That's a 25% jump. The vast majority of this surplus goes to the Juroszek family – they own over 75%. shares.
Marcin Iwiński (CD Projekt)
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Charley Gallay/Stringer/Getty Images
For years, among the 20 largest companies on the Warsaw Stock Exchange has been a representative of the entertainment industry – a game producer with the CD Projekt logo. Marcin Iwiński is the co-founder and one of the key figures in the history of this company. Together with Michał Kiciński, in 1994 he laid the foundations for the largest Polish video game studio. For nearly three decades, he served as vice-president and co-manager of the company, supervising its development from a distributor of boxed games to a global producer of such hits as the “Witcher” series and “Cyberpunk 2077”.
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In 2022, he announced his resignation from current operational management on the board, deciding to move to the company's supervisory bodies. From January 1, 2025, Marcin Iwiński holds the prestigious position of co-chairman of the supervisory board. He is the largest shareholder – he currently holds less than 13 percent. CD Projekt shares. A year ago, the capitalization of the entire company was PLN 19,262 million. After 12 months, it increased to PLN 24 billion and PLN 148 million, respectively increasing Marcin Iwiński's fortune to over PLN 3 billion.
Jakub Zabłocki (XTB)
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KRZYSZTOF SKLODOWSKI / Forum Polish Photographers Agency
Jakub Zabłocki is the founder and main shareholder of Dom Maklerski XTB. Although he has gradually monetized some of his shares in recent years, he still does remains the key figure controlling the company through the entity XX ZW Investment Group, owning almost 36%. shares. Under his supervision, XTB underwent a transformation from a platform associated mainly with the Forex market to an “investment super application” offering a wide range of products.
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The success of XTB on the stock exchange means that Jakub Zabłocki regularly ranks at the top of the list of the richest Poles, being one of the few billionaires from the fintech sector. At the beginning of 2025, the entire company was valued by the stock exchange at PLN 7,971 million. After 12 months, this value was higher by almost 10%. — amounted to PLN 8,629 million. Jakub Zabłocki's fortune increased proportionally to approximately PLN 3.1 billion.
Author: Damian Słomski, journalist of Business Insider Polska
