Kretinsky's business career began in the early 2000s, when he co-founded the energy trading company J&T Group. The company quickly gained a significant share of the Czech energy market, and in 2007, Kretinsky and his business partner, Petr Kellner, acquired a majority stake in EP Holding, one of the largest energy companies in Central Europe.
Under Kretinsky's leadership, EP Holding has expanded its operations across Europe, acquiring assets in Germany, Italy, Slovakia, and the United Kingdom. The company has also invested heavily in renewable energy sources, such as wind and solar power.
In addition to his energy interests, Kretinsky has also invested in other sectors, including media, retail, and healthcare. He is the majority owner of the Czech media company Central European Media Enterprises, and he has significant stakes in several European retailers, including Foot Locker and Casino Group.
Kretinsky's business acumen and entrepreneurial spirit have earned him accolades both in his home country and abroad. He has been named one of the most influential people in the Czech Republic by Forbes magazine, and he has received numerous awards for his business achievements.
In addition to his sporting interests, Kretinsky is also a keen collector of art and antiques. He has a large collection of paintings, sculptures, and other works of art from around the world. He is also a patron of several museums and galleries.
Kretinsky is a private person who rarely gives interviews. He is known for his sharp intellect, his attention to detail, and his ability to get things done. He is also known for his generosity, having donated millions of dollars to charitable causes.