Marek manages Catalus Capital Management, which he co-founded in early 2011. He is responsible for overseeing all of the fund’s activities including investment strategy and execution, in addition to portfolio management. 

Marek was previously a Managing Director of Corporate Strategy and M&A at Nasdaq, an S&P 500 company with a market capitalization of over $10 billion. In this capacity he led the evaluation of dozens of corporate mergers, acquisitions, joint ventures, and investments. He also worked directly with the leaders of Nasdaq's five principal business units in order to develop growth plans, evaluate internal operations, and identify acquisition targets. 

Preceding Nasdaq, Marek was an Investment Banking Analyst at Fieldstone Private Capital, focused on the energy and infrastructure sectors. He advised clients on investments ranging from a greenfield wind farm development project to a $1.6 billion acquisition of a power plant portfolio. Throughout his career Marek has been involved in a number of entrepreneurial ventures including investing in Big Apple Livery Leasing, Kinespirit Studios, Investor Nation, starting various automotive related businesses, advising several start-up hedge funds, and a number of real estate projects.

Marek graduated from the University of Pennsylvania with a major in Economics and a minor in Urban Real Estate from The Wharton School.