In 1996, he co-founded the Liberty Hampshire Company, LLC with Steven E. Johnson, in
Chicago.[2] In 2000, he helped found
Guggenheim Partners and serves as its CEO.[3]
According to
Forbes, Walter has personal stakes in
Beyond Meat and
Carvana.[1] In 2021, it was reported that Walter had purchased numerous commercial and historic buildings in
Crested Butte, Colorado for an unknown purpose.[4][5]
On December 10, 2012, in its annual survey of the "50 Most Influential People in Sports Business," the SportsBusiness Journal named Walter the 8th most influential person in sports business due to the historic Dodgers purchase.[19]
Walter and several of his partners also bought the
Los Angeles Sparks basketball team in 2014.[20]
He later joined the bid led by his partner Boehly to buy the English football club
Chelsea in April 2022.[21]
The 2018-19
PSAWorld Squash Championships presented by the Walter Family doubled the previous highest purse of $500,000 to $1 million. Each winner was guaranteed the largest paycheck in history. Mark and Kimbra Walter have contracted for four more $500,000 Windy City Opens and four more $1 million World Championships over the next eight years, through 2027.[22]
PWHL
On June 29, 2023, the Mark Walter Group and BJK Enterprises purchased the intellectual property and other key elements of the
Premier Hockey Federation (PHF), a professional women's hockey league in the United States and Canada.[23] Headed by Walter and
Billie Jean King, respectively, both businesses had entered a partnership with the
Professional Women's Hockey Players Association (PWHPA) in May 2022, with the intent to create a new professional women's ice hockey league in North America.[24] The buyout changed the landscape in North American women's professional hockey, as it resulted in a single league, the
Professional Women's Hockey League, with stakeholders from both the PHF and PWHPA. The new league started in
Toronto on January 1, 2024, with King performing the ceremonial puck drop.[25] The Mark Walter Group owns the inaugural six teams.[26][27]