Live Nation, which owns the ticketing company Ticketmaster and owns or operates hundreds of venues, was accused in the antitrust lawsuit of unfairly wielding its power over the live music industry. Patrick T. Fallon/Getty Images hide caption

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Patrick T. Fallon/Getty Images

On Wednesday, a federal jury in Manhattan found that Live Nation and its subsidiary, Ticketmaster, operated as a monopoly that harmed consumers and overcharged ticket buyers. The decision came after four days of deliberations.

The decision is a victory for 33 states and the District of Columbia, which accused Live Nation of unfairly controlling too many aspects of the live entertainment industry at the expense of venues, artists and fans after the company settled an earlier antitrust suit with the U.S. Department of Justice. The verdict has the potential to reshape the live music industry in the United States.

New York was among the states that participated in the lawsuit.…