The U.S. Justice Department plans to allege that Visa Inc. illegally monopolized the U.S. debit card market, according to people familiar with the matter.
The antitrust division is set to file a lawsuit as soon as Tuesday accusing the operator of the largest U.S. payments network of a range of anticompetitive conduct, said the people, who asked not to be identified discussing the case. The government is expected to file the case in federal court.
Antitrust enforcers are preparing to accuse Visa of taking steps to keep rivals from challenging its dominance in the debit card market, said the people. The government’s allegations include that Visa made exclusive agreements to hinder the expansion of competing networks and thwarted efforts by technology companies to enter the market.
Visa shares fell as much as 1.95% in post-market trading in New York on Monday after the news.