The billionaire investor William A. Ackman has taken a large stake in Nomad Foods Limited, a company that acquires food businesses.

Pershing Square Capital Management, Mr. Ackman’s New York hedge fund, said it owned a 22 percent stake in the so-called special purpose acquisition company, or SPAC, according to a filing made to the London Stock Exchange on Monday. SPACs raise money from investors to make acquisitions.

Nomad was co-founded by Martin Franklin and Noam Gottesman last year. In April, Nomad announced a 2.6 billion euro acquisition of a European frozen food company, Iglo Foods Holdings.

Mr. Ackman talked about Nomad at a Manhattan investor conference last month, saying that its anchor investment in Iglo would be used as “a base for future food industry acquisitions,” according to a copy of the presentation posted to a website for Pershing Holdings, Mr. Ackman’s offshore fund.