New York Stock Exchange promoted Stacey Cunningham to president, making her the first woman to be the sole head of the 226-year-old market.

The New York Stock Exchange promoted Stacey Cunningham to president, making her the first woman to be the sole head of the 226-year-old market. 

Previously chief operating officer, Stacey Cunningham replaces Tom Farley, who’s leaving the company, according to Josh King, a spokesman for NYSE parent Intercontinental Exchange Inc.

NYSE’s move means two of the top three U.S. stock exchange operators are led by women. Adena Friedman became chief executive officer of Nasdaq Inc. last year. For a time in the last decade, NYSE was jointly run by a woman, Catherine Kinney, but Cunningham is the first not to share the president title.

Cunningham, 43, got her first taste of NYSE in 1994, when she interned as a trader on the floor. She worked as a NYSE floor specialist for Banc of America Specialist Inc. from 1996 to 2005 before joining Nasdaq as an executive, according to her LinkedIn profile. She shifted over to NYSE in 2012, becoming COO in 2015.