Muriel Faye "Mickie" Siebert (September 12, 1928 – August 24, 2013) was known as The First Woman of Finance (despite being preceded in owning a brokerage by Victoria Woodhull) because she was the first woman to own a seat on the New York Stock Exchange and was the first woman to head one of the NYSE's member firms.
She joined the 1,365 male members of the exchange on December 28, 1967.