Woodhull, with sister Tennessee (Tennie) Claflin, became the first female stockbrokers and in 1870 they opened a brokerage firm on Wall Street. Wall Street brokers were shocked. "Petticoats Among the Bovine and Ursine Animals," the New York Sun headlined.Woodhull, Claflin & Company opened in 1870, with the assistance of the wealthy Cornelius Vanderbilt, an admirer of Woodhull's skills as a medium; he is rumoured to have been Tennie's lover, and to have seriously considered marrying her.Woodhull made a fortune on the New York Stock Exchange by advising clients like Vanderbilt. On one occasion she told him to sell his shares short for 150 cents per stock, which he duly followed, and earned millions on the deal. Newspapers such as the New York Herald hailed Woodhull and Claflin as "the Queens of Finance" and "the Bewitching Brokers."