Former Fed Chair Janet Yellen attended a Wall Street event where she discussed the economy and monetary policy. : Janet Yellen cashed in with a visit to Wall Street two months after stepping down as Federal Reserve chair, discussing the U.S. economy and interest rates at events on Monday that included a dinner for 40 at a CEO's Manhattan penthouse. In a short telephone interview, Yellen, who ran the U.S. central bank the last four years, said she revealed no confidential information.