Federal Reserve Chair Janet Yellen waits for a hearing of the Joint Economic Committee in Washington, D.C., on Nov. 29, 2017. Brendan Smialowski/AFP/Getty Images hide caption
Fed Chair Janet Yellen on Monday submitted her resignation from the Federal Reserve Board. Earlier this month, President Trump named Jerome Powell to be the next Fed chair. Chip Somodevilla/Getty Images hide caption
Janet Yellen has served as chair of the Federal Reserve Board since 2014. Win McNamee/Getty Images hide caption
Trump's economic adviser Gary Cohn (left) and adviser Jared Kushner listen to President Trump at a meeting with business leaders Jan. 23. Chip Somodevilla/Getty Images hide caption
Trump's Flip-Flops On Economics Move Policies Toward The Status Quo
Republican presidential candidate Donald Trump speaks during a rally in Florida on Friday. Mark Wallheiser/Getty Images hide caption
Federal Reserve policymakers left rates unchanged, saying they were worried about job growth and did not want higher rates to affect hiring. Karen Bleier/AFP/Getty Images hide caption
An employee prepares to install the hood on a vehicle at a General Motors plant in Arlington, Texas. Federal Reserve policymakers say recent indicators point to a strengthening labor market. Bloomberg via Getty Images hide caption
Federal Reserve Board Chair Janet Yellen listens to questions during a House Financial Services Committee hearing on Capitol Hill on Wednesday. Delivering the Federal Reserve's semiannual Monetary Policy Report to the House Committee, Yellen aired caution about global economic conditions. Mark Wilson/Getty Images hide caption
Federal Reserve Chair Janet Yellen testifies before the Senate Banking Committee in July. This week, Yellen and other policymakers are weighing the Fed's first rate increase in nine years. Susan Walsh/AP hide caption
Lincoln Mercury vehicles at a dealership lot in Sterling Heights, Mich. Paul Sancya/AP hide caption
Federal Reserve chief Janet Yellen's remarks Wednesday made a lot of investors blink. But there's something to keep in mind before you sell based on her advice. Mark Wilson/Getty Images hide caption
Earlier this month, Fed Chair Janet Yellen told Congress that the economy is improving but hasn't bounced back all the way. Pablo Martinez Monsivais/AP hide caption
Federal Reserve Chair Janet Yellen speaking Monday in Chicago. John Gress/Reuters/Landov hide caption
Federal Reserve Board Chair Janet Yellen gestures as she testifies during a Senate Banking, Housing and Urban Affairs Committee hearing while delivering the Federal Reserves semiannual Monetary Policy Report on Capitol Hill Thursday. Mark Wilson/Getty Images hide caption