On this edition of Wall Street Week, Peter Kraus, Aperture Investors Chairman & CEO and Mona Mahajan, Edward Jones Senior Investment Strategist wrap up a turbulent week in the markets. Sam Zell, Equity Group Investments Founder and Chairman, on where... (more) he sees opportunities to invest and former US Treasury Secretary Lawrence H. Summers breaks down the most recent GDP numbers and the problem with lawmakers criticisms of the Fed.