“…The 12 large investment banks involved in this agreement are compelled to clearly separate their financial research and investment banking activities. A great deal of empirical literature shows that the GS was effective in reducing analysts' optimistic bias (Heflin et al, 2003, Mohanram and Sunder, 2006, Kadan et al, 2009, Clarke et al, 2011, Guan et al, 2012, Hovakimian and Saenyasiri, 2010, 2014.…”