The famously hot-headed hedge fund legend did not mince words Monday night during a retirement party attended by some of Wall Street’s biggest names, National Enquirer publisher David Pecker, and a comedian known for his impersonations of former President Obama, taking some parting shots at the Securities and Exchange Commission (SEC), which people close to him say he blames for forcing him out of the investment business after a 50-year run, the Fox Business Network has learned. Wall Street’s top cop sued Cooperman in 2016 for insider trading violations — allegations Cooperman vehemently and publicly denied.