Private equity giant enjoys largest US debut in 5 years; Schwarzman enjoys largest share
                                
                                
                                    (Newser) -
                                    The Blackstone Group went public today, selling 133.3 million shares at $31 and raking in $4.13 billion, the largest American IPO since 2002. The keenly anticipated issue values the private equity firm, founded by Stephen Schwarzman 27 years ago with $400,000, at $33.5 billion; the price...