(Bloomberg) Getting early support from investors is proving a linchpin for several of this year’s top performing US initial public offerings as it helps bolster confidence across the Street. Most Read from BloombergPowell Has Stopped Handing Gifts to Wall Street on Fed DayHunter Biden Plea Deal in Limbo After Judge Questions TermsUK Billionaire Joe Lewis Charged in US With Insider TradingRolex, Patek Prices to Keep Falling as Supplies Remain High, Morgan Stanley SaysFed Set to Raise Rates to