A stock trader claps at the end of trade at the New York Stock Exchange. EMMANUEL DUNAND/AFP via Getty Images 2021 was a record year for IPOs, with 2,388 new companies listing their shares around the globe.The red-hot IPO market this year occurred amid a relentless grind higher in the broader stock market.These are the 10 best performing US stocks that went public in 2021. Record highs in the stock market have facilitated a boom in new company listings this year, with a record 2,388 firms going public around the globe, according to data from Ernst and Young. Helping drive