Shares of Peloton Interactive (NASDAQ: PTON) have surged by 16% after David Einhorn, billionaire, and hedge fund manager, called the stock undervalued at Robinhood’s (NASDAQ: HOOD) investor conference on October 23.The announcement was made as the Greenlight Capital founder was riding a Peloton bike — previously, in June, the fund had disclosed a $6.8 million stake in the business.The home fitness giant’s fall from an all-time high (ATH) of $162 during the pandemic was swift and unrelenting — following mism ...