Categories Articles Billionaire investor Mario Gabelli slams stock promoters, touts batteries, and discusses his Berkshire Hathaway bet in a new interview. Here are the 14 best quotes Post author By crystalg Post date July 14, 2021 Business Insider Business Insider… Tags batteries, Berkshire, Best, Billionaire, Discusses, Gabelli, Hathaway, Here, Interview, Investor, Mario, Promoters, Quotes, slams, Stock, touts