That being said, we’re here with a list of the 7 best fast growing penny stocks to buy according to analysts. 7 Best Fast Growing Penny Stocks to Buy According to Analysts7. Lexicon Pharmaceuticals Inc. (NASDAQ:LXRX)Number of Hedge Fund Holders: 13Average Upside Potential: 43.84%Lexicon Pharmaceuticals Inc. (NASDAQ:LXRX) is one of the best fast growing penny stocks to buy according to analysts. Strive Inc. (NASDAQ:ASST)Number of Hedge Fund Holders: 13Average Upside Potential: 90.02%Strive Inc. (NASDAQ:ASST) is one of the best fast growing penny stocks to buy according to analysts. This consolidation aligns Semler’s medical technology assets and Bitcoin-heavy treasury with Strive’s mission as a premier Bitcoin treasury asset management firm.