Sigma Lithium Co. (NASDAQ:SGML – Get Rating) was the recipient of a significant growth in short interest during the month of April. As of April 30th, there was short interest totalling 2,890,000 shares, a growth of 25.7% from the April 15th total of 2,300,000 shares. Currently, 3.2% of the company’s shares are sold short. Based […]