 Foresite Capital Management IV LLC increased its position in shares of Myokardia Inc NASDAQ:MYOK by 18.1 in the first quarter, Holdings Channel reports. The institutional investor owned 307,400 shares of the biotechnology companys stock after buying an additional 47,030 shares during the period. Myokardia comprises 17.3 of Foresite Capital Management IV LLCs portfolio, making the ... 