California State Teachers Retirement System raised its holdings in ImmunoGen (NASDAQ:IMGN) by 16.9% during the 4th quarter, according to its most recent filing with the Securities and Exchange Commission (SEC). The firm owned 157,447 shares of the biotechnology company’s stock after buying an additional 22,789 shares during the quarter. California State Teachers Retirement System owned 0.12% of ImmunoGen worth $1,009,000 as of its most recent SEC filing.
A number of other institutional investors have also made changes to their positions in the business. SG Americas Securities LLC increased its holdings in ImmunoGen by 75.7% in the 4th quarter. SG Americas Securities LLC now owns 18,416 shares of the biotechnology company’s stock valued at $118,000 after buying an additional 7,937 shares during the period. American International Group Inc. boosted its stake in shares of ImmunoGen by 19.2% in the 4th quarter. American International Group Inc. now owns 67,280 shares of the biotechnology company’s stock valued at $431,000 after purchasing an additional 10,849 shares in the last quarter. (Read more).