 Charles Schwab Investment Management Inc. grew its holdings in Kraton Corp NYSE:KRA by 0.5 during the 2nd quarter, HoldingsChannel reports. The firm owned 420,015 shares of the specialty chemicals companys stock after purchasing an additional 1,916 shares during the quarter. Charles Schwab Investment Management Inc.s holdings in Kraton were worth 7,258,000 at the end of ... 