 Charles Schwab Investment Management Inc. raised its holdings in shares of Navient Corp NASDAQ:NAVI by 1.2 during the fourth quarter, HoldingsChannel reports. The firm owned 2,656,679 shares of the credit services providers stock after purchasing an additional 32,026 shares during the period. Charles Schwab Investment Management Inc.s holdings in Navient were worth 36,344,000 as of ... 