Charles Schwab Investment Management Inc. Has $57.53 Million Stake in Qualys, Inc. (NASDAQ:QLYS)

Charles Schwab Investment Management Inc. increased its position in Qualys, Inc. (NASDAQ:QLYS – Free Report) by 0.1% in the 1st quarter, according to its most recent disclosure with the Securities and Exchange Commission (SEC). The firm owned 456,857 shares o…