 Charles Schwab Investment Management Inc. raised its position in shares of Astronics Co. NASDAQ:ATRO by 34.6 during the second quarter, HoldingsChannel.com reports. The fund owned 228,830 shares of the aerospace companys stock after buying an additional 58,846 shares during the quarter. Charles Schwab Investment Management Inc.s holdings in Astronics were worth 2,417,000 at the end ... 