 State Street Corp boosted its holdings in shares of NetScout Systems, Inc. NASDAQ:NTCT by 2.0 during the 1st quarter, HoldingsChannel reports. The institutional investor owned 2,405,788 shares of the technology companys stock after buying an additional 46,749 shares during the period. State Street Corps holdings in NetScout Systems were worth 56,945,000 as of its most ... 