Wiregrass Investment Management LLC boosted its stake in shares of Microsoft Corporation (NASDAQ:MSFT – Free Report) by 13.2% during the 1st quarter, Holdings Channel.com reports. Wiregrass Investment Management LLC’s holdings in Microsoft were worth $4,719,000 at the end of the most recent quarter. Key Microsoft NewsHere are the key news stories impacting Microsoft this week:Positive Sentiment: Citi raised its Microsoft price target to $600. Insider ActivityIn related news, EVP Takeshi Numoto sold 4,810 shares of Microsoft stock in a transaction dated Tuesday, August 4th. Microsoft Company Profile(Free Report)Microsoft Corporation is a global technology company headquartered in Redmond, Washington.