 Alliancebernstein L.P. grew its stake in shares of PC Connection, Inc. NASDAQ:CNXN by 29.7 in the 1st quarter, according to the company in its most recent 13F filing with the Securities and Exchange Commission SEC. The institutional investor owned 76,537 shares of the companys stock after acquiring an additional 17,542 shares during the period. Alliancebernstein ... 