 Alliancebernstein L.P. lifted its stake in shares of Waste Connections Inc NYSE:WCN by 615.9 in the first quarter, according to its most recent Form 13F filing with the Securities and Exchange Commission. The institutional investor owned 148,787 shares of the business services providers stock after buying an additional 128,005 shares during the quarter. Alliancebernstein L.P. ... 