June 25 (Reuters) - Canada's main stock index opened higher on Thursday, lifted by gains in the materials sector, as a tech-led rally on Wall Street and upbeat U.S. economic data bolstered investor sentiment north of the border.

At 9:30 a.m. ET, the Toronto Stock Exchange's S&P/TSX Composite Index .GSPTSE was up 0.4% at 34,880.01 points.