June 24 (Reuters) - Canada's main stock index opened higher on Monday, lifted by a rise in materials and utilities stocks, while investors awaited a slew of domestic and U.S. inflation data along with commentary from Federal Reserve officials throughout the week.

At 9:36 a.m. ET (13:36 GMT), the Toronto Stock Exchange's S&P/TSX composite index was up 108.5 points, or 0.50%, at 21,663.4. (Reporting by Nikhil Sharma in Bengaluru; Editing by Vijay Kishore)