April 22 (Reuters) - Canada's main stock index was flat at the open on Monday, after closing at a record high in the previous session, as gains in energy stocks were offset by declines across other sectors.
* At 9:30 a.m. ET (1330 GMT), the Toronto Stock Exchange's S&P/TSX Composite index .GSPTSE was down 6.62 points, or 0.04 percent, at 16,606.19.