April 22 (Reuters) - Canada's main stock index was flat on Monday, after closing at a record high in the previous session, as gains in energy shares were offset by declines across other sectors.
* At 9:43 a.m. ET (1343 GMT), the Toronto Stock Exchange's S&P/TSX Composite index .GSPTSE was down 6.52 points, or 0.04 percent, at 16,606.29.
* Ten of the index's 11 major sectors were lower, while the energy sector .SPTTEN gained 1.1 percent.
* Oil topped $74 per barrel on Monday, the highest since November, as the United States was set to announce a further clamp down on Iranian oil exports, tightening global supplies. O/R
* U.S. crude CLv1 prices were up 2.3 percent per barrel, while Brent crude LCOc1 added 2.5 percent.
* The financials sector .SPTTFS edged down 0.2 percent, while the industrials sector .GSPTTIN fell 0.4 percent.
* The materials sector .GSPTTMT , which includes precious and base metals miners, shed 0.3 percent.
* On the TSX, 106 issues were higher, while 128 issues declined for a 1.21-to-1 ratio to the downside, with traded volume touching 13.72 million shares.
* Top percentage gainers on the TSX were oil and gas producers. Crescent Point CPG.TO jumped 4.7 percent, while Baytex Energy Co BTE.TO rose 3.6 percent.
* CannTrust Holding TRST.TO fell 4.4 percent, the most on the TSX, followed by a 2.6 percent decline in shares of Hudbay Minerals HBM.TO .
* The most heavily traded shares by volume were Prometic Life Sciences PLI.TO , Crescent Point Energy Corp CPG.TO and Stornoway Diamond Corp SWY.TO .
* The TSX posted five new 52-week highs and no new low.
* Across all Canadian issues, there were 29 new 52-week highs and seven new lows, with total volume touching 28.16 million shares.