April 18 (Reuters) - Canada's main stock index edged higher on Thursday, supported by energy stocks, although global growth concerns and a drop in shares of Rogers Communications kept a lid on further gains.
* At 9:33 a.m. ET (1333 GMT), the Toronto Stock Exchange's S&P/TSX Composite index .GSPTSE was up 21.67 points, or 0.13 percent, at 16,565.91.
* The main index is now on track to extend gains on to a fourth straight week.
* Ten of the index's 11 major sectors were higher, led by the energy sector .SPTTEN , which climbed 0.2 percent.
* U.S. crude CLc1 prices were up 0.2 percent, while Brent crude LCOc1 added 0.4 percent.
* Oil prices rose slightly on Thursday, boosted by a decline in U.S. inventories, ongoing supply cuts from OPEC and its allies and U.S. sanctions on Venezuela and Iran. O/R
* Rogers Communications Inc RCIb.TO tumbled 5.2 percent, the most on the TSX, after the company reported a quarterly profit that missed estimates on lower revenue from its media business. Rogers dragged down the TSX communications services sector .GSPTTTS , which fell 1.3 percent and was the only sector trading in the red.
* Euro zone businesses started this quarter on the back foot, with growth unexpectedly slowing again while. The sluggish data helped gold prices rise, which lifted the materials sector .GSPTTMT that added 0.1 percent. GOL/
* The financials sector .SPTTFS gained 0.2 percent, while the industrials sector .GSPTTIN rose 0.3 percent.
* On the TSX, 126 issues were higher, while 93 issues declined for a 1.35-to-1 ratio favouring gainers, with 9.29 million shares traded.
* The largest percentage gainer on the TSX was Canopy Growth Co WEED.TO , which jumped 8.6 percent after the company said it would buy U.S.-based pot firm Acreage Holdings ACRGu.CD in a deal valued at $3.4 billion. The most heavily traded shares by volume were Hexo Corp HEXO.TO , Aurora Cannabis ACB.TO and Canopy Growth.
* The TSX posted four new 52-week highs and two new lows.
* Across all Canadian issues, there were 20 new 52-week highs and five new lows, with total volume of 16.80 million shares.