May 4 (Reuters) - Canada's main stock index rose on Tuesday, helped by energy stocks as crude prices gained on optimism over fuel demand, although data showing the country's C$1.1 billion trade deficit in March capped gains.
* At 9:39 a.m. ET (13:39 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was up 3.15 points, or 0.02%, at 19,216.31.
* Oil prices rose after more U.S. states eased lockdowns and the European Union sought to attract travellers. O/R
* Canada's trade balance shifted back to a deficit in March following two consecutive months of surplus, as imports jumped significantly while exports edged up slightly, Statistics Canada said. The energy sector .SPTTEN climbed 0.7% as U.S. crude CLc1 prices were up 1.7% a barrel, while Brent crude LCOc1 added 1.7%. O/R
* The financials sector .SPTTFS remained unchanged, while the industrials sector .GSPTTIN fell 0.2%.
* The materials sector .GSPTTMT , which includes precious and base metals miners and fertilizer companies, added 0.6% as gold futures GCc1 fell 0.2% to $1,788.2 an ounce. GOL/
* On the TSX, 92 issues were higher, while 128 issues declined for a 1.39-to-1 ratio to the downside, with 16.17 million shares traded.
* The largest percentage gainers on the TSX were Gibson Energy GEI.TO and Colliers International Group Inc CIGI.TO , rising 5.3% and 5.0% respectively after strong quarterly results. Ballard Power Systems Inc BLDP.TO fell 16.7%, the most on the TSX, after dull quarterly results. The second biggest decliner was Bausch Health Co BHC.TO , down 7.6% after reporting a quarterly loss.
* The most heavily traded shares by volume were Uex Corp UEX.TO , Nevada Copper NCU.TO and Tetra Bio-Pharma Inc TBP.TO .
* The TSX posted 15 new 52-week highs and no new lows.
* Across all Canadian issues there were 48 new 52-week highs and 7 new lows, with total volume of 39.04 million shares.