July 28 (Reuters) - Canada's main stock index was set to open lower on Thursday as oil prices slipped to 3-month lows a day after data showed a surprise rise in U.S. crude and gasoline inventories.
The build added to an already huge glut of global refined products just as slowing economic growth dents outlook on demand.
September futures on the S&P TSX index were down 0.07 percent at 7:30 a.m. ET.
Canada's main stock index closed barely lower on Wednesday, hurt by losses in energy shares as oil prices slid on a surprise inventory build, which offset the impact of positive comments from the U.S. Federal Reserve.
No major Canadian data is scheduled for release on Thursday.
Dow Jones Industrial Average e-mini futures were down 0.02 percent at 7:30 a.m. ET, while S&P 500 e-mini futures were up 0.01 percent and Nasdaq 100 e-mini futures were down 0.01 percent.
Potash Corp of Saskatchewan , the world's biggest fertilizer company by capacity, cut its full-year profit forecast for the second time, but said potash markets had reached their low point.
Canadian miner Teck Resources Ltd reported a surprise quarterly profit as its costs declined. Teck, the largest producer of steelmaking coal in North America, said operating costs fell 15 percent to C$691 million ($525 million) in the second quarter.
Thomson Reuters Corp reported flat quarterly revenue excluding currency effects and reaffirmed its full-year sales outlook.
Cenovus Energy Inc posted a smaller-than-expected quarterly loss, helped by its cost reduction efforts, and said about two-thirds of the costs it had cut since 2014-end would be "sustainable" even when oil prices recover.
COMMODITIES AT 7:30 a.m. ET
Gold futures : $1,341; +1.08 pct
US crude : $41.91; -0.02 pct
Brent crude : $43.26; -0.48 pct
LME 3-month copper : $4,870.50; +0.42 pct
Alaris Royalty Corp : Haywood Securities cuts rating to "hold" from "buy"
Barrick Gold Corp : Canaccord Genuity raises rating to "buy" from "hold"
Western Energy Services Corp : TD Securities cuts price target to C$3.50 from C$4.25
0830 Advanced goods trade balance for Jun: Prior -$60.59 bln
0830 Initial Jobless Claims: Expected 260,000; Prior 253,000
0830 Jobless Claim 4-Weeks Average: Prior 257,750
0830 Continued jobless claims: Expected 2.130 mln; Prior 2.128 mln
1100 KC Fed Current production index for Jul: Prior 12
1100 KC Fed Composite Index for Jul: Prior 2
TSX market report
Canadian dollar and bonds report
Reuters global stocks poll for Canada
Canadian markets directory ($1= C$1.32) (Reporting by Nikhil Kumar in Bengaluru; Editing by Kirti Pandey)