Canada’s main stock index edged lower on Monday as lack of progress in U.S.-Iran ⁠peace talks dampened ​risk appetite, while Canadian energy producer ARC Resources’ shares jumped after Britain’s Shell agreed to a $16.4-billion deal.

At 11 a.m. ET, the Toronto Stock Exchange’s S&P/TSX composite index was down 63.70 points, or 0.19 per cent, at 33,840.41.

Work ‌has not halted to bridge gaps between the U.S. and Iran, sources from mediator Pakistan said, despite failure of face-to-face diplomacy after President Donald Trump called off his envoys’ trip and said Iran ‌should call ​when it wants ‌a deal.

ARC’s shares rose 21.9 per cent, hitting their highest since ​2014.