The Toronto Stock Exchange is up 76 points midday in choppy trade, with most sectors lower as the market resumes trading after the Canada Day holiday.
Info tech and industrials are the sole gainers, up 0.9% and 0.5%, respectively.
Limiting gains are decliners in materials, which is down 1.5%, and telecoms (-0.8%), followed by financials (-0.6%).
In economic news, Canada's manufacturing sector expanded for a third straight month. The seasonally adjusted S&P Global Canada Manufacturing Purchasing Managers' Index (PMI) stood at 53.0 in June, a tick above May's 52.9.
The Trump administration also declined to renew the CUSMA trade agreement in its current form, necessitating annual reviews.
In stocks, Aecon Group (ARE.TO) is up 8.2% to C$49.25 after it said its consortium was awarded a C$4 billion contract by Greenlight Electricity Centre Limited Partnership to build a 932-megawatt power plant in central Alberta to serve data-center power demand.
Aecon's C$1.7 billion share of the contract value will be added to its construction segment backlog in the third quarter.