S&P/TSX composite finishes more than 100 points lower, U.S. markets mixed

News Snapshot:

TORONTO — Canada's main stock index fell more than 100 points to cap off Tuesday's trading session, weighed down by losses in the basic materials sector, while U.S. stock markets were mixed. The S&P/TSX composite index was down 116.71 points at 26,903.57. Theresa Shutt, chief investment officer at Harbourfront Wealth Management, said there are a couple of reasons for the decline, including uncertainty around trade negotiations between Prime Minister Mark Carney and U.S. President Donald Trump. "There was some discussion that this would be settled by the end of summer. I think we're all still hopeful that it will be,...