Bank of Montreal BMO.TO beat analysts' estimates for second-quarter profit, as the lender set aside lower-than-expected provisions in the quarter. May 26 (Reuters) - Futures for Canada's main stock index rose on Wednesday as gold prices jumped on the back of softer Treasury yields and a weaker dollar, after U.S. Federal Reserve officials downplayed inflation concerns. Canada's biggest pension managers boosted their investments in the country's major oil sands companies in the first quarter of 2021, raising questions about the funds' recent commitments to greening their portfolios.