May 23 (Reuters) - Canada's benchmark stock index opened lower on Tuesday after a long weekend, weighed down by miners, while cautious investors awaited earnings reports from the country's top lenders due through this week.
At 9:31 a.m. ET (13:31 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 85.45 points, or 0.42%, at 20,265.61.
(Reporting by Johann M Cherian in Bengaluru; Editing by Rashmi Aich)
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