March 19 (Reuters) - Canada's main stock index opened lower on Friday, pressured by weakness in bank stocks and data showing domestic retail sales fell in January hurt by coronavirus-led restrictions.
* At 9:35 a.m. ET (1335 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 21.24 points, or 0.11%, at 18,815.23.