Sept 14 (Reuters) - Canada's main stock index rose on Monday as signs of progress in developing a COVID-19 vaccine renewed hopes for a post-pandemic economic rebound.

* At 9:31 a.m. ET (1331 GMT), the Toronto Stock Exchange's S&P/TSX composite index was up 91.88 points, or 0.57%, at 16,314.34. (Reporting by Shashank Nayar in Bengaluru; Editing by Maju Samuel)