* TSX up 52.68 points, or 0.33 percent, to 16,184.32
* All of the TSX's 10 main groups move higher
TORONTO, Dec 19 (Reuters) - Canada's main stock index rose in morning trade on Tuesday, boosted by gains among its biggest banks and other financial stocks, while Great Canadian Gaming Corp GC.TO surged after it won a contract to operate facilities in the Toronto region.
* At 9:57 a.m. ET (1457 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was up 52.68 points, or 0.33 percent, to 16,184.32.
* All 10 main groups were higher, with the index hovering just below the all-time high it hit in the prior session.
* The energy group climbed 0.6 percent as oil prices pushed higher, while the financials group gained 0.5 percent and industrials rose 0.4 percent.
* Royal Bank of Canada RY.TO added 0.8 percent to C$103.18 and Canadian Imperial Bank of Commerce CM.TO rose 1.2 percent to C$121.82.
* Great Canadian Gaming jumped 14.1 percent to C$34.10 after it and Clairvest Group Inc CVG.TO said they had won a contract to operate gaming venues in the Toronto area. The materials group, which includes precious and base metals miners and fertilizer companies, added 0.5 percent.
* Sandstorm Gold Ltd SSL.TO rose 2.2 percent to C$6.08 after agreeing to buy a royalty stake in a mine in Burkina Faso.