(Adds portfolio manager quote, details on Canadian Natural Resources, Teck Resources, Potash Corp, Manulife, updates prices)
* TSX closed up 82.62 points, or 0.61 percent, at 13,719.82
* It touched its highest since Nov. 4 at 13,730.59
* Nine of the TSX's 10 main groups ended higher
By Fergal Smith
TORONTO, April 18 (Reuters) - Canada's main stock index rose to a five-month high on Monday as energy stocks rallied after oil pared losses, while mining and financial sector stocks also advanced.
The index has rebounded 19 percent since hitting a near 3-1/2-year low in January.
U.S. corporate earnings have not been as bad as feared, while recent improvement in economic data has left investors more optimistic about the earnings outlook, said Kevin Headland, director of the portfolio advisory group at Manulife Asset Management.
"We think the back half of the year is going to be much better, at least in terms of an earnings perspective," he added.
Oil prices slid after major oil producers failed to reach agreement on a plan to freeze output at a meeting in Doha, but a Kuwaiti oil industry strike helped the market to settle way above the day's lows.
U.S. crude prices settled at $39.78 a barrel, down 1.44 percent.
The Toronto Stock Exchange's S&P/TSX composite index closed up 82.62 points, or 0.61 percent, at 13,719.82. It touched its highest since Nov. 4 at 13,730.59.
The most influential movers in the index included Canadian Natural Resources Ltd, which rose 2.4 percent to C$37.57, and Enbridge Inc, which advanced 1.9 percent to C$52.97.
Suncor Energy, Canada's largest oil and gas company, said it would disclose more details on its plans to compete in a lower-carbon future and on its lobbying activities. Its shares rose 0.8 percent to C$36.22.
The overall energy group rose 1.2 percent.
The materials group, which includes precious and base metals miners and fertilizer companies, added 1.1 percent.
Teck Resources Ltd rose 12.8 percent to C$12.30, while Potash Corp was up 1.7 percent at C$21.44.
Nine of the index's 10 main groups ended higher.
The financials group edged 0.2 percent higher, including a 1.3 percent rise in the shares of Manulife Financial Corp to C$18.46.
Among the biggest drags on the index were CI Financial Corp , which declined 4.7 percent to C$27.68, and Detour Gold Corp, which fell 3.9 percent to C$24.78. (Additional reporting by Alastair Sharp; Editing by Nick Zieminski and Cynthia Osterman)