(Adds portfolio manager comment, updates prices to close)
* TSX ends up 21.02 points, or 0.14 percent, at 14,796.06
* Seven of the TSX's 10 main groups move higher
By Alastair Sharp
TORONTO, Aug 11 (Reuters) - Canada's main stock index rose on Thursday as energy stocks gained from a bounce in oil prices, while drug maker Valeant Pharmaceuticals International Inc slumped on a report it is the target of a criminal probe.
The energy group rose 1.2 percent, leading gains after the broader index broke a five-day winning streak on Wednesday.
The Toronto Stock Exchange's S&P/TSX composite index ended up 21.02 points, or 0.14 percent, at 14,796.06. The index at one point hit a 13-month intraday high of 14,855.69.
"The Canadian market this year is I think overextended," said Barry Schwartz, portfolio manager at Baskin Financial Services. "It is a little bit of a silly rally."
Oil prices jumped the most in a month after the Saudi oil minister spoke about possible action to stabilize prices and the International Energy Agency predicted supply should tighten in the coming months after several years of overproduction.
Canadian Natural Resources Ltd added 1.3 percent to C$41.35, pipeline operator Enbridge Inc advanced 1.1 percent to C$54.44, and Encana Corp rose 5.6 percent to C$11.88.
Schwartz said he has avoided energy stocks - a major force on the Canadian index - so far this year given a lack of certainty on future prices, and that he expects commodity stocks to snap back from recent gains.
"I wouldn't be surprised to see some of the commodities be the worst performers in the second half of the year," he said.
The most influential drag on the index was Valeant, which fell 11.2 percent to C$31.76. The Wall Street Journal reported the drugmaker is the subject of a criminal probe over whether it hid from insurers its relationship with a specialty pharmacy.
Valeant stock had surged 25 percent earlier this week after it unveiled a plan to raise billions from asset sales.
Seven of the index's 10 main sectors ended higher, with healthcare and technology groups down. Decliners barely outnumbered advancers overall.
The materials group, which includes precious and base metals miners and fertilizer companies, lost 0.5 percent.
The heavyweight financials group was flat, torn between gains for its biggest banks and losses among insurers and some real estate investment trusts.
Industrials rose 0.4 percent, with Canadian National Railway Co up 0.7 percent to C$82.47. (Editing by Jeffrey Benkoe and Jeffrey Hodgson)