FILE PHOTO: The Art Deco facade of the original Toronto Stock Exchange building is seen on Bay Street in Toronto, Ontario, Canada January 23, 2019. REUTERS/Chris Helgren/File Photo

By Nikhil Sharma

(Reuters) -Canada's main stock index inched lower on Monday as investors avoided big bets ahead of domestic inflation data due on Tuesday and a key U.S. central bank conference starting on Friday.

At 9:55 a.m. ET (1355 GMT), the Toronto Stock Exchange's S&P/TSX composite index was down 0.17% at 27,858.27 points. [.TO]

The U.S. Federal Reserve's annual economic policy symposium in Jackson Hole, Wyoming, starts on Friday, which investors will watch for clues on monetary policy.

"There are a lot of expectations that the Fed coming out of this meeting will end up taking a more supportive approach," said Shiraz Ahmed, founder & CEO of Sartorial Wealth Inc.

"A lot of investors are just in a wait-and-see pattern at the moment."

According to the CME Group's FedWatch tool, traders are pricing in an 85.1% likelihood for a September interest rate cut.

Investors will also watch out for Tuesday's Canadian inflation data for July. A Reuters poll of economists expects the annual rate to have slowed to 1.8% last month.

Any decline in the domestic inflation rate could prompt the Bank of Canada to slash rates. The central bank at its last policy meeting suggested it will cut if the economy weakens and inflation stays contained.

Later in the day, U.S. President Donald Trump will meet Ukrainian President Volodymyr Zelenskiy and European leaders after Trump's dialogue with Russian President Vladimir Putin on Friday failed to produce a peace agreement.

TSX's energy index led losses on Monday, down 0.8%, hurt by lower crude prices ahead of the Trump-Zelenskiy meeting. Materials lost 0.6%.

Capped communications and consumer staples capped overall losses, gaining 0.9% and 0.5%, respectively.

Air Canada fell 2.6% after suspending third-quarter and annual profit forecasts as its planes remained grounded after striking flight attendants defied a return-to-work order.

(Reporting by Nikhil Sharma; Editing by Sahal Muhammed)