(Updates at market close)

By Sudeshna Ghoshal and Fergal Smith

TORONTO, Aug 6 (Reuters) - Canada's main stock index edged

lower on Thursday as investors weighed corporate earnings and

geopolitical uncertainty, with technology and consumer

discretionary shares among the biggest decliners.

The Toronto Stock Exchange's S&P/TSX Composite index

ended down 10.11 points at 36,136.31, after posting a

record closing high on Wednesday.

* The U.S. benchmark S&P 500 also closed lower, pausing

after a strong start to the week, as investors digested the

latest round of corporate earnings and looked for signs of

progress toward a peace deal between the U.S. and Iran.

* "Earnings are very important, but the macro landscape is

also pushing things along while adding to the uncertainty," said

Corbin Footitt, portfolio manager at Verecan Capital Management

Inc.

* The technology sector fell 1.5%, with shares of

Celestica ( CLS ) down nearly 13% after the data center

infrastructure firm announced the pricing of an equity offering.

* Consumer discretionary lost 1.8% and

industrials ended 0.7% lower.

* Shares of ATS Corporation tumbled nearly 27% after the

automation solutions provider's quarterly results missed

estimates.

* Restaurant Brands International beat overall

same-store sales growth expectations for the second quarter,

helped by resilient demand at its Burger King chain in the U.S.

Still, its shares were down 1.9%.

* Just two of the 10 major sectors notched gains, including

the materials group. It added 0.5%, while energy

ended 0.6% higher.

* The price of oil settled up 2.75% at $77.29 a

barrel on news an Iranian parliament committee is reviewing a

bill that would ban U.S. and Israeli vessels from the Strait of

Hormuz.

* Shares of Canadian Natural Resources ( CNQ ) rose 1.6%

after the company beat second-quarter profit estimates on higher

oil and natural gas production.