(Updates with analyst comment, market open prices)

By Nikhil Sharma

Aug 28 (Reuters) - Canada's main stock index gave up

early gains to trade lower on Thursday, despite strong results

from TD Bank and CIBC, as investors took profits after the

market's recent run-up.

At 10:10 a.m. ET (1410 GMT), the S&P/TSX composite index

was down 0.18% at 28,380.76 points, coming off a

record high posted earlier in the day.

The energy sector lost 0.6%, while consumer

discretionary shares led the sectoral losses with a

0.7% fall.

Allan Small, senior investment advisor at Allan Small

Financial Group with iA Private Wealth, attributed the moves to

seasonality as investors head into September, the weakest month

for markets, while indexes sit near all-time highs.

"Maybe a pullback or maybe we'll take some profits at this

point in time."

The index has posted two record closing highs this week.

Canadian lenders TD Bank and CIBC wrapped up

the earnings season for top domestic lenders with a rise in

their third-quarter profits. Shares of CIBC were up 1.4%, while

TD Bank lost 3.5%.

Both financial firms continued the broader trend of

lower-than-expected provisions for bad loans, as some pressure

from U.S.-Canada trade tensions eased.

Royal Bank of Canada ( RY ), Bank of Montreal ( BNKD ) and

Bank of Nova Scotia ( BNS ) posted blockbuster earnings earlier

this week, which helped lift the main index.

The banks have also delivered significant growth in their

wealth-management divisions - a key focus for these heavyweight

lenders - as they diversified from interest income tied to

shifting rates and credit risk.

Nvidia's shares were

down

1.7% as uncertainty over its China businesses clouded a

better-than-expected revenue forecast for the next quarter.

Guardian Capital Group ( GRCGF ) climbed about 63% after the

company agreed to be taken private by Desjardins Global Asset

Management in a C$1.67 billion ($1.21 billion) all-cash deal.