By Laharee Chatterjee
Restaurant Brands said comparable sales at Burger King rose 1.8 percent in the second quarter, compared with a 3.9 percent increase a year earlier.
Like other fast-food chains, the Whopper burger maker has struggled to attract customers in a slowing U.S. market, which is also its biggest.
Larger rival McDonald's Corp missed quarterly U.S. same-store sales estimates for the first time in at least two years.
In contrast, same-store sales at Restaurant Brands' coffee chain, Tim Hortons, stabilized in the latest quarter as it overhauled stores and introduced new menu items, including "Breakfast Anytime".
Same-store sales at Tim Hortons were flat, compared with a 0.8 percent dip a year earlier.
"We were also encouraged to see stable results at Tim Hortons and the launch of all-day breakfast, which we believe will drive incremental traffic gains," Stephens Inc analyst Will Slabaugh said.
Tim Hortons is looking to tap a growing cafe culture in China and said in July that it would open 1,500 coffee-and-donut outlets in the country.
The move is part of a strategy by Tim Hortons' new president, Alex Macedo, who is trying to cope with mounting competition in the industry.
Net income attributable to shareholders rose to $169.1 million, or 67 cents per share, in the three months ended June 30 from $89.5 million, or 37 cents per share, a year earlier.
On an adjusted basis, the company earned 66 cents per share, beating analysts' average estimates of 63 cents, according to Thomson Reuters I/B/E/S.
Revenue was $1.14 billion, missing estimates of $1.37 billion.
Restaurant Brands shares were down 1.8 percent at $80.99 on the Toronto Stock Exchange.
(Reporting by Nivedita Bhattacharjee and Laharee Chatterjee in Bengaluru; Editing by Anil D'Silva)
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)