French advertiser Publicis cut its 2015 sales forecast on Wednesday, warning that tougher conditions in the UK and Latin America may dampen the improvement seen in the first half.
Organic sales, which strip out currency effects, disposals and acquisitions, rose 1.4 percent in the second quarter after a 0.9 percent year-on-year gain in the first, Publicis said.
But the Paris-based company reduced its full-year agencies market growth forecast to 2.5 percent from 3 percent and said its own sales would remain "in line" with the trimmed outlook.
"We know that the third and fourth quarters will be better," said Chairman and CEO Maurice Levy. Publicis had in April pledged a 2015 sales gain in line with the 3 percent market growth it forecast at the time.
Improving trends in France, Germany and Italy will be partially offset by "slight downturns" in the UK and Latin American markets, particularly Brazil, the company predicted on Wednesday.
Net income rose 40 percent to 363 million euros ($396 million) in the six months ended June 30, broadly in line with analysts' expectations.
Including acquisitions and the favourable effects of a weaker euro, revenue jumped 35 percent to 4.542 billion.
Publicis is ahead of schedule with the integration of recently acquired U.S. digital advertising agency Sapient, Levy also said, adding that targeted cost savings from the deal had been raised to 60 million euros from 50 million.
"Most importantly it is fulfilling promises that exceed the strategic valuation of the company," the CEO said in a statement.