Nielsen NV on Tuesday reported first-quarter profit of $71 million.
Per-share earnings from the Oxfordshire, Britain, company were 20 cents per share, disappointing Wall Street.
Shares slid 5 percent in early trading.
The media and marketing information provider posted revenue of $1.53 billion in the period.
The company expects full-year earnings to be $1.40 to $1.46 per share.
Nielsen shares have fallen almost 1 percent since the beginning of the year, while the Standard & Poor's 500 index has risen 6 percent. The stock has declined 20 percent in the last 12 months.
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