An Elliott Management Corp. and Brookfield Asset Management Inc. led consortium agreed to acquire Nielsen Holdings PLC. for $28 a share.
The all-cash transaction valued Nielsen at $16 billion, including debt.
The offer price implied a 60 percent premium over Nielsen's unaffected stock price as of March 11, before market speculation regarding a potential takeover.
Nielsen shares closed at $22.21 on March 28.
Nielsen recently dumped a takeover offer of $25.40 per share from a private equity consortium valuing Nielsen at $9 billion.
Nielsen aborted share buybacks previously approved by the board.