The Federal Trade Commission has completed its 30-day review of the Microsoft aQuantive acquisition and raised no red flags. In a regulatory filing today, Seattle-based digital advertising company aQuantive said requirements under the Hart-Scott-Rodino Antitrust Improvements Act "have been satisfied."

In a statement, Microsoft indicated that the acquisition is on track to be completed this year.

"We're pleased that the FTC's automatic 30-day review period has concluded without a second request for information and look forward to finalizing this transaction by the end of the year, if not considerably sooner," said Microsoft spokesman Guy Esnouf.

On May 18, Microsoft announced plans to buy aQuantive for $6 billion, about an 85 percent premium to the company's market value the day before.

Shareholders in aQuantive will vote on the deal at a special meeting Aug. 9.