Under the terms of the transaction, Arbitron shareholders will receive $48 for each share of Arbitron stock they own. The transaction has a total approximate value of $1.26 billion. The investigation concerns whether the Arbitron Board of Directors breached their fiduciary duties to stockholders by failing to adequately shop the Company before entering into this transaction and whether Nielsen Holdings N.V. is underpaying for Arbitron shares, thus unlawfully harming Arbitron stockholders.