Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Emdeon (NYSE: EM) popped 14% in intraday trading after Blackstone Group (NYSE: BX) announced it will acquire a controlling interest in the company to take it private.

So what: Private-equity investor Blackstone Group has agreed to buy Emdeon for $19 per share in cash. Emdeon's board unanimously approved the deal, worth about $3 billion, and is recommending stockholders do so as well.

Now what: General Atlantic and Hellman & Friedman, which own about 70% of shares outstanding, have agreed to vote in favor of the agreement. The deal is subject to the usual closing conditions, which include shareholder approval by Emdeon's stockholders and Hart-Scott-Rodino Act clearance. It is expected to close before year-end.


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