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What: Shares of Emdeon (NYSE: EM) plunged 10% today on high volume, after it reported third-quarter earnings results.

So what: The health-care payment company swung to a gain on cost-cutting, earning $0.04 per share on $246 million in revenue. The company's services compete with McKesson's (NYSE: MCK) RelayHealth and UnitedHealth Group's (NYSE: UNH) Igenix and OptumHealth.

Now what: Emdeon's results were nearly identical to what analysts had expected. While the company predicted 2010 earnings would come in on the low end of guidance ($0.90 to $0.94 on $1 billion in revenue), this is in line with what analysts were expecting anyway.

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Ilan Moscovitz doesn't own shares of any company mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.