10 Largest Health Insurance Companies by Membership

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3. Aetna Inc (NYSE:AET)

Aetna Inc (NYSE:AET) stands in third place on the list of the largest health insurance companies by membership. The Connecticut-based healthcare giant has about 23 million members as of the end of March 2016. Aetna recently reported a quarterly loss of $381 million, thanks to the costs associated with the termination of its proposed $34 billion merger with Humana.  In January, a U.S district judge blocked the Aetna/Humana merger amid concerns that the companies would become too powerful as a single entity.

10 Largest Health Insurance Companies by Membership

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