Shares of major insurers mixed in first day of trading after Aetna, Humana deal announced

In the first day of trading since Aetna announced a deal buy Humana last week, stocks of health care insurers were mixed Monday.

Aetna offered about $35 billion to buy rival Humana on Friday, a day when U.S. stock markets were closed in observance of Independence Day.

The proposed deal between Aetna and Humana follows others in the industry, as they respond to the Affordable Care Act. Also last week, Medicaid coverage provider Centene said it would spend $6.3 billion to buy Health Net. And last month, Anthem offered to buy Cigna for more than $47 billion.

Here's how the stocks of some health insurers fared in afternoon trading Monday:

— Aetna Inc. shares fell $7.05, or 5.6 percent, to $118.46.

— Anthem Inc. shares fell $1.14 to $162.

— Centene Corp. shares fell $ 2.14, or 2.9 percent, to $72.30.

— Cigna Corp. shares fell 71 cents to $160.58.

— Health Net Inc. shares fell $1.80, or 2.5 percent, to $69.77.

— Humana Inc. shares rose $5.49, or 2.9 percent, to $192.99.

— Molina Healthcare Inc. shares rose $ 1.08, or 1.6 percent, to $70.44.

— UnitedHealth Group Inc. shares rose 64 cents to $122.45.

— WellCare Health Plans Inc. shares rose $ 1.77, or 2.1 percent, to $88.19.