In this photo, traders work under monitors displaying CVS Health Corp. signage on the floor of the New York Stock Exchange (NYSE) in New York, U.S., on Friday, Oct. 27, 2017. CVS is the parent of Aetna, the nations third largest health insurance company. Photographer: Michael Nagle/Bloomberg
© 2017 Bloomberg Finance LP
Following a parade of health insurance company earnings reports this summer, stocks are rising and costs appear to be under control for now.
Take UnitedHealth Group, parent of the nation‘s largest health insurer in UnitedHealthcare, reported more than $5 billion in second quarter net income. That came during a period this year when UnitedHealthcare’s medical care ratio continued to fall.
“The second quarter 2026 medical care ratio was 86.7% compared to 89.4% in the second quarter 2025,” the company said of the ratio, which is the percentage of premium revenue that goes toward medical costs. “The year-over-year decrease was driven by benefit design and pricing discipline, member mix and medical cost management initiatives.”
The price of UnitedHealth shares have been flirting with $400 this week, which is up more than 30% compared to a year ago. The price of shares of CVS Health, too, which owns the giant health insurer Aetna, are up more than 30% since last summer.
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CVS is like UnitedHealth in that its assets are diversified to include pharmacy benefit management and healthcare providers. It wasnt long ago that analysts on Wall Street were speculating the vertical integration strategy of CVS and UnitedHealth would soon be a thing of the past but neither company has shown signs of diverging from the strategy of owning both medical care providers and health insurance operations that pay for care.
Meanwhile, shares of other health insurers, including those like Centene and Humana, are also up significantly.
The price of Centene shares has more than doubled in the last year, hovering around $65 a share this week. It was near $30 a share last week. Meanwhile, the price of Humana stock is more than $380 a share this week, which is more than double what it was five months ago.
The performance of Centene, which reported net income of more than $1 billion in the second quarter, and Humana has been particularly important to the health insurance sector because they have a lot of government-subsidized health insurance products and tend to cover sicker patients.
But the improving cost picture for health insurers isnt without pain for those who are covered by these plans.
Most of these companies have already exited unprofitable markets or areas of the country where they say they dont have adequate doctor and hospital networks to provide low cost benefits. When they exit markets, health plan enrollees have to pick a different plan during the fall open enrollment period and could potentially lose access to their physician or hospital.
During Humanas second quarter earnings call, executives said they once again will have “targeted plan exits” for the 2027 health benefit year. Though other companies have yet to confirm exits, they are expected given the industry struggle with costs.
“Our expected margin expansion in 2027 will benefit from our ongoing clinical excellence and operating efficiency work as well as benefit adjustments and targeted plan exits,” Humana chief financial officer Celeste Mellet said a month ago during the companys second quarter earnings call. “For 2027, we anticipate these plan exits will impact approximately 600,000 members, though we will work to recapture a significant portion of that volume as we did in 2025.”
But not all health insurers are exiting markets theyve been in. Oscar Health, for example, which sells individual coverage under the Affordable Care Act, also known as Obamacare, entered new markets this year and has been performing well.