Billionaire entrepreneur Mark Cuban isn't backing down from his fight with Big Insurance. Over the weekend, Cuban took to X to fire another salvo at major insurance companies, accusing them of systematically pushing financial risk onto the shoulders of independent physicians, pharmacists, and patients who simply don't have the resources to push back.
This time, Cuban went further than usual. He called out Berkshire Hathaway Inc. (BRK.B), the massive conglomerate previously helmed by legendary investor Warren Buffett, urging the company to rethink its healthcare insurance portfolio. Cuban's theory? If enough investors start pulling their money out of insurance stocks and redirect their IRAs and retirement savings elsewhere, it could actually force real change across the industry.
"I hate to say this because I love Warren Buffett (I know he retired), but Berkshire Hathaway needs to reconsider their healthcare insurance investments," Cuban wrote.
He also floated the idea that market forces might eventually compel these insurance giants to divest their problematic assets if the Department of Justice doesn't step in first.
The Buffett Insurance Philosophy
Cuban's timing is interesting. The insurance sector is getting hammered from multiple directions right now. Just last month, the Trump administration proposed lower-than-expected Medicare insurer rates, which sent stock prices tumbling for major players like UnitedHealth Group Inc. (UNH), Humana Inc. (HUM), and CVS Health Corp. (CVS).
But here's the thing: Warren Buffett has spent decades praising insurance as the secret sauce behind Berkshire's extraordinary success. The numbers back him up. Berkshire's insurance float ballooned from a modest $39 million in 1970 to an eye-popping $91.6 billion by 2016. That massive pool of capital gave Buffett the firepower to make the acquisitions and investments that transformed Berkshire into the behemoth it is today.
The company continues to make serious bets in the insurance space, including a substantial stake in Chubb Ltd. (CB), which has delivered solid returns. The stock climbed 13.01% over the past year alone.
For Cuban, though, this isn't just about one company or one stock. The Shark Tank personality has been beating this drum for a while now. He's previously argued that major pharmacy benefit managers (PBMs), which are owned by the big insurers, have grown so large that they have zero incentive to change. According to Cuban, these entities profit by charging every single player in the healthcare ecosystem, creating a bloated, inefficient system where no one has any real motivation to control costs.
Whether Cuban's investor revolt strategy will gain traction remains to be seen. But one thing is clear: the insurance industry is facing more public scrutiny and political pressure than it has in years, and vocal critics like Cuban aren't letting up.
