If you're looking for policies to blame for insurance companies having a rough 2025-2026, look to the Republican-led efforts cap Medicare fees and alter eligibility requirements.
https://dqydj.com/sp-500-return-calculator/
https://dqydj.com/stock-return-calculator/
Since Jan 1, 2010, 18% for UNH, 15% for MOH/CNC, 14% for CI/ELV/HUM/SP500, 8.5% for CVS.
Also, these businesses are competing to sell a completely fungible commodity good with tons of non profits like Kaiser Permanente, HCSC, Cambia, Independence Blue Cross, and many others. It makes no sense to expect those businesses to be able to earn any decent profit margin when their competition only needs 0%.
CNC is up 90% YoY. That's far more than any of the largest tech companies. Alphabet is the highest of the tech stocks, and it's up 38% in the same period. When we look at the performance of the seven large U.S. publicly traded health insurers, their returns were extraordinary in the decade following the ACA.