P3 Health Partners shares surge 22.64% after-hours after forming joint venture to expand value-based care platform in Arizona.

P3 Health Partners surged 22.64% in after-hours trading following the announcement of a joint venture with Commonwealth Primary Care ACO to establish a Management Services Organization (MSO), expanding its value-based care platform and entering Maricopa County, Arizona. The partnership, highlighted as a "very positive" Rhea-AI sentiment event, combines P3’s expertise in Medicare Advantage and delegated risk with Commonwealth’s ACO REACH program to create a unified operational platform for primary care providers across multiple states. The collaboration aims to enhance operational efficiency, support physician independence, and accelerate growth in key markets. This strategic expansion aligns with P3’s long-term objectives and signals strengthened market positioning, directly contributing to the sharp after-hours price increase.