Two-and-one-half years in, how do we assess the success and stability of the Affordable Care Act’s health insurance marketplaces? Much ink has been spilled over the high-profile exit of UnitedHealthcare, but to gain a broader perspective, CHIR experts examined the first quarter earnings calls and regulatory filings for some of the largest, publicly traded insurers that participate in the marketplaces. Their latest article for the Commonwealth Fund shares what they learned.