Health Insurance and Managed Care

Introduction

Health insurance occupies a unique and sometimes ambiguous position in FIG investment banking. Unlike P&C insurance (which is squarely within FIG) or life insurance (also core FIG), health insurance and managed care organizations (MCOs) straddle the boundary between insurance and healthcare services. At some banks, managed care falls under the Healthcare investment banking group; at others, it sits within FIG; and at many, both groups share coverage, collaborating on transactions that touch both insurance and healthcare dynamics.

The managed care industry is enormous. UnitedHealth Group generated $400 billion in 2024 revenue with 44.8 million members. Elevance Health reported $177 billion, CVS/Aetna insured 24.9 million members, Cigna Group generated $247 billion, and Humana reported $118 billion. The six largest carriers insure approximately 52% of all Americans, and this concentration is projected to reach 56% by 2034.

Managed care companies collect premiums from employers, individuals, and government programs (Medicare, Medicaid) and pay for their members' healthcare. The core economic constraint is the Medical Loss Ratio (MLR): the ACA requires MCOs to spend at least 80% (individual and small group) or 85% (large group) of premium revenue on medical costs and quality improvement. This means the insurer can retain at most 15-20% of premiums for administrative costs and profit.

In 2024, actual MLRs ran significantly higher: approximately 85% in the individual market, 88% in fully insured group, 90% in Medicare Advantage, and 91% in Medicaid managed care. The Medicaid managed care MLR of 91% was the highest observed in the past decade, reflecting elevated utilization and cost trends.

Medical Loss Ratio (MLR)

The percentage of health insurance premiums spent on medical claims and quality improvement activities. The ACA mandates minimum MLRs of 80% for individual and small group plans and 85% for large group plans. If an insurer's MLR falls below these thresholds, it must issue rebates to policyholders. The MLR effectively caps the insurer's margin on the insurance product itself, which is why managed care companies have pursued vertical integration (acquiring healthcare services businesses where the margin constraint does not apply) and administrative efficiency to grow earnings. A higher MLR indicates more premium dollars going to medical care; a lower MLR indicates more retained by the insurer for administration and profit.

The most consequential strategic shift in managed care has been vertical integration: MCOs acquiring or building healthcare services businesses (pharmacy benefit managers, physician groups, home health, post-acute care, behavioral health) to capture more of the healthcare dollar within their own organizations.

UnitedHealth Group's Optum division now generates more revenue than the insurance segment (UnitedHealthcare). Optum encompasses OptumRx (pharmacy benefits), OptumHealth (physician practices, ambulatory care), and OptumInsight (health data analytics). CVS Health combined its Aetna insurance business with its retail pharmacy and Caremark PBM, creating an integrated healthcare platform. Cigna's Evernorth division houses its PBM (Express Scripts) and specialty pharmacy operations.

This integration creates both value and complexity. MCOs argue that integration improves care coordination and reduces costs. Critics and regulators argue that vertical integration allows insurers to channel excessive payments to affiliated entities, obscuring true costs and complicating MLR calculations.

Managed care M&A has produced some of the largest transactions in the broader healthcare and financial services landscape. CVS Health's $69 billion acquisition of Aetna (2018), Cigna's $67 billion merger with Express Scripts (2018), and UnitedHealth's serial acquisitions building Optum into a healthcare services giant all involved FIG advisory teams. Regulatory scrutiny is intense: the DOJ and FTC examine market concentration at both national and local levels, and state insurance regulators review the impact on premium affordability and network adequacy. For FIG bankers, managed care M&A advisory requires fluency in both insurance regulation and healthcare antitrust frameworks.