As the annual Medicare Open Enrollment window opened for the 2027 plan year, the two largest private health insurers in the United States—Humana Inc. and UnitedHealth Group—confirmed plan terminations affecting nearly 1 million enrollees. Humana is dropping plans covering approximately 600,000 members (roughly 8% of its Medicare Advantage base), while UnitedHealthcare is discontinuing plans covering approximately 390,000 members. Rather than seeking growth at any price, managed care leaders are actively shedding unprofitable policyholders to protect their bottom lines from elevated medical costs.
For investors tracking managed care equities, this marks an important strategic pivot: the end of unconstrained enrollment expansion and the start of aggressive margin recovery.
The Math Behind the Medicare Advantage Plan Cuts
For over a decade, Medicare Advantage was the primary growth engine for health insurers. Lured by steady government capitation payments and statutory quality bonuses, insurers competed fiercely for market share, offering zero-dollar monthly premiums, rich dental packages, and flexible out-of-network Preferred Provider Organization (PPO) options. More than 33 million seniors enrolled in private Medicare plans nationwide.
However, that volume-first model cracked under dual pressures: sustained spikes in healthcare utilization and tighter reimbursement benchmarks from the Centers for Medicare & Medicaid Services (CMS). Inpatient hospital stays, orthopedic surgeries, and specialty pharmacy costs surged. At the same time, CMS phased in stricter risk-adjustment payment models that limited annual baseline payment updates.
When claims payouts rise faster than government payments, an insurer’s Medical Care Ratio (MCR)—also known as the Medical Loss Ratio (MLR)—expands rapidly. As analyzed in our earlier look at Medicare Advantage payment rates and insurer profit spreads, federal capitation formulas leave little room for unexpected cost surges. Every dollar paid in hospital claims directly reduces underwriting income. Humana and UnitedHealth determined that trimming unprofitable regional footprints is far safer for corporate balance sheets than absorbing continuous underwriting losses.
| Metric / Operational Indicator | UnitedHealth Group (UNH) | Humana Inc. (HUM) |
|---|---|---|
| Discontinued Enrollees (2027 Plan Year) | ~390,000 members | ~600,000 members (~8% of MA base) |
| Primary Cut Focus | Broad-network PPO plans | Underperforming plans rated ≤3.5 stars |
| Q3 2026 Medical Cost Ratio (MCR) | 88.4% | Managed for margin recovery |
| Q3 2026 Consolidated Revenue | $112.7 billion | Segment focus on CenterWell & MA |
| Full-Year 2026 Adjusted EPS Outlook | At least $20.50 per share | At least $9.00 per share |
How Humana Is Reshaping Its Portfolio
Humana has the highest concentration of Medicare Advantage exposure among major public health insurers. To protect earnings, management targeted what executive leadership termed the “lower tail” of profitability. The vast majority of Humana’s non-renewed offerings carried a CMS quality rating of 3.5 stars or lower. Under CMS payment rules, plans earning 4.0 stars or higher receive a statutory 5% quality bonus payment and retain a higher percentage of plan rebates, whereas lower-rated plans operate with razor-thin margins.
In its recent regulatory disclosure, Based on final 2027 Medicare Advantage (MA) Star Ratings data (Bonus Year 2028) provided by the Centers for Medicare and Medicaid Services (CMS) on October 8, 2026, Humana confirmed that it exceeded its goal of Top Quartile results, defined as Stars revenue per member per month 10% above the peer group median. By terminating sub-4-star plans and migrating members into higher-rated contracts, Humana aims to maximize rebate retention and reduce volatile hospital claim risk.
Historically, Humana retains about 40% of non-renewed members by transitioning them into alternative HMO or Special Needs Plans within the same service areas. That leaves approximately 360,000 individuals shopping for alternative coverage during the October 15 through December 7 open enrollment window.
Meanwhile, in a separate regulatory update, Humana affirms its guidance of at least $9.00 in adjusted earnings per common share (“Adjusted EPS”), for the year ending December 31, 2026. By paring back unprofitable contracts ahead of 2027, the company seeks to build a durable earnings floor.
UnitedHealth: Operational Scale and Benefit Redesign
As the nation’s largest insurer, UnitedHealth Group faces similar cost pressures but operates with broader diversification across pharmacy services (Optum Rx) and physician practices (Optum Health). Even so, UHC is eliminating Medicare Advantage plans for approximately 390,000 enrollees, focusing cuts primarily on higher-cost Preferred Provider Organization (PPO) policies.
PPO plans offer beneficiaries out-of-network doctor access, but make cost containment difficult for the insurer because contracted rate discounts and prior-authorization protocols are less restrictive. By steering enrollees toward Health Maintenance Organization (HMO) networks and chronic-condition Special Needs Plans (C-SNPs), UnitedHealth can manage care pathways through integrated clinics.
In its third-quarter financial release, building on trends noted in our coverage of UnitedHealth lifting its 2026 earnings outlook, UnitedHealth Group reported third quarter 2026 revenues of $112.7 billion and updated its full year 2026 adjusted earnings outlook to at least $20.50 per share. Crucially, UnitedHealth Group’s medical cost ratio was 88.4% for the third quarter 2026, reflecting both medical cost management and pricing discipline. The result demonstrated that early repricing efforts and targeted plan exits are already helping contain medical payout ratios.
Key Takeaways for Investors
- Margin Over Volume: Dropping nearly 1 million combined members confirms that managed care executives are prioritizing underwriting profitability over headline enrollment figures.
- Star Ratings Matter More Than Ever: CMS bonus benchmarks penalize plans rated below 4.0 stars. Insurers are concentrating capital exclusively in higher-rated, bonus-eligible plan structures.
- Network Contraction: Open PPO networks are receding in favor of tightly controlled HMO and value-based primary care networks that restrict out-of-network leakage.
- Earnings Floor Established: Both companies enter 2027 with affirmed or raised earnings outlooks ($9.00 adjusted EPS for Humana; $20.50 adjusted EPS for UNH), indicating management confidence that shedding underperforming contracts will stabilize cash flows.
Sources
- UnitedHealth Group Form 8-K Exhibit 99.1 Q3 2026 Financial Release (SEC EDGAR)
- Humana Inc. Form 8-K Regulation FD Disclosure & FY 2026 Earnings Guidance (SEC EDGAR)
- Humana Inc. Form 8-K Medicare Advantage Star Ratings Update (SEC EDGAR)
Disclosure: This article is for informational purposes only and is not investment advice.