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SEGMENT INFORMATION
 6 Months Ended
Jun. 30, 2026
Segment Reporting [Abstract]  
SEGMENT INFORMATION SEGMENT INFORMATION
The Company operates in and reports as a single reportable segment. The Company determined that the Chief Executive Officer is the chief operating decision maker (“CODM”) who regularly reviews financial information and other key performance indicators on a consolidated basis, for the purposes of allocating resources and evaluating financial performance. Factors used in determining the reportable segment include the nature of operating activities, the Company’s organizational and reporting structure, and the type of information presented to the Company’s CODM to allocate resources and evaluate financial performance. The accounting policies of the segment are the same as those described in “Note 2 - Summary of Significant Accounting Policies,” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025. The CODM reviews Net income (loss) attributable to Oscar Health, Inc. and Earnings (loss) from operations presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. These metrics serve as benchmarks to evaluate the business, measure performance, identify trends, prepare financial projections, and make strategic decisions. The CODM does not evaluate performance or allocate resources based on assets data.

The following table presents the revenue, significant expenses, and net income (loss) for the Company’s segment. As the Company operates and reports as a single segment, its measure of segment net income (loss) is the same as Net income (loss) attributable to Oscar Health, Inc. on the Condensed Consolidated Statements of Operations.

Three Months Ended June 30,Six Months Ended June 30,
(in thousands)
2026202520262025
Total revenue$4,880,220 $2,863,945 $9,527,414 $5,910,208 
Less:
Medical expenses
3,794,445 2,552,973 7,024,302 4,812,624 
Selling, general, and administrative (“SG&A”) expenses:
Member acquisition and servicing costs (1)
326,396 261,045 676,042 496,396 
Premium taxes, exchange fees, and other taxes and fees (2)
187,747 110,128 384,255 207,763 
All other SG&A (3)
176,937 163,312 337,017 313,085 
Total Selling, general, and administrative expenses691,080 534,485 1,397,314 1,017,244 
Depreciation and amortization6,060 6,970 13,078 13,700 
Earnings (loss) from operations388,635 (230,483)1,092,720 66,640 
Interest expense4,709 5,847 10,092 11,841 
Other expenses (income)915 (2,794)844 124 
Earnings (loss) before income taxes383,011 (233,536)1,081,784 54,675 
Income tax expense (benefit)21,183 (5,045)40,933 7,660 
Net income (loss) attributable to noncontrolling interests20 (130)47 105 
Net income (loss) attributable to Oscar Health, Inc.$361,808 $(228,361)$1,040,804 $46,910 
(1)Member acquisition and servicing costs include the Company’s expenses incurred to acquire, service, and fulfill obligations to members.
(2)Premium taxes, exchange fees, and other taxes and fees represent non-income tax charges from federal and state governments, including but not limited to healthcare exchange user fees and premium taxes.
(3)All other SG&A includes employee-related and administrative costs that are not member-based. Additionally, all other SG&A includes the net impact of quota share reinsurance accounted for under deposit accounting.

Significant Customers

The Company generates the majority of its total revenue from health insurance policy premiums, which primarily come from subsidies received from CMS as part of the Advanced Premium Tax Credit program.