Oscar Health, Inc.
US ˙ NYSE ˙ US6877931096

SecurityOSCR / Oscar Health, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership50,288 shares
Latest Disclosed Value $ 722,630
Sei Investments Co reports 42.50% increase in ownership of OSCR / Oscar Health, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 50,288 shares of Oscar Health, Inc. (US:OSCR) valued at $722,639 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 35,289 shares of Oscar Health, Inc.. This represents a change in shares of 42.50% during the quarter. The current value of the position is $1,030,904 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-13 2025-12-31 13F OSCAR HEALTH CL A 687793109 50,288 14,999 42.50 723 8.08 0.0007
2025-11-13 2025-09-30 13F OSCAR HEALTH CL A 687793109 35,289 -86,797 -71.09 668 -74.47 0.0007
2025-08-14 2025-06-30 13F OSCAR HEALTH CL A 687793109 122,086 46,744 62.04 2,618 165.15 0.0030
2025-05-14 2025-03-31 13F/A-1 OSCAR HEALTH CL A 687793109 75,342 -81,723 -52.03 988 -53.22 0.0013
2025-05-13 2025-03-31 13F OSCAR HEALTH CL A 687793109 156,896 -169 2,108 0.0023
2025-02-11 2024-12-31 13F OSCAR HEALTH CL A 687793109 157,065 122,752 357.74 2,111 190.23 0.0027
2024-11-12 2024-09-30 13F OSCAR HEALTH CL A 687793109 34,313 -120,697 -77.86 728 -70.35 0.0009
2024-08-13 2024-06-30 13F OSCAR HEALTH CL A 687793109 155,010 112,012 260.51 2,452 283.72 0.0035
2024-05-07 2024-03-31 13F OSCAR HEALTH CL A 687793109 42,998 21,497 99.98 639 226.02 0.0009
2024-02-14 2023-12-31 13F OSCAR HEALTH CL A 687793109 21,501 21,501 197 0.0003
2023-11-14 2023-09-30 13F OSCAR HEALTH CL A 687793109 0 -52,008 -100.00 0 -100.00
2023-08-11 2023-06-30 13F OSCAR HEALTH CL A 687793109 52,008 52,008 419 0.0007
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.