As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of Oscar Health, Inc. The largest reported stake is Thrive Capital Partners III, L.P.'s, at 12.1%. 7 filings are on record since July 17, 2025 (Schedule 13D/A, September 18, 2026).
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Key facts
- · Holder: Thrive Capital Partners III, L.P. · Percent: 12.1% · Shares: 17,535,258 · SCHEDULE 13D/A
- · Reporting person: The Vanguard Group · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-03-27
- · Reporting person: Marc Stad · Sole voting: 0 · Shared voting: 657,435 · Sole dispositive: 0 · Shared dispositive: 657,435 · SCHEDULE 13G/A, 2026-02-17
- · Reporting person: T. Rowe Price Investment Management, Inc. · Sole voting: 8,297,290 · Shared voting: 0 · Sole dispositive: 8,322,004 · Shared dispositive: 0 · SCHEDULE 13G/A, 2025-11-14
- · Holder: Deerfield Mgmt, L.P. · Percent: 0% · SCHEDULE 13G/A
Oscar Health, Inc. has 7 Schedule 13D or 13G filings on record since 2025-07-17. 2 holders' latest filing reports 5% or more of class a common stock, $0.00001 par value per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Thrive Capital Partners III, L.P. | 12.1% | 17,535,258 | SCHEDULE 13D/A, 2026-09-18 | 2026-09-18 |
| BlackRock, Inc. | 6.4% | 13,941,711 | SCHEDULE 13G/A, 2025-07-17 | 2025-06-30 |
| Jpmorgan Chase & Co. | 4.5% | 9,950,789 | SCHEDULE 13G/A, 2025-07-31 | 2025-06-30 |
| T. Rowe Price Investment Management, Inc. | 3.7% | 8,322,004 | SCHEDULE 13G/A, 2025-11-14 | 2025-09-30 |
| 0.3% | 657,435 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 | |
| Deerfield Mgmt, L.P. | 0% | 0 | SCHEDULE 13G/A, 2025-11-13 | 2025-09-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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Keep reading
More on Oscar Health, Inc. and the records around it.
Oscar Health, Inc. elsewhere on the record
Companies that share a holder
- Marc Stad also filed stake reports on 3 other companies: Inspire Medical Systems, Inc. (Nov 2025)
- Deerfield Mgmt, L.P. also filed stake reports on 19 other companies: Climb Bio, Inc. (Oct 2026), Cogent Biosciences, Inc. (Aug 2026), Enhabit, Inc. (Aug 2026)
- JPMORGAN CHASE & CO. also filed stake reports on 116 other companies: LEVI STRAUSS & CO (Nov 2026), Warner Music Group Corp. (Nov 2026), Andersen Group Inc. (Oct 2026)
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What the Full Report on Oscar Health, Inc. covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Thrive Capital Partners II, L.P. | 4,779,730 | 0 | 4,779,730 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Partners II GP, LLC | 4,779,730 | 0 | 4,779,730 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Capital Partners III, L.P. | 17,535,258 | 0 | 17,535,258 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Claremount TW, L.P. | 593,021 | 0 | 593,021 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Partners III GP, LLC | 18,128,279 | 0 | 18,128,279 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Capital Partners V, L.P. | 1,040,704 | 0 | 1,040,704 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Claremount V Associates, L.P. | 19,239 | 0 | 19,239 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Partners V GP, LLC | 1,059,943 | 0 | 1,059,943 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Capital Partners VI Growth, L.P. | 2,498,513 | 0 | 2,498,513 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Claremount VI Associates, L.P. | 48,982 | 0 | 48,982 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Partners VI GP, LLC | 2,547,495 | 0 | 2,547,495 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Capital Partners VII Growth, L.P. | 10,424,005 | 0 | 10,424,005 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Partners VII Growth GP, LLC | 10,424,005 | 0 | 10,424,005 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Claremount VII Associates, L.P. | 125,632 | 0 | 125,632 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Thrive Partners VII GP, LLC | 125,632 | 0 | 125,632 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| Joshua Kushner | 37,525,451 | 0 | 37,525,451 | 0 | SCHEDULE 13D/A, 2026-09-18 |
| T. Rowe Price Investment Management, Inc. | 8,297,290 | 0 | 8,322,004 | 0 | SCHEDULE 13G/A, 2025-11-14 |
| Marc Stad | 0 | 657,435 | 0 | 657,435 | SCHEDULE 13G/A, 2026-02-17 |
| Dragoneer Investment Group, LLC | 0 | 657,435 | 0 | 657,435 | SCHEDULE 13G/A, 2026-02-17 |
| The Vanguard Group | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-03-27 |
The latest filing identifies Oscar Health, Inc. by CUSIP 687793109 and gives its principal executive office as 75 VARICK STREET, 5TH FLOOR, NEW YORK, NY 10013 (SCHEDULE 13D/A, 2026-09-18).
What the percentages are based on
0.3%.The number of shares outstanding for purposes of the percentage calculation in Item 11 is based on 229,010,000 shares of Class A Common Stock outstanding as of October 31, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2025, filed with the SEC on November 6, 2025.Marc Stad, SCHEDULE 13G/A, 2026-02-17
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-17 | BlackRock, Inc. | 6.4% | SCHEDULE 13G/A |
| 2025-07-31 | Jpmorgan Chase & Co. | 4.5% | SCHEDULE 13G/A |
| 2025-11-13 | Deerfield Mgmt, L.P. | 0% | SCHEDULE 13G/A |
| 2025-11-14 | T. Rowe Price Investment Management, Inc. | 3.7% | SCHEDULE 13G/A |
| 2026-02-17 | Marc Stad | 0.3% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-09-18 | Thrive Capital Partners III, L.P. | 12.1% | SCHEDULE 13D/A |
Questions about who owns Oscar Health, Inc.
Who owns Oscar Health, Inc.?
On this page, 2 holders' latest ownership filings report 5% or more of Oscar Health, Inc.: Thrive Capital Partners III, L.P. (12.1%, Schedule 13D/A, filed 2026-09-18) and BlackRock, Inc. (6.4%, Schedule 13G/A, filed 2025-07-17).
Who are the largest shareholders of Oscar Health, Inc.?
By the share each holder's latest filing reports, the largest holders of Oscar Health, Inc. on this page are Thrive Capital Partners III, L.P. (12.1%) and BlackRock, Inc. (6.4%).
When did Thrive Capital Partners III, L.P. buy into Oscar Health, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Thrive Capital Partners III, L.P. on this page is the Schedule 13D/A, filed 2026-09-18, reporting 12.1%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 7 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Oscar Health, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| June 2, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.