Who owns Oscar Health (OSCR)
Which tracked institutional funds hold OSCR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See OSCR company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on OSCR is one-sided between 2026-Q1 and 2026-Q2: 215 added or opened and 33 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
OSCR’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes OSCR more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in OSCR divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 379 tracked filers holding OSCR, 253 increased or opened the position and 168 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in OSCR between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 61
- RENAISSANCE TECHNOLOGIES LLC$94M
- WEDGE CAPITAL MANAGEMENT L L P/NC$33M
- HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$31M
- FEDERATED HERMES, INC.$26M
- Jump Financial, LLC$17M
- FORA Capital, LLC$12M
Full exits 25
- T. Rowe Price Investment Management, Inc.$134M
- Freestone Grove Partners LP$18M
- JUPITER ASSET MANAGEMENT LTD$15M
- SG Americas Securities, LLC$9M
- Defiance ETFs, LLC$9M
- Sessa Capital IM, L.P.$6M
Largest adds
- BlackRock, Inc.$389M
- D. E. Shaw & Co., Inc.$298M
- VANGUARD PORTFOLIO MANAGEMENT LLC$194M
- VANGUARD CAPITAL MANAGEMENT LLC$178M
- AMERICAN CENTURY COMPANIES INC$178M
- JANE STREET GROUP, LLC$148M
Largest trims
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$18M
- Point72 Asset Management, L.P.$13M
- Universal- Beteiligungs- und Servicegesellschaft mbH$3M
- ALLIANCEBERNSTEIN L.P.$2M
- OCCUDO QUANTITATIVE STRATEGIES LP$2M
- Fiduciary Alliance LLC$1M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 20,587,428 | $587M | 11.8% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 12,643,617 | $361M | 7.2% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 11,029,424 | $315M | 6.3% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 10,579,437 | $302M | 6.1% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 9,055,242 | $258M | 5.2% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 6,365,039 | $182M | 3.6% | 2026-Q2 |
| Thrive Capital Management, LLC | 6,343,617 | $181M | 3.6% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 5,819,186 | $166M | 3.3% | 2026-Q2 |
| STATE STREET CORP added | 5,801,351 | $165M | 3.3% | 2026-Q2 |
| FMR LLC added | 4,998,523 | $143M | 2.9% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 4,229,552 | $121M | 2.4% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 4,035,689 | $115M | 2.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 3,571,731 | $102M | 2.0% | 2026-Q2 |
| BIT Capital GmbH trimmed | 3,417,957 | $97M | 2.0% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 3,284,500 | $94M | 1.9% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 3,255,724 | $93M | 1.9% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 3,025,316 | $86M | 1.7% | 2026-Q2 |
| GLYNN CAPITAL MANAGEMENT LLC trimmed | 2,575,828 | $73M | 1.5% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 2,289,557 | $65M | 1.3% | 2026-Q2 |
| NORTHERN TRUST CORP added | 2,211,209 | $63M | 1.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 2,119,863 | $60M | 1.2% | 2026-Q2 |
| MORGAN STANLEY trimmed | 2,114,280 | $60M | 1.2% | 2026-Q2 |
| Nuveen, LLC added | 1,770,745 | $51M | 1.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 1,706,196 | $49M | 1.0% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 1,612,764 | $46M | 0.9% | 2026-Q2 |
| STATE OF MICHIGAN RETIREMENT SYSTEM | 1,450,000 | $41M | 0.8% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 1,318,173 | $38M | 0.8% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 1,247,992 | $36M | 0.7% | 2026-Q2 |
| UBS Group AG trimmed | 1,213,056 | $35M | 0.7% | 2026-Q2 |
| WEDGE CAPITAL MANAGEMENT L L P/NC new | 1,152,002 | $33M | 0.7% | 2026-Q2 |
| GROUP ONE TRADING LLC trimmed | 1,148,112 | $33M | 0.7% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 1,093,992 | $31M | 0.6% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 1,083,939 | $31M | 0.6% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL trimmed | 1,018,792 | $29M | 0.6% | 2026-Q2 |
| GILDER GAGNON HOWE & CO LLC trimmed | 1,001,982 | $29M | 0.6% | 2026-Q2 |
| FEDERATED HERMES, INC. added | 915,014 | $26M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 885,558 | $26M | 0.5% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 820,789 | $23M | 0.5% | 2026-Q2 |
| Walleye Capital LLC added | 814,974 | $23M | 0.5% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 799,762 | $23M | 0.5% | 2026-Q2 |
| Bank of New York Mellon Corp added | 772,515 | $22M | 0.4% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. added | 708,669 | $20M | 0.4% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 641,378 | $18M | 0.4% | 2026-Q2 |
| Halter Ferguson Financial Inc. added | 627,007 | $18M | 0.4% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 603,675 | $17M | 0.3% | 2026-Q2 |
| Jump Financial, LLC added | 601,019 | $17M | 0.3% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 598,147 | $17M | 0.3% | 2026-Q2 |
| Walleye Trading LLC trimmed | 559,356 | $16M | 0.3% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 558,954 | $16M | 0.3% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 534,409 | $15M | 0.3% | 2026-Q2 |
| CAPITAL FUND MANAGEMENT S.A. added | 519,191 | $15M | 0.3% | 2026-Q2 |
| PFM Health Sciences, LP added | 519,016 | $15M | 0.3% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 508,066 | $14M | 0.3% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 502,000 | $14M | 0.3% | 2026-Q2 |
| Eurizon Capital SGR S.p.A. added | 490,380 | $14M | 0.3% | 2026-Q2 |
| RPG Investment Advisory, LLC trimmed | 490,218 | $14M | 0.3% | 2026-Q2 |
| Alphabet Inc. | 481,988 | $14M | 0.3% | 2026-Q2 |
| Swiss National Bank added | 473,400 | $14M | 0.3% | 2026-Q2 |
| Invesco Ltd. added | 472,382 | $13M | 0.3% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 469,565 | $13M | 0.3% | 2026-Q2 |
| CREDIT AGRICOLE S A added | 460,003 | $13M | 0.3% | 2026-Q2 |
| RBF Capital, LLC | 449,604 | $13M | 0.3% | 2026-Q2 |
| Trexquant Investment LP trimmed | 444,399 | $13M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 429,180 | $12M | 0.2% | 2026-Q2 |
| IMC-Chicago, LLC trimmed | 422,040 | $12M | 0.2% | 2026-Q2 |
| FORA Capital, LLC added | 419,030 | $12M | 0.2% | 2026-Q2 |
| Empowered Funds, LLC trimmed | 405,462 | $12M | 0.2% | 2026-Q2 |
| PERCEPTIVE ADVISORS LLC new | 400,000 | $11M | 0.2% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 397,636 | $11M | 0.2% | 2026-Q2 |
| Rhenman & Partners Asset Management AB trimmed | 392,000 | $11M | 0.2% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC new | 378,679 | $11M | 0.2% | 2026-Q2 |
| ARDSLEY ADVISORY PARTNERS LP trimmed | 350,000 | $10M | 0.2% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 347,983 | $10M | 0.2% | 2026-Q2 |
| Jupiter Topco LLC new | 345,331 | $10M | 0.2% | 2026-Q2 |
| Fiduciary Alliance LLC trimmed | 343,696 | $10M | 0.2% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 343,370 | $10M | 0.2% | 2026-Q2 |
| BCS Private Wealth Management, Inc. trimmed | 338,885 | $10M | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 329,785 | $9M | 0.2% | 2026-Q2 |
| SIMPLEX TRADING, LLC trimmed | 325,509 | $9M | 0.2% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 321,396 | $9M | 0.2% | 2026-Q2 |
| SEB Asset Management AB trimmed | 318,565 | $9M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 314,955 | $9M | 0.2% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 308,632 | $9M | 0.2% | 2026-Q2 |
| TOWLE & CO added | 308,597 | $9M | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 300,267 | $9M | 0.2% | 2026-Q2 |
| Axxion S.A. new | 297,444 | $8M | 0.2% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 285,860 | $8M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 282,080 | $8M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 281,059 | $8M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 273,599 | $8M | 0.2% | 2026-Q2 |
| FRED ALGER MANAGEMENT, LLC trimmed | 272,696 | $8M | 0.2% | 2026-Q2 |
| TORONTO DOMINION BANK trimmed | 267,604 | $8M | 0.2% | 2026-Q2 |
| BANK OF MONTREAL /CAN/ trimmed | 261,650 | $7M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 257,674 | $7M | 0.1% | 2026-Q2 |
| General Equity Holdings LP | 240,000 | $7M | 0.1% | 2026-Q2 |
| TD Asset Management Inc added | 230,060 | $7M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 228,250 | $7M | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 224,646 | $6M | 0.1% | 2026-Q2 |
| Public Sector Pension Investment Board new | 214,600 | $6M | 0.1% | 2026-Q2 |
| Bridgewater Associates, LP new | 213,704 | $6M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.