Who owns Scholar Rock Holding (SRRK)
Which tracked institutional funds hold SRRK, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See SRRK 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
111 tracked funds added or opened SRRK while 48 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
SRRK’s largest tracked holder by dollar value, FMR LLC, 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 conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in SRRK 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 294 tracked filers holding SRRK, 177 increased or opened the position and 122 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 SRRK 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 15
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/$143M
- Jupiter Topco LLC$123M
- Qube Research & Technologies Ltd$26M
- Senator Investment Group LP$11M
- Logos Global Management LP$11M
- SEGALL BRYANT & HAMILL, LLC$10M
Full exits 16
- JANUS HENDERSON GROUP PLC$110M
- Vestal Point Capital, LP$65M
- Paradigm Biocapital Advisors LP$60M
- JANE STREET GROUP, LLC$28M
- ADAR1 Capital Management, LLC$20M
- SILVERARC CAPITAL MANAGEMENT, LLC$17M
Largest adds
- BlackRock, Inc.$337M
- FMR LLC$151M
- Orbis Allan Gray Ltd$121M
- NORGES BANK$100M
- MORGAN STANLEY$74M
- VANGUARD CAPITAL MANAGEMENT LLC$71M
Largest trims
- Redmile Group, LLC$209M
- Bellevue Group AG$41M
- STEMPOINT CAPITAL LP$38M
- JENNISON ASSOCIATES LLC$34M
- MARSHALL WACE, LLP$28M
- CITADEL ADVISORS LLC$26M
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 |
|---|---|---|---|---|
| FMR LLC added | 17,995,241 | $990M | 13.2% | 2026-Q2 |
| Siren, L.L.C. trimmed | 9,575,013 | $527M | 7.0% | 2026-Q2 |
| BlackRock, Inc. added | 9,494,084 | $522M | 7.0% | 2026-Q2 |
| SAMSARA BIOCAPITAL, LLC | 6,897,652 | $379M | 5.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 6,794,837 | $374M | 5.0% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 6,727,085 | $370M | 4.9% | 2026-Q2 |
| Orbis Allan Gray Ltd added | 5,933,533 | $326M | 4.4% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 4,767,880 | $262M | 3.5% | 2026-Q2 |
| STATE STREET CORP added | 4,728,681 | $260M | 3.5% | 2026-Q2 |
| Redmile Group, LLC trimmed | 4,311,092 | $237M | 3.2% | 2026-Q2 |
| NORGES BANK added | 2,769,910 | $152M | 2.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,753,787 | $151M | 2.0% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ new | 2,607,348 | $143M | 1.9% | 2026-Q2 |
| Bellevue Group AG trimmed | 2,449,547 | $135M | 1.8% | 2026-Q2 |
| JENNISON ASSOCIATES LLC trimmed | 2,358,587 | $130M | 1.7% | 2026-Q2 |
| Jupiter Topco LLC new | 2,242,106 | $123M | 1.6% | 2026-Q2 |
| Hood River Capital Management LLC added | 2,224,788 | $122M | 1.6% | 2026-Q2 |
| Driehaus Capital Management LLC added | 2,205,618 | $121M | 1.6% | 2026-Q2 |
| EVENTIDE ASSET MANAGEMENT, LLC trimmed | 2,111,410 | $116M | 1.6% | 2026-Q2 |
| Polar Capital Holdings Plc trimmed | 1,878,580 | $103M | 1.4% | 2026-Q2 |
| Holocene Advisors, LP trimmed | 1,755,978 | $97M | 1.3% | 2026-Q2 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 1,731,402 | $95M | 1.3% | 2026-Q2 |
| MORGAN STANLEY added | 1,538,776 | $85M | 1.1% | 2026-Q2 |
| Woodline Partners LP | 1,500,470 | $83M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,411,477 | $78M | 1.0% | 2026-Q2 |
| Capital World Investors added | 1,160,409 | $64M | 0.9% | 2026-Q2 |
| Clearbridge Investments, LLC added | 1,059,776 | $58M | 0.8% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 1,027,357 | $57M | 0.8% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 979,845 | $54M | 0.7% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 975,197 | $54M | 0.7% | 2026-Q2 |
| NORTHERN TRUST CORP added | 974,576 | $54M | 0.7% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 972,257 | $53M | 0.7% | 2026-Q2 |
| Pictet Asset Management Holding SA added | 911,075 | $50M | 0.7% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 890,607 | $49M | 0.7% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 878,726 | $48M | 0.6% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 864,286 | $48M | 0.6% | 2026-Q2 |
| Integral Health Asset Management, LLC added | 750,000 | $41M | 0.6% | 2026-Q2 |
| FEDERATED HERMES, INC. trimmed | 734,513 | $40M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 730,083 | $40M | 0.5% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 717,512 | $39M | 0.5% | 2026-Q2 |
| Rock Springs Capital Management LP trimmed | 715,452 | $39M | 0.5% | 2026-Q2 |
| Casdin Capital, LLC added | 665,000 | $37M | 0.5% | 2026-Q2 |
| Nuveen, LLC added | 651,749 | $36M | 0.5% | 2026-Q2 |
| LOOMIS SAYLES & CO L P trimmed | 596,055 | $33M | 0.4% | 2026-Q2 |
| Ensign Peak Advisors, Inc trimmed | 579,052 | $32M | 0.4% | 2026-Q2 |
| Eagle Health Investments LP added | 555,272 | $31M | 0.4% | 2026-Q2 |
| UBS Group AG trimmed | 511,170 | $28M | 0.4% | 2026-Q2 |
| Qube Research & Technologies Ltd new | 463,730 | $26M | 0.3% | 2026-Q2 |
| Fisher Asset Management, LLC trimmed | 439,447 | $24M | 0.3% | 2026-Q2 |
| MARSHALL WACE, LLP trimmed | 430,500 | $24M | 0.3% | 2026-Q2 |
| Bank of New York Mellon Corp added | 365,218 | $20M | 0.3% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 331,851 | $18M | 0.2% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 303,268 | $17M | 0.2% | 2026-Q2 |
| Squarepoint Ops LLC added | 291,996 | $16M | 0.2% | 2026-Q2 |
| NAN FUNG TRINITY (HK) LTD | 285,495 | $16M | 0.2% | 2026-Q2 |
| ARMISTICE CAPITAL, LLC trimmed | 278,000 | $15M | 0.2% | 2026-Q2 |
| Trexquant Investment LP added | 275,712 | $15M | 0.2% | 2026-Q2 |
| First Turn Management, LLC trimmed | 271,227 | $15M | 0.2% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 247,521 | $14M | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 245,027 | $13M | 0.2% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 240,665 | $13M | 0.2% | 2026-Q2 |
| STEMPOINT CAPITAL LP trimmed | 239,146 | $13M | 0.2% | 2026-Q2 |
| Candriam S.C.A. trimmed | 216,146 | $12M | 0.2% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 209,991 | $12M | 0.2% | 2026-Q2 |
| Senator Investment Group LP new | 205,000 | $11M | 0.2% | 2026-Q2 |
| Logos Global Management LP added | 200,000 | $11M | 0.1% | 2026-Q2 |
| Susquehanna Portfolio Strategies, LLC added | 199,052 | $11M | 0.1% | 2026-Q2 |
| SEGALL BRYANT & HAMILL, LLC new | 188,588 | $10M | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 177,692 | $10M | 0.1% | 2026-Q2 |
| SEI INVESTMENTS CO added | 173,623 | $10M | 0.1% | 2026-Q2 |
| Granahan Investment Management, LLC added | 163,759 | $9M | 0.1% | 2026-Q2 |
| Swiss National Bank added | 149,800 | $8M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 145,460 | $8M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 139,820 | $7M | 0.1% | 2026-Q2 |
| PEREGRINE CAPITAL MANAGEMENT LLC trimmed | 139,534 | $8M | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 133,482 | $7M | 0.1% | 2026-Q2 |
| GordonMD Global Investments LP | 132,500 | $7M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 130,514 | $7M | 0.1% | 2026-Q2 |
| MGO ONE SEVEN LLC new | 125,077 | $7M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 122,223 | $7M | 0.1% | 2026-Q2 |
| TD Asset Management Inc trimmed | 120,364 | $7M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 115,011 | $6M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 113,031 | $6M | 0.1% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 111,186 | $6M | 0.1% | 2026-Q2 |
| EFG International AG trimmed | 110,634 | $6M | 0.1% | 2026-Q2 |
| Man Group plc added | 104,346 | $6M | 0.1% | 2026-Q2 |
| Ghisallo Capital Management LLC new | 100,000 | $6M | 0.1% | 2026-Q2 |
| Artia Global Partners LP | 96,285 | $5M | 0.1% | 2026-Q2 |
| SPHERA FUNDS MANAGEMENT LTD. | 94,265 | $5M | 0.1% | 2026-Q2 |
| Invesco Ltd. trimmed | 94,156 | $5M | 0.1% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 91,500 | $5M | 0.1% | 2026-Q2 |
| FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. trimmed | 91,018 | $5M | 0.1% | 2026-Q2 |
| Nicholas Investment Partners, LP added | 90,334 | $5M | 0.1% | 2026-Q2 |
| BEACONLIGHT CAPITAL, LLC new | 87,893 | $5M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 85,644 | $5M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 79,737 | $4M | 0.1% | 2026-Q2 |
| StoneCrest Wealth Management, Inc. added | 78,780 | $4M | 0.1% | 2026-Q2 |
| Aisling Capital Management LP | 77,031 | $4M | 0.1% | 2026-Q2 |
| Hudson Bay Capital Management LP trimmed | 75,000 | $4M | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 72,527 | $4M | 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.