SCHOLAR ROCK HLDG CORP SRRK
COM · Common Stock · CUSIP 80706P103 · ISIN US80706P1030
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersCambridge, MA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($2.6m this quarter). Holder counts are more reliable. Shares outstanding: 121.8m as of 2026-08-03, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $55.00. Options: 8 managers hold calls ($15.0m notional), 9 hold puts ($22.7m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 85 |
| Q4 2022 | 83 |
| Q1 2023 | 88 |
| Q2 2023 | 86 |
| Q3 2023 | 90 |
| Q4 2023 | 134 |
| Q1 2024 | 162 |
| Q2 2024 | 167 |
| Q3 2024 | 162 |
| Q4 2024 | 225 |
| Q1 2025 | 232 |
| Q2 2025 | 238 |
| Q3 2025 | 242 |
| Q4 2025 | 275 |
| Q1 2026 | 275 |
| Q2 2026 | 307 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 77 | 84 |
| Q4 2024 | 141 | 80 |
| Q1 2025 | 124 | 97 |
| Q2 2025 | 131 | 106 |
| Q3 2025 | 134 | 98 |
| Q4 2025 | 159 | 105 |
| Q1 2026 | 146 | 113 |
| Q2 2026 | 181 | 103 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $80.2m | $100.9m | 1.26 |
| Q4 2025 | $23.6m | $31.0m | 1.31 |
| Q1 2026 | $20.5m | $33.9m | 1.65 |
| Q2 2026 | $15.0m | $22.7m | 1.51 |
Biggest buyers
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | New | +2.6m |
| BlackRock, Inc. | Added | +2.0m |
| Orbis Allan Gray Ltd | Added | +1.8m |
| MORGAN STANLEY | Added | +1.3m |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Added | +1.0m |
| VANGUARD CAPITAL MANAGEMENT LLC | Added | +876.5k |
| FRANKLIN RESOURCES INC | Added | +851.8k |
| FMR LLC | Added | +752.1k |
| STATE STREET CORP | Added | +697.4k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +604.8k |
Biggest sellers
| Redmile Group, LLC | Reduced | -4.8m |
| STEMPOINT CAPITAL LP | Reduced | -1.8m |
| Vestal Point Capital, LP | Sold out | -1.3m |
| Siren, L.L.C. | Reduced | -1.2m |
| Paradigm Biocapital Advisors LP | Sold out | -1.2m |
| Bellevue Group AG | Reduced | -1.1m |
| JENNISON ASSOCIATES LLC | Reduced | -981.9k |
| MARSHALL WACE, LLP | Reduced | -629.8k |
| CITADEL ADVISORS LLC | Reduced | -568.9k |
| JANE STREET GROUP, LLC | Sold out | -560.1k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $8.6m156.8k shares |
| JPMORGAN CHASE & CO | New | $1.5m27.0k shares |
| CITADEL ADVISORS LLC | Reduced | $1.5m26.6k shares |
| JANE STREET GROUP, LLC | Reduced | $1.4m24.8k shares |
| Point72 Asset Management, L.P. | Unchanged | $836.0k15.2k shares |
| IMC-Chicago, LLC | Reduced | $621.5k11.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $368.5k6.7k shares |
| GROUP ONE TRADING LLC | Reduced | $236.5k4.3k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $8.9m161.6k shares |
| CITADEL ADVISORS LLC | Added | $5.6m101.2k shares |
| JANE STREET GROUP, LLC | Reduced | $2.7m49.0k shares |
| JPMORGAN CHASE & CO | New | $1.5m27.0k shares |
| IMC-Chicago, LLC | Reduced | $1.4m25.1k shares |
| LMR Partners LLP | New | $1.3m23.0k shares |
| Caption Management, LLC | Reduced | $594.0k10.8k shares |
| SIMPLEX TRADING, LLC | Added | $423.5k7.7k shares |
| GROUP ONE TRADING LLC | Reduced | $390.5k7.1k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution filed 2025-02-12 | 15.0% |
| Invus Global Management, LLC 13G · passive investor -3.4 pts · filed 2026-08-13 | 8.0% |
| Samsara BioCapital, L.P. 13D · may seek influence filed 2025-10-07 | 7.2% |
| WELLINGTON MANAGEMENT GROUP LLP 13G · institution new · filed 2026-02-10 | 5.6% |
| PRICE T ROWE ASSOCIATES INC /MD/ 13G · institution -1.8 pts · filed 2026-05-15 | 5.4% |
Fell to 5% or below in the last year: Redmile Group, LLC (3.6%, 2026-08-14), VANGUARD GROUP INC (0.0%, 2026-03-27)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 4 | $45.3m | $45.3m |
| Q1 2025 | 0 | — | 9 | $12.8m | $8.5m |
| Q2 2025 | 0 | — | 11 | $2.8m | $2.3m |
| Q3 2025 | 0 | — | 4 | $1.6m | $1.3m |
| Q4 2025 | 1 | $20.0m | 2 | $6.2m | $6.2m |
| Q1 2026 | 0 | — | 8 | $9.2m | $1.7m |
| Q2 2026 | 0 | — | 4 | $3.1m | — |
| Q3 2026 | 0 | — | 5 | $871.6k | $871.6k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-07-01 | Peng Katie Director | Sold plan | $293.4k5.4k shares |
| 2026-07-01 | FLIER JEFFREY S. Director | Sold plan | $164.5k3.1k shares |
| 2026-07-01 | Reed Joshua Director | Sold plan | $164.1k3.1k shares |
| 2026-07-01 | Burow Kristina Director | Sold plan | $164.1k3.1k shares |
| 2026-07-01 | Gilman Michael Director | Sold plan | $137.1k2.5k shares |
| 2026-04-16 | Hallal David Chief Executive Officer, director | Sold | $1.5m30.6k shares |
| 2026-04-16 | Vaishnaw Akshay President of R&D, director | Sold | $607.0k12.2k shares |
| 2026-04-16 | Sinha Vikas Chief Financial Officer | Sold | $516.0k10.4k shares |
| 2026-04-16 | Woods Keith Chief Operating Officer | Sold | $506.6k10.2k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.04% of their portfolio | 18.0m $989.7m | Added +752.1k |
| Siren, L.L.C. 10.69% of their portfolio | 9.6m $526.6m | Reduced -1.2m |
| BlackRock, Inc. 0.01% of their portfolio | 9.5m $522.2m | Added +2.0m |
| SAMSARA BIOCAPITAL, LLC 31.16% of their portfolio | 6.9m $379.4m | Unchanged |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.04% of their portfolio | 6.8m $373.7m | Added +588.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.06% of their portfolio | 6.7m $370.0m | Added +9.4k |
| Orbis Allan Gray Ltd 1.12% of their portfolio | 5.9m $326.3m | Added +1.8m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 4.8m $262.2m | Added +876.5k |
| STATE STREET CORP 0.01% of their portfolio | 4.7m $260.1m | Added +697.4k |
| Redmile Group, LLC 15.92% of their portfolio | 4.3m $237.1m | Reduced -4.8m |
| NORGES BANK 0.02% of their portfolio | 2.8m $152.3m | Not comparable |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 2.8m $151.5m | Added +604.8k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.05% of their portfolio | 2.6m $143.4m | New |
| Bellevue Group AG 2.83% of their portfolio | 2.4m $134.7m | Reduced -1.1m |
| JENNISON ASSOCIATES LLC 0.08% of their portfolio | 2.4m $129.7m | Reduced -981.9k |
| Jupiter Topco LLC 0.05% of their portfolio | 2.2m $123.3m | First filing |
| Hood River Capital Management LLC 0.89% of their portfolio | 2.2m $122.4m | Added +175.1k |
| Driehaus Capital Management LLC 0.70% of their portfolio | 2.2m $121.3m | Added +285.4k |
| EVENTIDE ASSET MANAGEMENT, LLC 1.55% of their portfolio | 2.1m $116.1m | Reduced -86.0k |
| Polar Capital Holdings Plc 0.29% of their portfolio | 1.9m $103.3m | Reduced -105.0k |
| Holocene Advisors, LP 0.22% of their portfolio | 1.8m $96.6m | Reduced -134.9k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.13% of their portfolio | 1.7m $95.2m | Added +1.0m |
| MORGAN STANLEY 0.00% of their portfolio | 1.5m $84.6m | Added +1.3m |
| Woodline Partners LP 0.26% of their portfolio | 1.5m $82.5m | Unchanged |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.4m $77.6m | Added +12.5k |
| Capital World Investors 0.01% of their portfolio | 1.2m $63.8m | Added +31.7k |
| Clearbridge Investments, LLC 0.05% of their portfolio | 1.1m $58.3m | Added +368.4k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 1.0m $56.5m | Added +305.6k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.05% of their portfolio | 979.8k $53.9m | Reduced -2.1k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 975.2k $53.6m | Added +268.1k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 974.6k $53.6m | Added +210.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 972.3k $53.5m | Reduced -364.4k |
| Pictet Asset Management Holding SA 0.05% of their portfolio | 911.1k $50.1m | Added +36.0k |
| VOYA INVESTMENT MANAGEMENT LLC 0.04% of their portfolio | 890.6k $49.0m | Added +165.2k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 878.7k $48.3m | Added +851.8k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 864.3k $47.5m | Added +163.3k |
| Integral Health Asset Management, LLC 1.69% of their portfolio | 750.0k $41.2m | Added +250.0k |
| FEDERATED HERMES, INC. 0.06% of their portfolio | 734.5k $40.4m | Reduced -63.4k |
| VANGUARD FIDUCIARY TRUST CO 0.01% of their portfolio | 730.1k $40.2m | Added +141.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio | 717.5k $39.5m | Reduced -6.4k |
| Rock Springs Capital Management LP 1.92% of their portfolio | 715.5k $39.3m | Reduced -24.4k |
| Casdin Capital, LLC 1.83% of their portfolio | 665.0k $36.6m | Added +315.0k |
| Nuveen, LLC 0.01% of their portfolio | 651.7k $35.8m | Added +70.1k |
| LOOMIS SAYLES & CO L P 0.04% of their portfolio | 596.1k $32.8m | Reduced -42.6k |
| Ensign Peak Advisors, Inc 0.05% of their portfolio | 579.1k $31.8m | Reduced -138.2k |
| Eagle Health Investments LP 5.06% of their portfolio | 555.3k $30.5m | Added +61.3k |
| UBS Group AG 0.00% of their portfolio | 511.2k $28.1m | Reduced -168.6k |
| Qube Research & Technologies Ltd 0.03% of their portfolio | 463.7k $25.5m | New |
| Fisher Asset Management, LLC 0.01% of their portfolio | 439.4k $24.2m | Reduced -18.6k |
| MARSHALL WACE, LLP 0.02% of their portfolio | 430.5k $23.7m | Reduced -629.8k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 365.2k $20.1m | Added +132.5k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 331.9k $18.3m | Reduced -568.9k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 303.3k $16.7m | Added +61.5k |
| Squarepoint Ops LLC 0.03% of their portfolio | 292.0k $16.1m | Added +242.0k |
| NAN FUNG TRINITY (HK) LTD 1.55% of their portfolio | 285.5k $15.7m | Unchanged |
| ARMISTICE CAPITAL, LLC 0.42% of their portfolio | 278.0k $15.3m | Reduced -59.0k |
| Trexquant Investment LP 0.09% of their portfolio | 275.7k $15.2m | Added +199.0k |
| First Turn Management, LLC 1.60% of their portfolio | 271.2k $14.9m | Reduced -175.2k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 247.5k $13.6m | Added +35.6k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 245.0k $13.5m | Added +230.4k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 240.7k $13.2m | Reduced -12.9k |
| STEMPOINT CAPITAL LP 2.28% of their portfolio | 239.1k $13.2m | Reduced -1.8m |
| Candriam S.C.A. 0.05% of their portfolio | 216.1k $11.9m | Reduced -9.9k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.02% of their portfolio | 210.0k $11.5m | Added +32.6k |
| Senator Investment Group LP 0.41% of their portfolio | 205.0k $11.3m | Not comparable |
| Logos Global Management LP 0.47% of their portfolio | 200.0k $11.0m | New |
| Susquehanna Portfolio Strategies, LLC 0.17% of their portfolio | 199.1k $10.9m | Added +150.9k |
| SEGALL BRYANT & HAMILL, LLC 0.12% of their portfolio | 188.6k $10.4m | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 177.7k $10.0m | Added +3.3k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 173.6k $9.5m | Added +30.3k |
| Granahan Investment Management, LLC 0.32% of their portfolio | 163.8k $9.0m | Added +7.4k |
| Swiss National Bank 0.00% of their portfolio | 149.8k $8.2m | Added +26.6k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 145.5k $8.0m | Added +33.0k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 139.8k $6.9m | Added +39.1k |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.25% of their portfolio | 139.5k $7.7m | Reduced -7.1k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 133.5k $7.3m | Added +95.6k |
| GordonMD Global Investments LP 3.53% of their portfolio | 132.5k $7.3m | Unchanged |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 130.5k $7.2m | Added +116.8k |
| MGO ONE SEVEN LLC 0.11% of their portfolio | 125.1k $6.9m | New |
| iA Global Asset Management Inc. 0.08% of their portfolio | 122.8k $6.8m | Reduced -400 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.01% of their portfolio | 122.2k $6.7m | Reduced -51.5k |
| TD Asset Management Inc 0.01% of their portfolio | 120.4k $6.6m | Reduced -102.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 115.0k $6.3m | Added +82.3k |
| CITIGROUP INC 0.00% of their portfolio | 113.0k $6.2m | Added +74.3k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 111.2k $6.1m | Added +8.3k |
| EFG International AG 0.11% of their portfolio | 110.6k $6.1m | Reduced -2.1k |
| Man Group plc 0.01% of their portfolio | 104.3k $5.7m | Added +42.2k |
| Ghisallo Capital Management LLC 0.11% of their portfolio | 100.0k $5.5m | New |
| Artia Global Partners LP 1.01% of their portfolio | 96.3k $5.3m | Unchanged |
| SPHERA FUNDS MANAGEMENT LTD. 0.74% of their portfolio | 94.3k $5.2m | Unchanged |
| Invesco Ltd. 0.00% of their portfolio | 94.2k $5.2m | Reduced -25.4k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 91.5k $5.0m | New |
| FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. 0.15% of their portfolio | 91.0k $5.0m | Reduced -7.7k |
| Nicholas Investment Partners, LP 0.28% of their portfolio | 90.3k $5.0m | Added +7.8k |
| BEACONLIGHT CAPITAL, LLC 2.13% of their portfolio | 87.9k $4.8m | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 85.6k $4.7m | Added +10.7k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 79.7k $4.4m | Added +15.1k |
| StoneCrest Wealth Management, Inc. 1.38% of their portfolio | 78.8k $4.3m | Added +7.9k |
| Aisling Capital Management LP 0.90% of their portfolio | 77.0k $4.2m | Unchanged |
| Hudson Bay Capital Management LP 0.02% of their portfolio | 75.0k $4.1m | Reduced -8.4k |