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 ($1.9m this quarter). Holder counts are more reliable. Shares outstanding: 96.1m as of 2025-08-01, 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 ≈ $35.42. Options: 11 managers hold calls ($32.9m notional), 10 hold puts ($24.5m).
Trends to Q2 2025
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 |
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 2023 | 67 | 26 |
| Q4 2023 | 113 | 17 |
| Q1 2024 | 92 | 61 |
| Q2 2024 | 100 | 71 |
| Q3 2024 | 77 | 84 |
| Q4 2024 | 141 | 80 |
| Q1 2025 | 124 | 97 |
| Q2 2025 | 131 | 106 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $4.7m | $6.4m | 1.37 |
| Q4 2024 | $75.1m | $52.2m | 0.70 |
| Q1 2025 | $22.8m | $15.9m | 0.70 |
| Q2 2025 | $32.9m | $24.5m | 0.75 |
Biggest buyers
| Paradigm Biocapital Advisors LP | New | +1.6m |
| Balyasny Asset Management L.P. | New | +933.4k |
| Pictet Asset Management Holding SA | Added | +898.4k |
| ROYAL BANK OF CANADA | Added | +815.3k |
| JANUS HENDERSON GROUP PLC | Added | +780.1k |
| Driehaus Capital Management LLC | Added | +663.4k |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. | Added | +455.8k |
| Fairmount Funds Management LLC | Added | +450.0k |
| Bellevue Group AG | Added | +440.4k |
| JENNISON ASSOCIATES LLC | New | +365.9k |
Biggest sellers
| Polar Capital Holdings Plc | Reduced | -1.1m |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | -803.0k |
| BlackRock, Inc. | Reduced | -611.4k |
| Redmile Group, LLC | Reduced | -469.2k |
| NORGES BANK | Reduced | -458.1k |
| LORD, ABBETT & CO. LLC | Reduced | -403.2k |
| Man Group plc | Reduced | -386.6k |
| Octagon Capital Advisors LP | Sold out | -329.0k |
| Commodore Capital LP | Reduced | -295.0k |
| Ikarian Capital, LLC | Reduced | -195.0k |
Biggest calls
| Caption Management, LLC | Added | $13.0m367.7k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $7.5m211.1k shares |
| Ikarian Capital, LLC | Unchanged | $3.5m100.0k shares |
| JANE STREET GROUP, LLC | Added | $3.2m89.9k shares |
| CITADEL ADVISORS LLC | Added | $1.7m49.3k shares |
| BOOTHBAY FUND MANAGEMENT, LLC | Added | $1.3m36.4k shares |
| LMR Partners LLP | New | $1.3m36.4k shares |
| SIMPLEX TRADING, LLC | Added | $878.0k24.8k shares |
| GROUP ONE TRADING LLC | Added | $329.4k9.3k shares |
| Walleye Trading LLC | New | $113.3k3.2k shares |
Biggest puts
| Caption Management, LLC | New | $10.1m284.8k shares |
| Jefferies Financial Group Inc. | Unchanged | $4.8m134.2k shares |
| JANE STREET GROUP, LLC | Reduced | $3.2m89.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $3.1m88.9k shares |
| CITADEL ADVISORS LLC | Added | $1.4m40.0k shares |
| SIMPLEX TRADING, LLC | Added | $1.0m28.6k shares |
| SIG BROKERAGE, LP | Reduced | $485.3k13.7k shares |
| GROUP ONE TRADING LLC | Reduced | $258.6k7.3k shares |
| Walleye Trading LLC | New | $170.0k4.8k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 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 in Q2 2025
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 |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 2 | $21.6k | — |
| Q4 2023 | 1 | $15.0m | 2 | $1.6m | $1.1m |
| Q1 2024 | 0 | — | 5 | $660.6k | — |
| Q2 2024 | 0 | — | 4 | $186.6k | — |
| Q3 2024 | 0 | — | 2 | $30.1k | — |
| Q4 2024 | 0 | — | 4 | $45.3m | $45.3m |
| Q1 2025 | 0 | — | 9 | $12.8m | $8.5m |
| Q2 2025 | 0 | — | 11 | $2.8m | $2.3m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-06-23 | FLIER JEFFREY S. Director | Sold plan | $655.0k20.3k shares |
| 2025-06-23 | FLIER JEFFREY S. Director · By trust | Sold plan | $369.8k11.1k shares |
| 2025-06-16 | Ho Junlin GENERAL COUNSEL | Sold | $238.1k7.4k shares |
| 2025-06-16 | Parlavecchio Caryn CHRO | Sold | $198.0k6.2k shares |
| 2025-06-16 | Qatanani Mo CHIEF SCIENTIFIC OFFICER | Sold | $117.4k3.7k shares |
| 2025-06-16 | Peng Katie Director | Sold plan | $96.9k3.0k shares |
| 2025-05-29 | Vaishnaw Akshay President of R&D, director | Sold plan | $200.6k6.8k shares |
| 2025-05-29 | FLIER JEFFREY S. Director | Sold plan | $180.6k6.1k shares |
| 2025-05-29 | Brudnick Richard Director | Sold plan | $180.5k6.1k shares |
| 2025-05-29 | Burow Kristina Director | Sold plan | $160.5k5.4k shares |
| 2025-05-29 | Reed Joshua Director | Sold plan | $160.5k5.4k shares |
| 2025-05-29 | Gilman Michael Director | Sold plan | $100.3k3.4k shares |
| 2025-04-25 | Sacco Tracey Chief Commercial Officer | Sold plan | $164.1k5.0k 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 2025
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.03% of their portfolio | 13.8m $490.0m | Added +40.4k |
| Siren, L.L.C. 16.95% of their portfolio | 9.3m $327.6m | Unchanged |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.04% of their portfolio | 8.8m $310.3m | Reduced -132.2k |
| BlackRock, Inc. 0.00% of their portfolio | 6.7m $237.2m | Reduced -611.4k |
| SAMSARA BIOCAPITAL, LLC 40.66% of their portfolio | 5.6m $198.8m | Unchanged |
| VANGUARD GROUP INC 0.00% of their portfolio | 4.9m $172.2m | Added +16.4k |
| Redmile Group, LLC 14.81% of their portfolio | 3.9m $139.2m | Reduced -469.2k |
| STATE STREET CORP 0.00% of their portfolio | 3.1m $108.9m | Reduced -59.8k |
| Bellevue Group AG 2.30% of their portfolio | 2.9m $104.4m | Added +440.4k |
| EVENTIDE ASSET MANAGEMENT, LLC 1.81% of their portfolio | 2.9m $103.2m | Added +251.6k |
| JANUS HENDERSON GROUP PLC 0.04% of their portfolio | 2.5m $86.7m | Added +780.1k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 2.0m $71.7m | Added +179.9k |
| Hood River Capital Management LLC 0.98% of their portfolio | 2.0m $70.0m | Added +30.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.9m $66.9m | Added +40.0k |
| Fairmount Funds Management LLC 8.37% of their portfolio | 1.8m $64.6m | Added +450.0k |
| MARSHALL WACE, LLP 0.07% of their portfolio | 1.6m $58.1m | Added +5.1k |
| Paradigm Biocapital Advisors LP 2.42% of their portfolio | 1.6m $56.7m | New |
| Polar Capital Holdings Plc 0.28% of their portfolio | 1.5m $53.1m | Reduced -1.1m |
| Vestal Point Capital, LP 2.80% of their portfolio | 1.5m $53.1m | Added +200.0k |
| Commodore Capital LP 3.63% of their portfolio | 1.4m $51.4m | Reduced -295.0k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.3m $45.7m | Reduced -114.5k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.07% of their portfolio | 1.2m $43.0m | Reduced -803.0k |
| Driehaus Capital Management LLC 0.33% of their portfolio | 1.2m $41.7m | Added +663.4k |
| NORGES BANK 0.01% of their portfolio | 1.2m $41.6m | Reduced -458.1k |
| RA CAPITAL MANAGEMENT, L.P. 0.68% of their portfolio | 1.1m $40.3m | Unchanged |
| Capital World Investors 0.01% of their portfolio | 1.1m $40.0m | Unchanged |
| Pictet Asset Management Holding SA 0.04% of their portfolio | 987.5k $35.0m | Added +898.4k |
| CITADEL ADVISORS LLC 0.03% of their portfolio | 976.6k $34.6m | Added +9.1k |
| Woodline Partners LP 0.18% of their portfolio | 944.4k $33.5m | Added +84.1k |
| Balyasny Asset Management L.P. 0.08% of their portfolio | 933.4k $33.1m | New |
| MORGAN STANLEY 0.00% of their portfolio | 904.4k $32.0m | Added +51.0k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 815.4k $28.9m | Added +815.3k |
| Rock Springs Capital Management LP 1.75% of their portfolio | 794.1k $28.1m | Added +32.6k |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. 3.22% of their portfolio | 769.4k $27.3m | Added +455.8k |
| LOOMIS SAYLES & CO L P 0.03% of their portfolio | 742.9k $26.3m | Reduced -17.7k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 736.8k $26.1m | Reduced -28.5k |
| AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio | 692.7k $24.5m | Added +28.7k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 644.2k $22.8m | Added +317.8k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 635.9k $22.5m | Added +18.8k |
| Man Group plc 0.05% of their portfolio | 601.2k $21.3m | Reduced -386.6k |
| Ensign Peak Advisors, Inc 0.04% of their portfolio | 600.6k $21.3m | Added +264.7k |
| STEMPOINT CAPITAL LP 6.02% of their portfolio | 528.1k $18.7m | Reduced -38.1k |
| Nuveen, LLC 0.00% of their portfolio | 496.6k $17.6m | Added +99.2k |
| LORD, ABBETT & CO. LLC 0.05% of their portfolio | 474.1k $16.8m | Reduced -403.2k |
| Fisher Asset Management, LLC 0.01% of their portfolio | 412.4k $14.6m | Reduced -44.5k |
| VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 375.3k $13.3m | Added +107.0k |
| JENNISON ASSOCIATES LLC 0.01% of their portfolio | 365.9k $13.0m | New |
| SILVERARC CAPITAL MANAGEMENT, LLC 2.47% of their portfolio | 341.0k $12.1m | New |
| Candriam S.C.A. 0.07% of their portfolio | 339.3k $12.0m | Reduced -157.4k |
| UBS Group AG 0.00% of their portfolio | 339.0k $12.0m | Added +161.8k |
| TD Asset Management Inc 0.01% of their portfolio | 333.6k $11.8m | Reduced -5.4k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 291.2k $10.3m | Reduced -26.2k |
| BARCLAYS PLC 0.00% of their portfolio | 285.3k $10.1m | Added +128.9k |
| Clearbridge Investments, LLC 0.01% of their portfolio | 284.4k $10.1m | Reduced -59.1k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 273.6k $9.7m | Added +198.4k |
| Eagle Health Investments LP 2.36% of their portfolio | 269.4k $9.5m | New |
| FEDERATED HERMES, INC. 0.02% of their portfolio | 241.0k $8.5m | Added +238.8k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 225.9k $8.0m | Reduced -146.8k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 222.4k $7.9m | Added +6.2k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.01% of their portfolio | 209.2k $7.4m | Reduced -6.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 205.1k $7.3m | Added +35.3k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.01% of their portfolio | 192.0k $6.8m | Added +131.5k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 171.9k $6.1m | Reduced -8.0k |
| Patient Square Capital LP 1.97% of their portfolio | 154.0k $5.5m | Unchanged |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 153.9k $5.5m | Reduced -29.0k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 136.3k $4.8m | Reduced -181.4k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 132.3k $4.7m | New |
| Swiss National Bank 0.00% of their portfolio | 127.0k $4.5m | Unchanged |
| Artia Global Partners LP 1.15% of their portfolio | 126.3k $4.5m | Reduced -45.9k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 125.5k $4.4m | Added +64.1k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 125.4k $4.4m | Added +4.6k |
| Soleus Capital Management, L.P. 0.31% of their portfolio | 125.0k $4.4m | Reduced -160.0k |
| Tetragon Partners GP Ltd 0.66% of their portfolio | 103.5k $3.7m | New |
| Integral Health Asset Management, LLC 0.33% of their portfolio | 100.0k $3.5m | Reduced -25.0k |
| Rafferty Asset Management, LLC 0.01% of their portfolio | 99.9k $3.5m | Reduced -11.8k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 97.3k $3.4m | Reduced -63.4k |
| AXA S.A. 0.01% of their portfolio | 93.0k $3.3m | Reduced -13.0k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 89.1k $3.2m | Added +7.9k |
| Exome Asset Management LLC 2.54% of their portfolio | 84.3k $3.0m | Unchanged |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 82.1k $2.9m | Unchanged |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.00% of their portfolio | 76.7k $2.7m | Added +60.8k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 73.9k $2.6m | Added +21.3k |
| Granahan Investment Management, LLC 0.11% of their portfolio | 73.4k $2.6m | New |
| Legal & General Group Plc 0.00% of their portfolio | 71.8k $2.5m | Added +5.1k |
| Moody Aldrich Partners LLC 0.45% of their portfolio | 66.3k $2.3m | Added +38.9k |
| E. Ohman J:or Asset Management AB 0.06% of their portfolio | 64.6k $2.3m | Added +7.4k |
| Jasper Ridge Partners, L.P. 0.06% of their portfolio | 64.2k $2.3m | Unchanged |
| DIADEMA PARTNERS LP 1.39% of their portfolio | 62.9k $2.2m | Added +5.0k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 62.4k $2.2m | Added +577 |
| Informed Momentum Co LLC 0.33% of their portfolio | 62.3k $2.2m | Reduced -29.7k |
| Invesco Ltd. 0.00% of their portfolio | 62.0k $2.2m | Added +7.0k |
| GREAT POINT PARTNERS LLC 1.42% of their portfolio | 61.6k $2.2m | New |
| SPHERA FUNDS MANAGEMENT LTD. 0.53% of their portfolio | 57.5k $2.0m | Reduced -20.7k |
| RICE HALL JAMES & ASSOCIATES, LLC 0.11% of their portfolio | 56.7k $2.0m | Added +3.2k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.05% of their portfolio | 54.6k $1.9m | Added +46.7k |
| CITIGROUP INC 0.00% of their portfolio | 51.7k $1.8m | Reduced -97.0k |
| EFG Asset Management (North America) Corp. 0.26% of their portfolio | 51.5k $1.8m | New |
| MASTERS CAPITAL MANAGEMENT LLC 0.34% of their portfolio | 50.0k $1.8m | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 50.0k $1.8m | Reduced -24.9k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 49.4k $1.8m | Reduced -3.7k |