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 ($473.1k this quarter). Holder counts are more reliable. Shares outstanding: 94.7m as of 2025-02-24, 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 ≈ $32.16. Options: 9 managers hold calls ($22.8m notional), 9 hold puts ($15.9m).
Trends to Q1 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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 62 | 41 |
| 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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $1.3m | $337.0k | 0.26 |
| Q3 2024 | $4.7m | $6.4m | 1.37 |
| Q4 2024 | $75.1m | $52.2m | 0.70 |
| Q1 2025 | $22.8m | $15.9m | 0.70 |
Biggest buyers
| Vestal Point Capital, LP | New | +1.3m |
| RA CAPITAL MANAGEMENT, L.P. | Added | +1.1m |
| Man Group plc | New | +987.7k |
| JANUS HENDERSON GROUP PLC | Added | +821.0k |
| Commodore Capital LP | Added | +795.0k |
| STATE STREET CORP | Added | +494.8k |
| MORGAN STANLEY | Added | +440.1k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Added | +423.1k |
| Capital World Investors | Added | +406.8k |
| LORD, ABBETT & CO. LLC | Added | +406.1k |
Biggest sellers
| MARSHALL WACE, LLP | Reduced | -1.3m |
| CITADEL ADVISORS LLC | Reduced | -750.5k |
| Boxer Capital Management, LLC | Sold out | -750.0k |
| Fairmount Funds Management LLC | Reduced | -588.9k |
| MPM BIOIMPACT LLC | Sold out | -416.1k |
| Paradigm Biocapital Advisors LP | Sold out | -400.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -389.5k |
| NORGES BANK | Reduced | -357.4k |
| D. E. Shaw & Co., Inc. | Reduced | -349.2k |
| GOLDMAN SACHS GROUP INC | Reduced | -316.2k |
Biggest calls
| Caption Management, LLC | Added | $10.9m337.7k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $5.6m173.6k shares |
| Ikarian Capital, LLC | Reduced | $3.2m100.0k shares |
| CITADEL ADVISORS LLC | Reduced | $1.2m37.2k shares |
| BOOTHBAY FUND MANAGEMENT, LLC | Added | $1.0m32.1k shares |
| JANE STREET GROUP, LLC | Reduced | $807.0k25.1k shares |
| GROUP ONE TRADING LLC | Reduced | $61.1k1.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $48.0k1.5k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $5.0m156.3k shares |
| Jefferies Financial Group Inc. | Unchanged | $4.3m134.2k shares |
| JANE STREET GROUP, LLC | Reduced | $3.0m94.1k shares |
| CITADEL ADVISORS LLC | Reduced | $900.2k28.0k shares |
| SIG BROKERAGE, LP | Unchanged | $762.0k23.7k shares |
| GROUP ONE TRADING LLC | Reduced | $671.9k20.9k shares |
| WOLVERINE TRADING, LLC | Unchanged | $656.8k20.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $530.0k16.5k 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 Q1 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 |
|---|---|---|---|---|---|
| Q2 2023 | 0 | — | 0 | — | — |
| 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 |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-03-24 | Moore Erin Interim PFO and PAO | Sold plan | $449.2k13.6k shares |
| 2025-03-24 | Sacco Tracey Chief Commercial Officer | Sold plan | $215.0k6.5k shares |
| 2025-03-17 | Peng Katie Director | Sold plan | $34.6k1.0k shares |
| 2025-03-10 | Myles Edward H COO & CFO | Sold plan | $5.1m142.3k shares |
| 2025-02-19 | Qatanani Mo CHIEF SCIENTIFIC OFFICER | Sold plan | $2.6m68.5k shares |
| 2025-02-18 | Backstrom Jay T. CHIEF EXECUTIVE OFFICER, director | Sold | $676.6k18.4k shares |
| 2025-02-18 | Myles Edward H COO & CFO | Sold | $287.6k7.8k shares |
| 2025-02-18 | Ho Junlin GENERAL COUNSEL | Sold | $211.5k5.7k shares |
| 2025-02-18 | Parlavecchio Caryn CHRO | Sold | $195.1k5.3k shares |
| 2025-02-18 | Qatanani Mo CHIEF SCIENTIFIC OFFICER | Sold plan | $152.3k4.1k shares |
| 2025-01-16 | Backstrom Jay T. CHIEF EXECUTIVE OFFICER, director | Sold | $986.0k22.3k shares |
| 2025-01-16 | Myles Edward H COO & CFO | Sold | $554.2k12.5k shares |
| 2025-01-16 | Ho Junlin GENERAL COUNSEL | Sold | $399.5k9.0k shares |
| 2025-01-16 | Qatanani Mo CHIEF SCIENTIFIC OFFICER | Sold | $324.7k7.3k shares |
| 2025-01-16 | Parlavecchio Caryn CHRO | Sold | $284.4k6.4k shares |
| 2025-01-16 | Marantz Jing L. CHIEF MEDICAL OFFICER | Sold | $250.0k5.7k shares |
| 2025-01-16 | Sacco Tracey Chief Commercial Officer | Sold | $171.9k3.9k 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, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.03% of their portfolio | 13.8m $443.5m | Added +159.2k |
| Siren, L.L.C. 16.78% of their portfolio | 9.3m $297.4m | Unchanged |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.04% of their portfolio | 8.9m $285.9m | Reduced -389.5k |
| BlackRock, Inc. 0.00% of their portfolio | 7.3m $234.9m | Added +134.9k |
| SAMSARA BIOCAPITAL, LLC 32.18% of their portfolio | 5.6m $180.5m | Unchanged |
| VANGUARD GROUP INC 0.00% of their portfolio | 4.8m $155.8m | Added +101.7k |
| Redmile Group, LLC 13.37% of their portfolio | 4.4m $141.4m | Reduced -151.6k |
| STATE STREET CORP 0.00% of their portfolio | 3.1m $100.8m | Added +494.8k |
| EVENTIDE ASSET MANAGEMENT, LLC 1.70% of their portfolio | 2.7m $85.6m | Added +2.4k |
| Polar Capital Holdings Plc 0.51% of their portfolio | 2.6m $83.1m | Reduced -125.0k |
| Bellevue Group AG 1.81% of their portfolio | 2.5m $80.6m | Reduced -3.8k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.12% of their portfolio | 2.0m $64.9m | Added +423.1k |
| Hood River Capital Management LLC 1.07% of their portfolio | 1.9m $62.5m | Added +45.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.8m $59.4m | Added +77.1k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 1.8m $59.3m | Added +119.4k |
| Commodore Capital LP 4.13% of their portfolio | 1.7m $56.1m | Added +795.0k |
| JANUS HENDERSON GROUP PLC 0.03% of their portfolio | 1.7m $54.8m | Added +821.0k |
| MARSHALL WACE, LLP 0.07% of their portfolio | 1.6m $52.6m | Reduced -1.3m |
| NORGES BANK 0.01% of their portfolio | 1.6m $52.5m | Reduced -357.4k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.4m $45.2m | Reduced -316.2k |
| Fairmount Funds Management LLC 6.85% of their portfolio | 1.4m $44.2m | Reduced -588.9k |
| Vestal Point Capital, LP 2.98% of their portfolio | 1.3m $41.8m | New |
| RA CAPITAL MANAGEMENT, L.P. 0.61% of their portfolio | 1.1m $36.5m | Added +1.1m |
| Capital World Investors 0.01% of their portfolio | 1.1m $36.3m | Added +406.8k |
| Man Group plc 0.09% of their portfolio | 987.7k $31.8m | New |
| CITADEL ADVISORS LLC 0.03% of their portfolio | 967.5k $31.1m | Reduced -750.5k |
| LORD, ABBETT & CO. LLC 0.10% of their portfolio | 877.4k $28.2m | Added +406.1k |
| Woodline Partners LP 0.18% of their portfolio | 860.3k $27.7m | Reduced -229.2k |
| MORGAN STANLEY 0.00% of their portfolio | 853.4k $27.4m | Added +440.1k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 765.3k $24.6m | Added +18.8k |
| Rock Springs Capital Management LP 1.40% of their portfolio | 761.5k $24.5m | Added +44.8k |
| LOOMIS SAYLES & CO L P 0.04% of their portfolio | 760.6k $24.5m | Reduced -16.0k |
| AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio | 663.9k $21.3m | Added +7.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 617.1k $19.8m | Reduced -5.3k |
| STEMPOINT CAPITAL LP 5.81% of their portfolio | 566.2k $18.2m | Added +399.9k |
| Driehaus Capital Management LLC 0.16% of their portfolio | 514.1k $16.5m | Reduced -1.9k |
| Candriam S.C.A. 0.10% of their portfolio | 496.8k $16.0m | Reduced -85.6k |
| Fisher Asset Management, LLC 0.01% of their portfolio | 456.9k $14.7m | Reduced -97.9k |
| Nuveen, LLC 0.00% of their portfolio | 397.3k $12.8m | First filing |
| TWO SIGMA INVESTMENTS, LP 0.03% of their portfolio | 372.7k $12.0m | Reduced -24.8k |
| Clearbridge Investments, LLC 0.01% of their portfolio | 343.5k $11.0m | Reduced -77.9k |
| TD Asset Management Inc 0.01% of their portfolio | 339.0k $10.9m | Reduced -23.8k |
| Ensign Peak Advisors, Inc 0.02% of their portfolio | 335.9k $10.8m | Added +148.0k |
| Octagon Capital Advisors LP 2.08% of their portfolio | 329.0k $10.6m | Reduced -159.0k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 326.4k $10.5m | Added +143.7k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 317.6k $10.2m | Reduced -349.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 317.4k $10.2m | Added +271.7k |
| Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A. 2.08% of their portfolio | 313.7k $10.1m | Reduced -72.2k |
| Soleus Capital Management, L.P. 0.72% of their portfolio | 285.0k $9.2m | Added +117.5k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 268.4k $8.6m | Added +109.8k |
| Ikarian Capital, LLC 2.56% of their portfolio | 244.2k $7.9m | Reduced -113.0k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 216.2k $7.0m | Added +8.7k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.01% of their portfolio | 215.4k $6.9m | Added +2.7k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 200.3k $6.4m | Added +54.6k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 182.9k $5.9m | Added +182.9k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 179.9k $5.8m | Reduced -5.1k |
| UBS Group AG 0.00% of their portfolio | 177.3k $5.7m | Added +92.6k |
| Artia Global Partners LP 1.62% of their portfolio | 172.2k $5.5m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 169.8k $5.5m | Added +34.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 160.8k $5.2m | Added +46.4k |
| TWINBEECH CAPITAL LP 0.09% of their portfolio | 159.7k $5.1m | New |
| ADAR1 Capital Management, LLC 0.97% of their portfolio | 157.1k $5.1m | Added +137.6k |
| BARCLAYS PLC 0.00% of their portfolio | 156.4k $5.0m | Reduced -8.0k |
| Patient Square Capital LP 2.05% of their portfolio | 154.0k $5.0m | Added +122.0k |
| ORBIMED ADVISORS LLC 0.12% of their portfolio | 151.8k $4.9m | Unchanged |
| CITIGROUP INC 0.00% of their portfolio | 148.7k $4.8m | Added +50.3k |
| Swiss National Bank 0.00% of their portfolio | 127.0k $4.1m | Added +11.6k |
| Integral Health Asset Management, LLC 0.45% of their portfolio | 125.0k $4.0m | Reduced -250.0k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 121.6k $3.9m | Reduced -139.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 120.8k $3.9m | Added +7.5k |
| Sofinnova Investments, Inc. 0.28% of their portfolio | 116.1k $3.7m | New |
| Rafferty Asset Management, LLC 0.02% of their portfolio | 111.7k $3.6m | Added +33.6k |
| AXA S.A. 0.01% of their portfolio | 106.0k $3.4m | Reduced -134 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.01% of their portfolio | 104.5k $3.4m | Reduced -97.0k |
| Informed Momentum Co LLC 0.51% of their portfolio | 92.0k $3.0m | Reduced -45.8k |
| Aberdeen Group plc 0.01% of their portfolio | 91.5k $2.9m | Reduced -50.7k |
| Pictet Asset Management Holding SA 0.00% of their portfolio | 89.0k $2.9m | Reduced -105.6k |
| Exome Asset Management LLC 2.43% of their portfolio | 84.3k $2.7m | Added +6.9k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 82.1k $2.6m | Added +2.8k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 81.2k $2.6m | Reduced -6.1k |
| SPHERA FUNDS MANAGEMENT LTD. 0.62% of their portfolio | 78.2k $2.5m | Reduced -12.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 75.1k $2.4m | Added +7.9k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 74.9k $2.4m | Added +33.9k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.08% of their portfolio | 70.7k $2.3m | Reduced -33.2k |
| Legal & General Group Plc 0.00% of their portfolio | 66.7k $2.1m | Added +4.9k |
| Jasper Ridge Partners, L.P. 0.07% of their portfolio | 64.2k $2.1m | Unchanged |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 61.8k $2.0m | Added +5.5k |
| Engineers Gate Manager LP 0.03% of their portfolio | 61.6k $2.0m | Added +54.8k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 61.4k $2.0m | Added +636 |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.00% of their portfolio | 60.5k $2.0m | Reduced -76.1k |
| DIADEMA PARTNERS LP 1.49% of their portfolio | 57.9k $1.9m | Added +4.8k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 57.3k $1.8m | Added +49.2k |
| E. Ohman J:or Asset Management AB 0.05% of their portfolio | 57.2k $1.8m | Added +3.7k |
| Trexquant Investment LP 0.02% of their portfolio | 57.1k $1.8m | Reduced -10.8k |
| INTECH INVESTMENT MANAGEMENT LLC 0.02% of their portfolio | 56.8k $1.8m | Added +21.5k |
| Invesco Ltd. 0.00% of their portfolio | 54.9k $1.8m | Reduced -257.2k |
| RICE HALL JAMES & ASSOCIATES, LLC 0.10% of their portfolio | 53.6k $1.7m | Reduced -2.4k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 53.0k $1.7m | Added +5.8k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 52.6k $1.7m | Added +44.0k |
| ExodusPoint Capital Management, LP 0.02% of their portfolio | 49.6k $1.6m | Reduced -41.7k |