SAREPTA THERAPEUTICS INC SRPT
COM · Common Stock · CUSIP 803607100 · ISIN US8036071004
Biopharmaceutical company
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersCambridge, MA
- Founded1980
- Websitesarepta.com
- 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 ($2.0m this quarter). Holder counts are more reliable. Shares outstanding: 97.7m 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 ≈ $17.12. Options: 36 managers hold calls ($133.9m notional), 34 hold puts ($80.0m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 376 |
| Q4 2022 | 414 |
| Q1 2023 | 427 |
| Q2 2023 | 406 |
| Q3 2023 | 396 |
| Q4 2023 | 397 |
| Q1 2024 | 416 |
| Q2 2024 | 486 |
| Q3 2024 | 460 |
| Q4 2024 | 467 |
| Q1 2025 | 433 |
| Q2 2025 | 365 |
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 | 201 | 180 |
| Q4 2023 | 181 | 206 |
| Q1 2024 | 215 | 178 |
| Q2 2024 | 291 | 175 |
| Q3 2024 | 225 | 237 |
| Q4 2024 | 212 | 220 |
| Q1 2025 | 211 | 249 |
| Q2 2025 | 222 | 217 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $285.3m | $239.6m | 0.84 |
| Q4 2024 | $211.4m | $184.1m | 0.87 |
| Q1 2025 | $102.4m | $81.3m | 0.79 |
| Q2 2025 | $133.9m | $80.0m | 0.60 |
Biggest buyers
| D. E. Shaw & Co., Inc. | Added | +4.5m |
| BlackRock, Inc. | Added | +2.2m |
| TWO SIGMA ADVISERS, LP | Added | +1.7m |
| TWO SIGMA INVESTMENTS, LP | Added | +1.6m |
| Qube Research & Technologies Ltd | Added | +1.6m |
| BNP PARIBAS FINANCIAL MARKETS | Added | +1.2m |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Added | +1.0m |
| FEDERATED HERMES, INC. | Added | +1.0m |
| MILLENNIUM MANAGEMENT LLC | Added | +855.3k |
| Y-Intercept (Hong Kong) Ltd | Added | +822.8k |
Biggest sellers
| Capital International Investors | Reduced | -8.6m |
| JANUS HENDERSON GROUP PLC | Reduced | -3.3m |
| Avoro Capital Advisors LLC | Sold out | -2.7m |
| JPMORGAN CHASE & CO | Reduced | -1.6m |
| DEUTSCHE BANK AG\ | Reduced | -1.5m |
| T. Rowe Price Investment Management, Inc. | Reduced | -1.5m |
| GROUPAMA ASSET MANAGMENT | Sold out | -1.3m |
| EcoR1 Capital, LLC | Sold out | -1.3m |
| UBS Group AG | Reduced | -945.4k |
| ALKEON CAPITAL MANAGEMENT LLC | Sold out | -853.8k |
Biggest calls
| GROUP ONE TRADING LLC | Added | $26.6m1.6m shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $24.7m1.4m shares |
| Caption Management, LLC | Added | $15.4m898.4k shares |
| JANE STREET GROUP, LLC | Added | $8.6m504.7k shares |
| SIMPLEX TRADING, LLC | Added | $8.0m469.5k shares |
| Ikarian Capital, LLC | New | $5.7m332.1k shares |
| CITADEL ADVISORS LLC | Added | $5.6m330.3k shares |
| PEAK6 LLC | Added | $4.3m249.8k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $3.8m222.5k shares |
| GOLDMAN SACHS GROUP INC | Added | $3.7m217.4k shares |
Biggest puts
| WHITEBOX ADVISORS LLC | New | $12.2m714.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $10.0m584.1k shares |
| JANE STREET GROUP, LLC | Added | $7.7m452.2k shares |
| Deep Track Capital, LP | New | $7.7m450.0k shares |
| CITADEL ADVISORS LLC | Added | $6.4m373.1k shares |
| Balyasny Asset Management L.P. | New | $5.0m290.0k shares |
| GROUP ONE TRADING LLC | Added | $3.9m230.2k shares |
| Caption Management, LLC | New | $3.2m186.2k shares |
| SIMPLEX TRADING, LLC | Added | $2.9m169.4k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $2.8m163.4k 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 |
|---|---|
| BlackRock, Inc. 13G · institution +3.2 pts · filed 2026-07-30 | 15.8% |
| STATE STREET CORP 13G · institution +3.0 pts · filed 2026-08-07 | 8.4% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution +1.6 pts · filed 2026-07-31 | 8.1% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.1% |
| AQR CAPITAL MANAGEMENT LLC 13G · institution -2.7 pts · filed 2026-08-13 | 5.0% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), D. E. SHAW & CO, L.P. (1.9%, 2025-11-14)
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 | 1 | $7.4m | 1 | $1.6m | — |
| Q4 2023 | 2 | $5.9m | 0 | — | — |
| Q1 2024 | 0 | — | 6 | $3.0m | — |
| Q2 2024 | 0 | — | 3 | $8.7m | $8.7m |
| Q3 2024 | 1 | $5.0m | 1 | $822.1k | — |
| Q4 2024 | 0 | — | 2 | $1.5m | — |
| Q1 2025 | 0 | — | 1 | $248.2k | — |
| Q2 2025 | 0 | — | 0 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 12.1m $207.2m | Added +2.2m |
| VANGUARD GROUP INC 0.00% of their portfolio | 9.2m $156.6m | Added +127.6k |
| STATE STREET CORP 0.00% of their portfolio | 4.7m $80.3m | Added +626.6k |
| D. E. Shaw & Co., Inc. 0.08% of their portfolio | 4.5m $76.6m | Added +4.5m |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 2.5m $43.3m | Reduced -116.2k |
| TWO SIGMA INVESTMENTS, LP 0.07% of their portfolio | 2.2m $37.0m | Added +1.6m |
| TWO SIGMA ADVISERS, LP 0.07% of their portfolio | 2.0m $34.0m | Added +1.7m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.9m $32.1m | Added +55.1k |
| Erste Asset Management GmbH 0.23% of their portfolio | 1.6m $27.7m | Added +560.4k |
| Qube Research & Technologies Ltd 0.04% of their portfolio | 1.6m $27.3m | Added +1.6m |
| MORGAN STANLEY 0.00% of their portfolio | 1.5m $25.4m | Reduced -485.2k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.09% of their portfolio | 1.5m $25.2m | Added +1.0m |
| FEDERATED HERMES, INC. 0.04% of their portfolio | 1.3m $22.4m | Added +1.0m |
| Aberdeen Group plc 0.04% of their portfolio | 1.2m $21.5m | Added +592.1k |
| BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio | 1.2m $21.1m | Added +1.2m |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 1.1m $18.2m | Added +855.3k |
| Casdin Capital, LLC 1.54% of their portfolio | 990.1k $16.9m | Added +89.3k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 977.4k $16.7m | Added +434.0k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 916.8k $15.7m | Added +224.7k |
| NORGES BANK 0.00% of their portfolio | 913.4k $15.6m | Reduced -279.0k |
| Y-Intercept (Hong Kong) Ltd 0.36% of their portfolio | 870.2k $14.9m | Added +822.8k |
| Assenagon Asset Management S.A. 0.02% of their portfolio | 867.9k $14.8m | Added +155.4k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 803.9k $13.7m | Added +217.6k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 759.6k $13.0m | Reduced -10.3k |
| JANE STREET GROUP, LLC 0.02% of their portfolio | 676.3k $11.6m | Added +521.2k |
| 683 Capital Management, LLC 1.17% of their portfolio | 675.0k $11.5m | Added +510.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 673.9k $11.5m | Added +27.6k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 652.2k $11.2m | Reduced -1.6m |
| Bank of New York Mellon Corp 0.00% of their portfolio | 649.3k $11.1m | Reduced -141.8k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 627.6k $10.7m | Added +233.4k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 624.5k $10.7m | New |
| Connor, Clark & Lunn Investment Management Ltd. 0.04% of their portfolio | 615.4k $10.5m | Added +370.7k |
| Jump Financial, LLC 0.13% of their portfolio | 603.3k $10.3m | Added +597.5k |
| CAPITAL FUND MANAGEMENT S.A. 0.10% of their portfolio | 514.7k $8.8m | Added +314.6k |
| UBS Group AG 0.00% of their portfolio | 501.1k $8.6m | Reduced -945.4k |
| Opaleye Management Inc. 1.73% of their portfolio | 500.0k $8.6m | New |
| Capital International Investors 0.00% of their portfolio | 498.3k $8.5m | Reduced -8.6m |
| C WorldWide Group Holding A/S 0.11% of their portfolio | 490.3k $8.4m | Added +240.0k |
| ING GROEP NV 0.04% of their portfolio | 489.1k $6.4m | New |
| T. Rowe Price Investment Management, Inc. 0.01% of their portfolio | 474.8k $8.1m | Reduced -1.5m |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 461.0k $7.9m | Added +124.2k |
| Ikarian Capital, LLC 2.54% of their portfolio | 449.1k $7.7m | Added +280.0k |
| Balyasny Asset Management L.P. 0.02% of their portfolio | 444.7k $7.6m | New |
| Walleye Capital LLC 0.07% of their portfolio | 436.2k $7.5m | Added +423.3k |
| TANG CAPITAL MANAGEMENT LLC 0.36% of their portfolio | 420.3k $7.2m | New |
| BARCLAYS PLC 0.00% of their portfolio | 411.5k $7.0m | Reduced -34.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 396.2k $6.8m | Reduced -67.2k |
| Trexquant Investment LP 0.07% of their portfolio | 387.5k $6.6m | Added +199.5k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 376.3k $6.4m | Added +194.2k |
| Fiera Capital Corp 0.02% of their portfolio | 344.1k $5.9m | Reduced -1.7k |
| MPM BIOIMPACT LLC 0.95% of their portfolio | 321.7k $5.5m | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 302.2k $5.2m | Added +66.4k |
| Quinn Opportunity Partners LLC 0.43% of their portfolio | 289.7k $5.0m | New |
| Jain Global LLC 0.08% of their portfolio | 282.4k $4.8m | New |
| TWINBEECH CAPITAL LP 0.11% of their portfolio | 280.1k $4.8m | Added +15.1k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 273.1k $4.7m | Added +124.2k |
| Hudson Bay Capital Management LP 0.03% of their portfolio | 268.1k $4.6m | Added +67.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 267.3k $4.6m | Added +2.1k |
| Deep Track Capital, LP 0.14% of their portfolio | 259.8k $4.4m | Reduced -639.9k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.02% of their portfolio | 244.5k $4.2m | New |
| Invesco Ltd. 0.00% of their portfolio | 243.5k $4.2m | Added +38.2k |
| Legal & General Group Plc 0.00% of their portfolio | 234.8k $4.0m | Added +26.5k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 232.1k $4.0m | Reduced -2.8k |
| BANK OF NOVA SCOTIA 0.01% of their portfolio | 228.7k $3.9m | New |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 223.9k $3.8m | Reduced -20.9k |
| Aquatic Capital Management LLC 0.07% of their portfolio | 215.8k $3.7m | Added +123.5k |
| CITIGROUP INC 0.00% of their portfolio | 210.3k $3.6m | Reduced -173.5k |
| ADAR1 Capital Management, LLC 0.58% of their portfolio | 210.3k $3.6m | Added +87.4k |
| Amundi 0.00% of their portfolio | 202.8k $3.7m | Reduced -254.0k |
| DARK FOREST CAPITAL MANAGEMENT LP 0.14% of their portfolio | 199.4k $3.4m | Added +194.5k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 180.2k $3.1m | Added +121.5k |
| Pictet Asset Management Holding SA 0.00% of their portfolio | 178.7k $3.1m | Reduced -758.4k |
| Nuveen, LLC 0.00% of their portfolio | 174.3k $3.0m | Reduced -178.5k |
| Swiss National Bank 0.00% of their portfolio | 166.5k $2.8m | Unchanged |
| SPHERA FUNDS MANAGEMENT LTD. 0.71% of their portfolio | 159.3k $2.7m | Added +1.4k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.08% of their portfolio | 153.5k $2.6m | Added +100.5k |
| ALGERT GLOBAL LLC 0.05% of their portfolio | 149.9k $2.6m | Added +73.2k |
| Rafferty Asset Management, LLC 0.01% of their portfolio | 149.8k $2.6m | Added +50.7k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 148.4k $2.5m | Added +15.3k |
| Engineers Gate Manager LP 0.03% of their portfolio | 142.8k $2.4m | Added +67.4k |
| GROUP ONE TRADING LLC 0.08% of their portfolio | 142.3k $2.4m | Added +89.8k |
| Swedbank AB 0.00% of their portfolio | 137.4k $2.3m | First filing |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 134.1k $2.3m | Reduced -1.5m |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 129.6k $2.2m | Unchanged |
| Squarepoint Ops LLC 0.00% of their portfolio | 127.8k $2.2m | Reduced -124.6k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 126.0k $2.2m | Added +120.6k |
| Retirement Systems of Alabama 0.01% of their portfolio | 120.1k $2.1m | Added +3.9k |
| PDT Partners, LLC 0.11% of their portfolio | 116.2k $2.0m | Added +62.5k |
| California Public Employees Retirement System 0.00% of their portfolio | 115.3k $2.0m | Added +7.7k |
| HRT FINANCIAL LP 0.01% of their portfolio | 111.7k $1.9m | Added +76.5k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 110.5k $1.9m | Added +36.2k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 108.8k $1.9m | Reduced -45.5k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 106.3k $1.8m | Added +17.9k |
| Generali Investments CEE, investicni spolecnost, a.s. 0.15% of their portfolio | 105.3k $1.8m | Added +103.3k |
| Nebula Research & Development LLC 0.14% of their portfolio | 98.1k $1.7m | New |
| FORA Capital, LLC 0.18% of their portfolio | 93.2k $1.6m | Added +87.1k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.00% of their portfolio | 91.6k $1.6m | New |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 90.8k $1.6m | Added +41.1k |
| Verition Fund Management LLC 0.01% of their portfolio | 89.9k $1.5m | Added +16.1k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 84.6k $1.4m | Added +470 |