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 ($21.1m this quarter). Holder counts are more reliable. Shares outstanding: 93.1m as of 2023-04-27, 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 ≈ $137.81. Options: 31 managers hold calls ($489.0m notional), 28 hold puts ($467.1m).
Trends to Q1 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 376 |
| Q4 2022 | 414 |
| Q1 2023 | 427 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 199 | 169 |
| Q1 2023 | 219 | 183 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $269.5m | $160.2m | 0.59 |
| Q4 2022 | $368.4m | $246.3m | 0.67 |
| Q1 2023 | $489.0m | $467.1m | 0.96 |
Biggest buyers
| FMR LLC | Added | +2.6m |
| JPMORGAN CHASE & CO | Added | +2.5m |
| Boxer Capital, LLC | New | +775.0k |
| TWO SIGMA ADVISERS, LP | Added | +566.1k |
| Avoro Capital Advisors LLC | Added | +475.0k |
| Artisan Partners Limited Partnership | New | +438.2k |
| MORGAN STANLEY | Added | +432.5k |
| TWO SIGMA INVESTMENTS, LP | Added | +405.7k |
| ALLIANCEBERNSTEIN L.P. | Added | +381.5k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +379.5k |
Biggest sellers
| SANDS CAPITAL MANAGEMENT, LLC | Reduced | -1.3m |
| JANUS HENDERSON GROUP PLC | Reduced | -1.1m |
| LORD, ABBETT & CO. LLC | Reduced | -928.7k |
| Point72 Asset Management, L.P. | Reduced | -655.3k |
| Avidity Partners Management LP | Reduced | -639.0k |
| Deep Track Capital, LP | Sold out | -528.2k |
| Camber Capital Management LP | Reduced | -500.0k |
| GOLDMAN SACHS GROUP INC | Reduced | -480.8k |
| PERCEPTIVE ADVISORS LLC | Reduced | -388.4k |
| NATIONAL BANK OF CANADA /FI/ | Reduced | -291.4k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $71.2m516.6k shares |
| CITADEL ADVISORS LLC | Added | $66.6m483.0k shares |
| JPMORGAN CHASE & CO | Added | $51.6m374.1k shares |
| Caption Management, LLC | Added | $43.6m316.4k shares |
| JANE STREET GROUP, LLC | Added | $37.5m272.2k shares |
| Ikarian Capital, LLC | New | $28.3m205.4k shares |
| SIMPLEX TRADING, LLC | Added | $23.2m168.5k shares |
| GROUP ONE TRADING LLC | Reduced | $19.0m138.1k shares |
| Ghost Tree Capital, LLC | New | $17.2m125.0k shares |
| Parallax Volatility Advisers, L.P. | Added | $14.3m103.9k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $95.3m691.6k shares |
| Ikarian Capital, LLC | New | $37.4m271.3k shares |
| Caption Management, LLC | Reduced | $36.9m267.6k shares |
| CITADEL ADVISORS LLC | Added | $35.2m255.7k shares |
| Balyasny Asset Management L.P. | Reduced | $33.8m245.4k shares |
| JANE STREET GROUP, LLC | Added | $31.7m229.7k shares |
| SIMPLEX TRADING, LLC | Added | $28.2m204.3k shares |
| GOLDMAN SACHS GROUP INC | Added | $22.8m165.4k shares |
| GROUP ONE TRADING LLC | Added | $22.6m163.8k shares |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | New | $21.1m153.0k 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)
Insider purchases and sales in Q1 2023
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 2021 | 0 | — | 0 | — | — |
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 2 | $2.3m | 0 | — | — |
| Q1 2022 | 0 | — | 0 | — | — |
| Q2 2022 | 0 | — | 0 | — | — |
| Q3 2022 | 1 | $11.0m | 0 | — | — |
| Q4 2022 | 0 | — | 1 | $94.3k | — |
| Q1 2023 | 0 | — | 0 | — | — |
None reported in Q1 2023.
Holders, Q1 2023
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.03% of their portfolio | 8.1m $1.1bn | Added +79.7k |
| FMR LLC 0.03% of their portfolio | 5.3m $729.0m | Added +2.6m |
| BlackRock Inc. 0.02% of their portfolio | 5.3m $728.1m | Reduced -199.5k |
| JANUS HENDERSON GROUP PLC 0.45% of their portfolio | 4.9m $676.5m | Reduced -1.1m |
| JPMORGAN CHASE & CO 0.07% of their portfolio | 3.7m $510.4m | Added +2.5m |
| Avoro Capital Advisors LLC 7.46% of their portfolio | 3.6m $503.1m | Added +475.0k |
| EcoR1 Capital, LLC 13.31% of their portfolio | 3.0m $413.4m | Unchanged |
| WELLINGTON MANAGEMENT GROUP LLP 0.08% of their portfolio | 2.9m $404.3m | Added +379.5k |
| Bank of New York Mellon Corp 0.06% of their portfolio | 1.9m $263.9m | Reduced -79.1k |
| STATE STREET CORP 0.01% of their portfolio | 1.8m $244.5m | Reduced -167.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 1.3m $173.9m | Added +43.2k |
| PICTET ASSET MANAGEMENT SA 0.21% of their portfolio | 1.2m $167.2m | Added +282.7k |
| LORD, ABBETT & CO. LLC 0.30% of their portfolio | 1.2m $164.1m | Reduced -928.7k |
| TWO SIGMA ADVISERS, LP 0.42% of their portfolio | 1.2m $162.1m | Added +566.1k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.02% of their portfolio | 1.2m $161.5m | Added +334.7k |
| Casdin Capital, LLC 13.21% of their portfolio | 1.2m $159.9m | Reduced -155.0k |
| TWO SIGMA INVESTMENTS, LP 0.45% of their portfolio | 1.1m $151.2m | Added +405.7k |
| DEUTSCHE BANK AG\ 0.08% of their portfolio | 1.0m $137.8m | Added +60.0k |
| AMERICAN CENTURY COMPANIES INC 0.10% of their portfolio | 953.2k $131.4m | Added +270.5k |
| FARALLON CAPITAL MANAGEMENT, L.L.C. 0.76% of their portfolio | 913.3k $125.9m | Reduced -15.6k |
| MORGAN STANLEY 0.01% of their portfolio | 889.5k $122.6m | Added +432.5k |
| SANDS CAPITAL MANAGEMENT, LLC 0.40% of their portfolio | 874.8k $120.6m | Reduced -1.3m |
| ORBIMED ADVISORS LLC 2.36% of their portfolio | 865.1k $119.2m | Reduced -107.2k |
| D. E. Shaw & Co., Inc. 0.19% of their portfolio | 851.7k $117.4m | Added +269.5k |
| FEDERATED HERMES, INC. 0.28% of their portfolio | 816.9k $112.6m | Added +37.5k |
| RENAISSANCE TECHNOLOGIES LLC 0.15% of their portfolio | 806.5k $111.2m | Added +87.6k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.78% of their portfolio | 802.7k $110.6m | Added +51.0k |
| Boxer Capital, LLC 5.25% of their portfolio | 775.0k $106.8m | New |
| NORGES BANK 0.02% of their portfolio | 766.0k $105.6m | Reduced -97.7k |
| GOLDMAN SACHS GROUP INC 0.03% of their portfolio | 758.1k $104.5m | Reduced -480.8k |
| Camber Capital Management LP 3.53% of their portfolio | 750.0k $103.4m | Reduced -500.0k |
| AMERIPRISE FINANCIAL INC 0.03% of their portfolio | 749.2k $103.3m | Added +150.7k |
| ALKEON CAPITAL MANAGEMENT LLC 0.63% of their portfolio | 712.8k $98.2m | Added +39.2k |
| FIRST TRUST ADVISORS LP 0.11% of their portfolio | 689.6k $95.0m | Reduced -18.3k |
| Erste Asset Management GmbH 1.71% of their portfolio | 648.9k $89.3m | Added +34.5k |
| Bellevue Group AG 1.29% of their portfolio | 646.6k $89.1m | Reduced -46.6k |
| Assenagon Asset Management S.A. 0.33% of their portfolio | 609.1k $84.0m | Reduced -123.4k |
| MILLENNIUM MANAGEMENT LLC 0.09% of their portfolio | 582.9k $80.3m | Added +180.9k |
| Thrivent Financial for Lutherans 0.19% of their portfolio | 575.5k $79.3m | Reduced -130.6k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 559.5k $77.1m | Added +176.6k |
| Allspring Global Investments Holdings, LLC 0.12% of their portfolio | 538.4k $74.2m | Added +161.2k |
| Nuveen Asset Management, LLC 0.03% of their portfolio | 531.0k $73.2m | Added +181.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 520.0k $71.7m | Added +3.5k |
| ALLIANCEBERNSTEIN L.P. 0.03% of their portfolio | 490.2k $67.6m | Added +381.5k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.41% of their portfolio | 482.0k $66.4m | Added +6.1k |
| BARCLAYS PLC 0.06% of their portfolio | 453.6k $62.5m | Added +38.6k |
| Rock Springs Capital Management LP 1.46% of their portfolio | 442.5k $61.0m | Added +6.5k |
| Artisan Partners Limited Partnership 0.10% of their portfolio | 438.2k $60.4m | New |
| Avidity Partners Management LP 1.90% of their portfolio | 416.0k $57.3m | Reduced -639.0k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 400.4k $55.2m | Added +8.8k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.12% of their portfolio | 400.4k $55.2m | Reduced -274.6k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 357.2k $49.2m | Added +51.9k |
| Invesco Ltd. 0.01% of their portfolio | 344.6k $47.5m | Added +123.7k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.20% of their portfolio | 294.2k $40.6m | Added +133.3k |
| Tekla Capital Management LLC 1.50% of their portfolio | 285.7k $39.4m | Added +144.7k |
| Capital Research Global Investors 0.01% of their portfolio | 265.9k $36.7m | New |
| PERCEPTIVE ADVISORS LLC 1.06% of their portfolio | 260.9k $36.0m | Reduced -388.4k |
| Mizuho Markets Cayman LP 1.54% of their portfolio | 259.8k $35.8m | New |
| MIZUHO MARKETS AMERICAS LLC 1.54% of their portfolio | 259.8k $35.8m | Added +67.4k |
| CITADEL ADVISORS LLC 0.04% of their portfolio | 253.4k $34.9m | Reduced -152.1k |
| Redmile Group, LLC 1.39% of their portfolio | 231.6k $31.9m | New |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.33% of their portfolio | 229.1k $31.6m | Reduced -32.6k |
| EAGLE ASSET MANAGEMENT INC 0.18% of their portfolio | 221.2k $30.5m | New |
| Logos Global Management LP 4.34% of their portfolio | 220.0k $30.3m | Unchanged |
| Amundi 0.02% of their portfolio | 213.1k $29.3m | Added +187.4k |
| GROUP ONE TRADING LLC 1.32% of their portfolio | 201.9k $27.8m | Added +181.4k |
| UBS Group AG 0.01% of their portfolio | 194.4k $26.8m | Added +31.7k |
| CREDIT SUISSE AG/ 0.03% of their portfolio | 193.2k $26.6m | Reduced -82.5k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 189.6k $26.1m | Reduced -3.3k |
| Nicholas Investment Partners, LP 1.96% of their portfolio | 187.5k $25.8m | Added +97.1k |
| Ensign Peak Advisors, Inc 0.06% of their portfolio | 187.3k $25.8m | Added +40.0k |
| EVENTIDE ASSET MANAGEMENT, LLC 0.47% of their portfolio | 187.3k $25.8m | New |
| MARSHALL WACE, LLP 0.06% of their portfolio | 179.3k $24.7m | Reduced -6.7k |
| Swiss National Bank 0.02% of their portfolio | 170.5k $23.5m | Reduced -19.8k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 1.30% of their portfolio | 168.2k $23.2m | Added +1.2k |
| California Public Employees Retirement System 0.02% of their portfolio | 166.8k $23.0m | Reduced -25.4k |
| Iron Triangle Partners LP 3.18% of their portfolio | 160.0k $22.1m | Added +52.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.05% of their portfolio | 159.0k $21.9m | Added +121.4k |
| Russell Investments Group, Ltd. 0.04% of their portfolio | 158.2k $21.8m | Added +2.4k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 156.7k $21.6m | Added +35.4k |
| TWINBEECH CAPITAL LP 0.39% of their portfolio | 140.7k $19.4m | Added +137.1k |
| JANE STREET GROUP, LLC 0.03% of their portfolio | 140.5k $19.4m | Reduced -33.7k |
| C WorldWide Group Holding A/S 0.26% of their portfolio | 140.3k $19.3m | Added +20.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.03% of their portfolio | 139.8k $19.3m | Added +31.9k |
| Eagle Health Investments LP 3.72% of their portfolio | 138.6k $19.1m | New |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 135.0k $18.6m | Added +18.8k |
| Finepoint Capital LP 6.46% of their portfolio | 122.8k $16.9m | Reduced -8.7k |
| Candriam S.C.A. 0.11% of their portfolio | 122.2k $15.5m | Added +27.1k |
| JENNISON ASSOCIATES LLC 0.02% of their portfolio | 120.3k $16.6m | New |
| Connor, Clark & Lunn Investment Management Ltd. 0.09% of their portfolio | 119.7k $16.5m | Added +3.4k |
| Sofinnova Investments, Inc. 1.11% of their portfolio | 119.1k $16.4m | Reduced -128.9k |
| MOORE CAPITAL MANAGEMENT, LP 0.50% of their portfolio | 116.8k $16.1m | Added +98.8k |
| Public Sector Pension Investment Board 0.12% of their portfolio | 114.0k $15.7m | Reduced -119.0k |
| Cormorant Asset Management, LP 1.00% of their portfolio | 110.0k $15.2m | Reduced -90.0k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 107.2k $14.8m | Added +6.4k |
| SEI INVESTMENTS CO 0.03% of their portfolio | 106.8k $14.7m | Added +68.4k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.02% of their portfolio | 105.5k $14.5m | Reduced -1.4k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 102.9k $14.2m | Added +96.8k |
| Squarepoint Ops LLC 0.10% of their portfolio | 100.6k $13.9m | Reduced -105.9k |
| Legal & General Group Plc 0.00% of their portfolio | 99.8k $13.8m | Added +18.8k |