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 ($19.9m this quarter). Holder counts are more reliable. Shares outstanding: 93.3m as of 2023-07-28, 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 ≈ $114.55. Options: 29 managers hold calls ($276.3m notional), 27 hold puts ($402.2m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 376 |
| Q4 2022 | 414 |
| Q1 2023 | 427 |
| Q2 2023 | 406 |
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 |
| Q2 2023 | 204 | 205 |
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 |
| Q2 2023 | $276.3m | $402.2m | 1.46 |
Biggest buyers
| Avoro Capital Advisors LLC | Added | +977.9k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +921.5k |
| JPMORGAN CHASE & CO | Added | +701.1k |
| EcoR1 Capital, LLC | Added | +661.3k |
| CITADEL ADVISORS LLC | Added | +637.3k |
| JANUS HENDERSON GROUP PLC | Added | +539.5k |
| Bank of New York Mellon Corp | Added | +518.0k |
| VANGUARD GROUP INC | Added | +418.5k |
| FARALLON CAPITAL MANAGEMENT, L.L.C. | Added | +291.9k |
| Capital Research Global Investors | Added | +291.4k |
Biggest sellers
| FMR LLC | Reduced | -3.5m |
| SANDS CAPITAL MANAGEMENT, LLC | Sold out | -874.8k |
| D. E. Shaw & Co., Inc. | Reduced | -576.8k |
| Thrivent Financial for Lutherans | Reduced | -517.1k |
| Bellevue Group AG | Reduced | -446.4k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -414.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -390.5k |
| LORD, ABBETT & CO. LLC | Reduced | -385.3k |
| AMERICAN CENTURY COMPANIES INC | Reduced | -359.9k |
| Camber Capital Management LP | Reduced | -350.0k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $62.0m541.6k shares |
| CITADEL ADVISORS LLC | Reduced | $31.6m276.1k shares |
| Caption Management, LLC | Reduced | $29.9m261.4k shares |
| LMR Partners LLP | New | $25.2m219.9k shares |
| Twin Tree Management, LP | New | $24.3m212.4k shares |
| SIMPLEX TRADING, LLC | Added | $23.1m201.9k shares |
| GROUP ONE TRADING LLC | Reduced | $15.7m136.7k shares |
| Balyasny Asset Management L.P. | Added | $14.5m126.9k shares |
| SPHERA FUNDS MANAGEMENT LTD. | New | $9.0m78.3k shares |
| JANE STREET GROUP, LLC | Reduced | $6.5m56.6k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $129.3m1.1m shares |
| GROUP ONE TRADING LLC | Added | $42.5m370.9k shares |
| LMR Partners LLP | New | $38.8m339.0k shares |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | Added | $37.5m327.7k shares |
| SIMPLEX TRADING, LLC | Added | $35.5m310.3k shares |
| CITADEL ADVISORS LLC | Reduced | $24.9m217.7k shares |
| Caption Management, LLC | Reduced | $22.1m192.6k shares |
| Balyasny Asset Management L.P. | Reduced | $15.5m135.4k shares |
| Ikarian Capital, LLC | Reduced | $14.0m122.1k shares |
| JANE STREET GROUP, LLC | Reduced | $13.2m115.5k 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 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 |
|---|---|---|---|---|---|
| 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 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
None reported in Q2 2023.
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.02% of their portfolio | 8.5m $977.0m | Added +418.5k |
| BlackRock Inc. 0.02% of their portfolio | 5.5m $630.3m | Added +220.8k |
| JANUS HENDERSON GROUP PLC 0.39% of their portfolio | 5.4m $623.9m | Added +539.5k |
| Avoro Capital Advisors LLC 7.19% of their portfolio | 4.6m $530.0m | Added +977.9k |
| JPMORGAN CHASE & CO 0.06% of their portfolio | 4.4m $504.4m | Added +701.1k |
| WELLINGTON MANAGEMENT GROUP LLP 0.08% of their portfolio | 3.9m $441.5m | Added +921.5k |
| EcoR1 Capital, LLC 11.05% of their portfolio | 3.7m $419.2m | Added +661.3k |
| Bank of New York Mellon Corp 0.06% of their portfolio | 2.4m $278.6m | Added +518.0k |
| STATE STREET CORP 0.01% of their portfolio | 1.9m $219.2m | Added +139.8k |
| FMR LLC 0.02% of their portfolio | 1.8m $206.6m | Reduced -3.5m |
| GEODE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 1.4m $159.0m | Added +126.1k |
| TWO SIGMA INVESTMENTS, LP 0.39% of their portfolio | 1.3m $147.6m | Added +192.1k |
| TWO SIGMA ADVISERS, LP 0.37% of their portfolio | 1.3m $144.2m | Added +83.7k |
| FARALLON CAPITAL MANAGEMENT, L.L.C. 0.82% of their portfolio | 1.2m $138.0m | Added +291.9k |
| DEUTSCHE BANK AG\ 0.07% of their portfolio | 1.1m $126.7m | Added +106.6k |
| Casdin Capital, LLC 10.16% of their portfolio | 1.0m $116.2m | Reduced -145.0k |
| MORGAN STANLEY 0.01% of their portfolio | 976.4k $111.8m | Added +86.8k |
| GOLDMAN SACHS GROUP INC 0.03% of their portfolio | 969.3k $111.0m | Added +211.2k |
| FEDERATED HERMES, INC. 0.27% of their portfolio | 964.9k $110.5m | Added +148.0k |
| PICTET ASSET MANAGEMENT SA 0.13% of their portfolio | 953.0k $109.1m | Reduced -260.4k |
| CITADEL ADVISORS LLC 0.11% of their portfolio | 890.7k $102.0m | Added +637.3k |
| NORGES BANK 0.02% of their portfolio | 830.6k $95.1m | Added +64.6k |
| LORD, ABBETT & CO. LLC 0.16% of their portfolio | 805.1k $92.2m | Reduced -385.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 780.9k $89.4m | Reduced -390.5k |
| AMERIPRISE FINANCIAL INC 0.03% of their portfolio | 766.2k $87.7m | Added +16.9k |
| Assenagon Asset Management S.A. 0.33% of their portfolio | 725.8k $83.1m | Added +116.6k |
| Erste Asset Management GmbH 1.45% of their portfolio | 720.9k $82.3m | Added +72.0k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.16% of their portfolio | 655.0k $75.0m | Added +254.7k |
| ORBIMED ADVISORS LLC 1.37% of their portfolio | 654.0k $74.9m | Reduced -211.1k |
| RENAISSANCE TECHNOLOGIES LLC 0.11% of their portfolio | 642.1k $73.5m | Reduced -164.4k |
| FIRST TRUST ADVISORS LP 0.08% of their portfolio | 604.3k $69.2m | Reduced -85.3k |
| Boxer Capital, LLC 3.19% of their portfolio | 600.0k $68.7m | Reduced -175.0k |
| AMERICAN CENTURY COMPANIES INC 0.05% of their portfolio | 593.4k $68.0m | Reduced -359.9k |
| Nuveen Asset Management, LLC 0.02% of their portfolio | 588.0k $67.3m | Added +57.0k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.42% of their portfolio | 575.8k $65.9m | Reduced -226.9k |
| Capital Research Global Investors 0.02% of their portfolio | 557.4k $63.8m | Added +291.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 554.0k $63.4m | Added +34.1k |
| Allspring Global Investments Holdings, LLC 0.10% of their portfolio | 542.9k $62.2m | Added +4.5k |
| ALKEON CAPITAL MANAGEMENT LLC 0.35% of their portfolio | 508.8k $58.3m | Reduced -204.0k |
| ALLIANCEBERNSTEIN L.P. 0.02% of their portfolio | 501.3k $57.4m | Added +11.1k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 449.1k $51.4m | Reduced -110.4k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.29% of their portfolio | 445.6k $51.0m | Reduced -36.4k |
| Artisan Partners Limited Partnership 0.08% of their portfolio | 440.9k $50.5m | Added +2.7k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 432.7k $49.6m | Added +75.5k |
| Rock Springs Capital Management LP 1.16% of their portfolio | 425.0k $48.7m | Reduced -17.5k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 410.6k $47.0m | Added +10.1k |
| Camber Capital Management LP 1.49% of their portfolio | 400.0k $45.8m | Reduced -350.0k |
| BARCLAYS PLC 0.03% of their portfolio | 398.5k $45.6m | Reduced -55.1k |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC 2.03% of their portfolio | 348.6k $39.9m | Added +180.4k |
| Invesco Ltd. 0.01% of their portfolio | 341.6k $39.1m | Reduced -3.0k |
| Point72 Asset Management, L.P. 0.13% of their portfolio | 329.4k $37.7m | Added +280.9k |
| Amundi 0.02% of their portfolio | 305.5k $34.7m | Added +92.3k |
| Logos Global Management LP 4.75% of their portfolio | 300.0k $34.4m | Added +80.0k |
| Avidity Partners Management LP 1.19% of their portfolio | 297.5k $34.1m | Reduced -118.5k |
| Fiera Capital Corp 0.09% of their portfolio | 282.4k $32.3m | New |
| D. E. Shaw & Co., Inc. 0.05% of their portfolio | 274.9k $31.5m | Reduced -576.8k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.04% of their portfolio | 235.4k $27.0m | Added +95.5k |
| CREDIT SUISSE AG/ 0.03% of their portfolio | 224.8k $25.7m | Added +31.7k |
| EAGLE ASSET MANAGEMENT INC 0.14% of their portfolio | 217.9k $25.0m | Reduced -3.3k |
| UBS Group AG 0.01% of their portfolio | 216.3k $24.8m | Added +21.9k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 216.2k $24.8m | Added +113.3k |
| Bellevue Group AG 0.33% of their portfolio | 200.2k $22.9m | Reduced -446.4k |
| Ensign Peak Advisors, Inc 0.05% of their portfolio | 198.1k $22.7m | Added +10.8k |
| SAMLYN CAPITAL, LLC 0.39% of their portfolio | 194.4k $22.3m | New |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 191.2k $21.9m | Added +56.1k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 182.8k $20.9m | Reduced -6.8k |
| Tekla Capital Management LLC 0.80% of their portfolio | 179.4k $20.5m | Reduced -106.2k |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 168.9k $19.3m | Reduced -414.0k |
| California Public Employees Retirement System 0.02% of their portfolio | 168.1k $19.3m | Added +1.3k |
| GROUP ONE TRADING LLC 0.82% of their portfolio | 167.8k $19.2m | Reduced -34.1k |
| PFM Health Sciences, LP 0.76% of their portfolio | 165.8k $19.0m | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 164.8k $18.9m | Added +78.1k |
| Swiss National Bank 0.01% of their portfolio | 162.8k $18.6m | Reduced -7.7k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 156.7k $21.6m | Unchanged |
| JANE STREET GROUP, LLC 0.02% of their portfolio | 142.9k $16.4m | Added +2.4k |
| C WorldWide Group Holding A/S 0.21% of their portfolio | 140.3k $16.1m | Unchanged |
| JENNISON ASSOCIATES LLC 0.01% of their portfolio | 137.2k $15.7m | Added +17.0k |
| Russell Investments Group, Ltd. 0.03% of their portfolio | 135.6k $15.5m | Reduced -22.6k |
| Cormorant Asset Management, LP 0.85% of their portfolio | 130.0k $14.9m | Added +20.0k |
| Finepoint Capital LP 4.97% of their portfolio | 125.5k $14.4m | Added +2.7k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 123.9k $14.2m | Added +16.7k |
| GREAT POINT PARTNERS LLC 2.84% of their portfolio | 123.6k $14.2m | New |
| EVENTIDE ASSET MANAGEMENT, LLC 0.24% of their portfolio | 122.6k $14.0m | Reduced -64.6k |
| Public Sector Pension Investment Board 0.09% of their portfolio | 114.0k $13.1m | Unchanged |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.12% of their portfolio | 109.3k $12.5m | Reduced -119.8k |
| TOBAM 0.92% of their portfolio | 106.8k $12.2m | Added +94.1k |
| Candriam S.C.A. 0.08% of their portfolio | 100.0k $11.5m | Reduced -22.2k |
| Connor, Clark & Lunn Investment Management Ltd. 0.06% of their portfolio | 98.1k $11.2m | Reduced -21.5k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.05% of their portfolio | 98.0k $11.2m | Reduced -196.2k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 97.9k $12.9m | Added +62.9k |
| Eagle Health Investments LP 2.08% of their portfolio | 97.3k $11.1m | Reduced -41.3k |
| VAN ECK ASSOCIATES CORP 0.02% of their portfolio | 96.8k $11.1m | Added +4.4k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.02% of their portfolio | 95.8k $11.0m | Reduced -9.6k |
| PINNACLE ASSOCIATES LTD 0.19% of their portfolio | 95.4k $10.9m | Reduced -2.1k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 95.0k $10.9m | Reduced -11.7k |
| Palo Alto Investors LP 0.87% of their portfolio | 94.0k $10.8m | New |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.02% of their portfolio | 91.9k $10.5m | Added +2.8k |
| Legal & General Group Plc 0.00% of their portfolio | 91.2k $10.4m | Reduced -8.6k |
| Mirae Asset Global Investments Co., Ltd. 0.02% of their portfolio | 91.1k $10.4m | Reduced -1.4k |
| Schonfeld Strategic Advisors LLC 0.09% of their portfolio | 90.0k $10.3m | Added +77.8k |