Hudson Bay Capital Management LP
Position in SRPT — Sarepta Therapeutics, Inc.
CIK 1393825
STAMFORD, CT
Position in SRPT
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$5,657,600
-$260,400 QoQ
Shares Held
260,000
-5.5% QoQ
Ownership
0.246%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2021
16 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in SRPT Over Time
Shares Held
Position Value (USD)
Derivatives in SRPT
reported options exposure · as of Mar 31, 2026CallValue
$1,088,000
CallShares
50,000
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Biotechnology
Healthcare · as of Mar 31, 2026Hudson Bay Capital Management LP holds $537,145,014 across 151 Biotechnology names. SRPT ranks #26 (1.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BMRN |
Biomarin Pharmaceutical Inc
|
974,776 | $55,065,096 | |
| 2 | APLS |
Apellis Pharmaceuticals, Inc.
|
1,190,416 | $47,890,435 | |
| 3 | REGN |
Regeneron Pharmaceuticals, Inc.
|
32,001 | $24,725,252 | |
| 4 | BNTX |
BioNTech SE
|
275,000 | $24,442,000 | |
| 5 | IONS |
Ionis Pharmaceuticals Inc
|
295,100 | $22,159,059 | |
| 6 | ARGX |
Argenx SE
|
30,000 | $21,907,500 | |
| 7 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
45,000 | $20,094,300 | |
| 8 | IMCR |
Immunocore Holdings plc
|
633,174 | $19,090,196 |
All Filings in SRPT
Export CSV
22 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $5,657,600 | 260,000 | Shares | Sole | 2026-05-13 | |
| 2026-03-31 | $1,088,000 | 50,000 | Call | Sole | 2026-05-13 | |
| 2025-12-31 | $1,076,000 | 50,000 | Call | Sole | 2026-02-13 | |
| 2025-12-31 | $5,918,000 | 275,000 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $963,500 | 50,000 | Call | Sole | 2025-12-15 | |
| 2025-09-30 | $3,854,057 | 200,003 | Shares | Sole | 2025-12-15 | |
| 2025-06-30 | $1,629,630 | 95,300 | Call | Sole | 2025-08-18 | |
| 2025-06-30 | $342,000 | 20,000 | Put | Sole | 2025-08-18 | |
| 2025-06-30 | $4,584,510 | 268,100 | Shares | Sole | 2025-08-18 | |
| 2025-03-31 | $12,779,955 | 200,250 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $7,903,350 | 65,000 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $8,117,850 | 65,000 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $1,185,000 | 7,500 | Shares | Sole | 2024-08-14 | |
| 2023-12-31 | $8,505,897 | 88,208 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $6,073,122 | 50,100 | Call | Sole | 2023-12-07 | |
| 2023-09-30 | $5,454,900 | 45,000 | Shares | Sole | 2023-12-07 | |
| 2022-12-31 | $6,139,500 | 47,380 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $18,791,800 | 170,000 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $14,055,000 | 187,500 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $3,320,100 | 42,500 | Shares | Sole | 2022-05-16 | |
| 2021-06-30 | $2,915,250 | 37,500 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $2,086,840 | 28,000 | Shares | Sole | 2021-05-14 | |
| No filing history on record for this holder in this stock. | ||||||