Position in BIIB
as of Jun 30, 2026
· filed Aug 3, 2026
Position Value
$30,087,003
+$11,839,802 QoQ
Shares Held
139,253
+39.9% QoQ
Ownership
0.094%
of shares outstanding
% of Portfolio
0.44%
of 13F equity value
Holder Rank
#84
of 1,036 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in BIIB Over Time
Shares Held
Position Value (USD)
Derivatives in BIIB
reported options exposure · as of Jun 30, 2026CallValue
$6,784,284
CallShares
31,400
PutValue
$7,216,404
PutShares
33,400
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 Drug Manufacturers - General
Healthcare · as of Jun 30, 2026Walleye Trading LLC holds $52,377,864 across 7 Drug Manufacturers - General names. BIIB ranks #1 (57.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BIIB |
Biogen Inc.
This page
|
139,253 | $30,087,003 | |
| 2 | NVO |
Novo Nordisk A S
|
188,647 | $9,043,737 | |
| 3 | MRK |
Merck & Co., Inc.
|
52,971 | $6,806,773 | |
| 4 | AZN |
Astrazeneca PLC
|
21,638 | $4,102,997 | |
| 5 | ABBV |
AbbVie Inc.
|
8,267 | $2,080,307 | |
| 6 | GSK |
GSK plc
|
3,522 | $184,623 | |
| 7 | AMGN |
Amgen Inc
|
200 | $72,424 |
All Filings in BIIB
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50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $7,216,404 | 33,400 | Put | Sole | 2026-08-03 | |
| 2026-06-30 | $6,784,284 | 31,400 | Call | Sole | 2026-08-03 | |
| 2026-06-30 | $30,087,003 | 139,253 | Shares | Sole | 2026-08-03 | |
| 2026-03-31 | $2,108,295 | 11,500 | Call | Sole | 2026-05-11 | |
| 2026-03-31 | $18,247,201 | 99,532 | Shares | Sole | 2026-05-11 | |
| 2026-03-31 | $1,154,979 | 6,300 | Put | Sole | 2026-05-11 | |
| 2025-12-31 | $16,810,916 | 95,522 | Shares | Sole | 2026-02-13 | |
| 2025-12-31 | $3,273,414 | 18,600 | Put | Sole | 2026-02-13 | |
| 2025-12-31 | $6,071,655 | 34,500 | Call | Sole | 2026-02-13 | |
| 2025-09-30 | $1,891,080 | 13,500 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $448,256 | 3,200 | Put | Sole | 2025-11-14 | |
| 2025-06-30 | $1,456,844 | 11,600 | Put | Sole | 2025-08-13 | |
| 2025-06-30 | $2,436,446 | 19,400 | Call | Sole | 2025-08-13 | |
| 2025-03-31 | $1,531,376 | 11,191 | Shares | Sole | 2025-05-14 | |
| 2025-03-31 | $4,447,300 | 32,500 | Call | Sole | 2025-05-14 | |
| 2025-03-31 | $5,637,808 | 41,200 | Put | Sole | 2025-05-14 | |
| 2024-12-31 | $1,620,952 | 10,600 | Put | Sole | 2025-02-13 | |
| 2024-12-31 | $2,309,092 | 15,100 | Call | Sole | 2025-02-13 | |
| 2024-09-30 | $2,015,936 | 10,400 | Call | Sole | 2024-11-14 | |
| 2024-09-30 | $3,315,051 | 17,102 | Shares | Sole | 2024-11-14 | |
| 2024-09-30 | $3,547,272 | 18,300 | Put | Sole | 2024-11-14 | |
| 2024-06-30 | $2,897,750 | 12,500 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $4,798,674 | 20,700 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $3,208,156 | 13,839 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $33,853 | 157 | Shares | Sole | 2024-05-15 | |
| 2024-03-31 | $905,646 | 4,200 | Put | Sole | 2024-05-15 | |
| 2024-03-31 | $6,167,018 | 28,600 | Call | Sole | 2024-05-15 | |
| 2023-12-31 | $7,685,469 | 29,700 | Put | Sole | 2024-02-14 | |
| 2023-12-31 | $6,339,865 | 24,500 | Call | Sole | 2024-02-14 | |
| 2023-09-30 | $4,420,572 | 17,200 | Call | Sole | 2023-11-21 | |
| 2023-09-30 | $8,918,247 | 34,700 | Put | Sole | 2023-11-21 | |
| 2023-06-30 | $5,896,395 | 20,700 | Call | Sole | 2023-08-14 | |
| 2023-06-30 | $1,936,980 | 6,800 | Shares | Sole | 2023-08-14 | |
| 2023-06-30 | $10,596,420 | 37,200 | Put | Sole | 2023-08-14 | |
| 2023-03-31 | $10,731,958 | 38,600 | Call | Sole | 2023-05-15 | |
| 2023-03-31 | $5,061,258 | 18,204 | Shares | Sole | 2023-05-15 | |
| 2023-03-31 | $18,266,571 | 65,700 | Put | Sole | 2023-05-15 | |
| 2022-12-31 | $22,292,060 | 80,500 | Call | Sole | 2023-02-14 | |
| 2022-12-31 | $40,402,628 | 145,900 | Put | Sole | 2023-02-14 | |
| 2022-09-30 | $37,994,100 | 142,300 | Put | Sole | 2022-11-14 | |
| 2022-09-30 | $26,139,300 | 97,900 | Call | Sole | 2022-11-14 | |
| 2022-09-30 | $403,437 | 1,511 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $5,984,415 | 29,344 | Shares | Sole | 2022-08-08 | |
| 2022-06-30 | $27,695,052 | 135,800 | Put | Sole | 2022-08-08 | |
| 2022-06-30 | $14,806,044 | 72,600 | Call | Sole | 2022-08-08 | |
| 2022-03-31 | $4,254,120 | 20,200 | Call | Sole | 2022-05-16 | |
| 2022-03-31 | $16,616,340 | 78,900 | Put | Sole | 2022-05-16 | |
| 2022-03-31 | $4,003,716 | 19,011 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $13,747,416 | 57,300 | Put | Sole | 2022-02-14 | |
| 2021-12-31 | $1,170,089 | 4,877 | Shares | Sole | 2022-02-14 | |
| No filing history on record for this holder in this stock. | ||||||