Position in BIIB
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$2,470,645
+$551,364 QoQ
Shares Held
11,435
+9.2% QoQ
Ownership
0.008%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#323
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
$41,289,066
CallShares
191,100
PutValue
$47,122,686
PutShares
218,100
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, 2026JANE STREET GROUP, LLC holds $1,179,497,111 across 15 Drug Manufacturers - General names. BIIB ranks #12 (0.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | LLY |
ELI LILLY & Co
|
458,318 | $549,720,403 | |
| 2 | GILD |
Gilead Sciences, Inc.
|
1,246,545 | $157,488,493 | |
| 3 | MRK |
Merck & Co., Inc.
|
1,121,026 | $144,051,841 | |
| 4 | JNJ |
Johnson & Johnson
|
382,411 | $97,120,920 | |
| 5 | ABBV |
AbbVie Inc.
|
349,226 | $87,879,230 | |
| 6 | PFE |
Pfizer Inc
|
3,234,701 | $77,891,599 | |
| 7 | GSK |
GSK plc
|
551,413 | $28,905,069 | |
| 8 | AMGN |
Amgen Inc
|
34,309 | $12,423,973 |
All Filings in BIIB
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $47,122,686 | 218,100 | Put | Defined | 2026-08-14 | |
| 2026-06-30 | $2,470,645 | 11,435 | Shares | Defined | 2026-08-14 | |
| 2026-06-30 | $41,289,066 | 191,100 | Call | Defined | 2026-08-14 | |
| 2026-03-31 | $31,477,761 | 171,700 | Put | Defined | 2026-05-12 | |
| 2026-03-31 | $19,927,971 | 108,700 | Call | Defined | 2026-05-12 | |
| 2026-03-31 | $1,919,281 | 10,469 | Shares | Defined | 2026-05-12 | |
| 2025-12-31 | $33,420,501 | 189,900 | Put | Defined | 2026-02-12 | |
| 2025-12-31 | $4,142,627 | 23,539 | Shares | Defined | 2026-02-12 | |
| 2025-12-31 | $61,842,886 | 351,400 | Call | Defined | 2026-02-12 | |
| 2025-09-30 | $748,026 | 5,340 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $29,094,616 | 207,700 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $53,720,680 | 383,500 | Call | Defined | 2025-11-14 | |
| 2025-06-30 | $40,565,570 | 323,000 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $4,149,619 | 33,041 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $39,246,875 | 312,500 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $5,097,836 | 37,254 | Shares | Defined | 2025-05-19 | |
| 2025-03-31 | $23,673,320 | 173,000 | Call | Defined | 2025-05-19 | |
| 2025-03-31 | $28,777,452 | 210,300 | Put | Defined | 2025-05-19 | |
| 2024-12-31 | $30,987,402 | 202,638 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $11,361,956 | 74,300 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $22,769,788 | 148,900 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $21,378,418 | 110,289 | Shares | Defined | 2024-11-15 | |
| 2024-09-30 | $12,657,752 | 65,300 | Put | Defined | 2024-11-15 | |
| 2024-09-30 | $14,441,080 | 74,500 | Call | Defined | 2024-11-15 | |
| 2024-06-30 | $41,302,441 | 178,166 | Shares | Defined | 2024-08-15 | |
| 2024-03-31 | $18,542,885 | 85,994 | Shares | Defined | 2024-05-16 | |
| 2023-12-31 | $52,967,113 | 204,688 | Shares | Defined | 2024-02-15 | |
| 2023-09-30 | $12,041,946 | 46,854 | Shares | Defined | 2023-11-15 | |
| 2023-06-30 | $38,429,967 | 134,913 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $13,876,475 | 49,910 | Shares | Defined | 2023-05-16 | |
| 2022-12-31 | $57,483,330 | 207,581 | Shares | Defined | 2023-02-15 | |
| 2022-09-30 | $81,312,180 | 304,540 | Shares | Defined | 2022-11-15 | |
| 2022-06-30 | $38,689,457 | 189,710 | Shares | Defined | 2022-08-16 | |
| 2022-03-31 | $66,781,260 | 317,100 | Put | Defined | 2022-05-17 | |
| 2022-03-31 | $38,641,519 | 183,483 | Shares | Defined | 2022-05-17 | |
| 2022-03-31 | $50,649,300 | 240,500 | Call | Defined | 2022-05-17 | |
| 2021-12-31 | $80,661,104 | 336,200 | Put | Defined | 2022-02-15 | |
| 2021-12-31 | $38,504,999 | 160,491 | Shares | Defined | 2022-02-15 | |
| 2021-12-31 | $76,198,592 | 317,600 | Call | Defined | 2022-02-15 | |
| 2021-09-30 | $135,410,715 | 478,500 | Call | Defined | 2021-11-16 | |
| 2021-09-30 | $94,518,660 | 334,000 | Put | Defined | 2021-11-16 | |
| 2021-09-30 | $26,649,167 | 94,170 | Shares | Defined | 2021-11-16 | |
| 2021-06-30 | $225,906,548 | 652,400 | Call | Defined | 2021-08-16 | |
| 2021-06-30 | $28,631,679 | 82,686 | Shares | Defined | 2021-08-16 | |
| 2021-06-30 | $135,183,808 | 390,400 | Put | Defined | 2021-08-16 | |
| 2021-03-31 | $86,442,750 | 309,000 | Call | Defined | 2021-05-18 | |
| 2021-03-31 | $34,323,925 | 122,695 | Shares | Defined | 2021-05-18 | |
| 2021-03-31 | $62,999,700 | 225,200 | Put | Defined | 2021-05-18 | |
| 2020-12-31 | $66,381,546 | 271,100 | Call | Defined | 2021-02-17 | |
| 2020-12-31 | $118,438,782 | 483,700 | Put | Defined | 2021-02-17 | |
| No filing history on record for this holder in this stock. | ||||||