Position in BIIB
as of Jun 30, 2026
· filed Sep 2, 2026
Position Value
$90,389,997
+$65,073,409 QoQ
Shares Held
418,356
+203.0% QoQ
Ownership
0.283%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
#44
of 1,037 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
$68,058,900
CallShares
315,000
PutValue
$28,995,252
PutShares
134,200
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, 2026CITADEL ADVISORS LLC holds $3,979,998,649 across 21 Drug Manufacturers - General names. BIIB ranks #10 (2.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | LLY |
ELI LILLY & Co
|
945,456 | $1,134,008,383 | |
| 2 | ABBV |
AbbVie Inc.
|
3,169,783 | $797,644,194 | |
| 3 | GILD |
Gilead Sciences, Inc.
|
3,480,444 | $439,719,294 | |
| 4 | JNJ |
Johnson & Johnson
|
1,500,832 | $381,166,302 | |
| 5 | AMGN |
Amgen Inc
|
703,984 | $254,926,685 | |
| 6 | MRK |
Merck & Co., Inc.
|
1,933,667 | $248,476,209 | |
| 7 | AZN |
Astrazeneca PLC
|
970,043 | $183,939,553 | |
| 8 | PFE |
Pfizer Inc
|
6,191,186 | $149,083,758 |
All Filings in BIIB
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $90,389,997 | 418,356 | Shares | Defined | 2026-09-02 | |
| 2026-06-30 | $68,058,900 | 315,000 | Call | Defined | 2026-09-02 | |
| 2026-06-30 | $28,995,252 | 134,200 | Put | Defined | 2026-09-02 | |
| 2026-03-31 | $16,994,691 | 92,700 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $54,980,667 | 299,900 | Call | Defined | 2026-05-15 | |
| 2026-03-31 | $25,316,588 | 138,093 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $71,627,930 | 407,000 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $7,114,219 | 40,424 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $28,510,380 | 162,000 | Put | Defined | 2026-02-17 | |
| 2025-09-30 | $22,132,640 | 158,000 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $52,211,738 | 372,728 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $33,787,296 | 241,200 | Call | Defined | 2025-11-14 | |
| 2025-06-30 | $59,416,629 | 473,100 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $76,432,818 | 608,590 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $33,130,642 | 263,800 | Put | Defined | 2025-08-14 | |
| 2025-03-31 | $74,134,985 | 541,764 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $28,202,724 | 206,100 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $136,621,056 | 998,400 | Put | Defined | 2025-05-15 | |
| 2024-12-31 | $26,363,408 | 172,400 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $36,502,004 | 238,700 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $23,497,687 | 153,660 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $29,289,224 | 151,100 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $72,179,424 | 372,366 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $20,895,952 | 107,800 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $36,720,288 | 158,400 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $26,983,848 | 116,400 | Call | Defined | 2024-08-14 | |
| 2024-03-31 | $32,193,127 | 149,298 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $28,355,345 | 131,500 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $26,738,120 | 124,000 | Put | Defined | 2024-05-15 | |
| 2023-12-31 | $62,777,602 | 242,600 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $1,361,388 | 5,261 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $47,484,295 | 183,500 | Put | Defined | 2024-02-14 | |
| 2023-09-30 | $20,081,733 | 78,136 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $76,152,063 | 296,300 | Put | Defined | 2023-11-14 | |
| 2023-09-30 | $63,532,872 | 247,200 | Call | Defined | 2023-11-14 | |
| 2023-06-30 | $105,907,230 | 371,800 | Call | Defined | 2023-08-14 | |
| 2023-06-30 | $106,989,660 | 375,600 | Put | Defined | 2023-08-14 | |
| 2023-03-31 | $148,718,247 | 534,900 | Put | Defined | 2023-05-15 | |
| 2023-03-31 | $145,826,735 | 524,500 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $68,140,703 | 245,084 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $274,510,796 | 991,300 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $242,471,152 | 875,600 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $68,624,098 | 247,812 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $66,583,926 | 249,378 | Shares | Defined | 2022-11-14 | |
| 2022-09-30 | $353,694,900 | 1,324,700 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $373,346,100 | 1,398,300 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $113,125,518 | 554,700 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $119,162,142 | 584,300 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $42,509,865 | 208,443 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $100,056,060 | 475,100 | Put | Defined | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||