Position in BIIB
as of Mar 31, 2026
· filed May 13, 2026
Position Value
$2,928,623,591
+$321,970,595 QoQ
Shares Held
15,974,601
+7.9% QoQ
Ownership
10.8%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2024
7 quarters on record
Voting authority
Sole 90.82616779136879.ToString("F0")%
Shared 0.ToString("F0")%
None 9.173832208631202.ToString("F0")%
Common Shares in BIIB Over Time
Shares Held
Position Value (USD)
Position in Drug Manufacturers - General
Healthcare · as of Mar 31, 2026BlackRock, Inc. holds $235,197,977,777 across 20 Drug Manufacturers - General names. BIIB ranks #9 (1.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | LLY |
ELI LILLY & Co
|
66,380,842 | $61,055,107,035 | |
| 2 | JNJ |
Johnson & Johnson
|
213,385,546 | $52,159,962,852 | |
| 3 | ABBV |
AbbVie Inc.
|
150,698,125 | $32,775,335,197 | |
| 4 | MRK |
Merck & Co., Inc.
|
225,830,330 | $27,165,130,383 | |
| 5 | GILD |
Gilead Sciences, Inc.
|
119,010,973 | $16,586,559,291 | |
| 6 | AMGN |
Amgen Inc
|
47,100,472 | $16,572,301,062 | |
| 7 | PFE |
Pfizer Inc
|
498,257,550 | $13,991,071,992 | |
| 8 | BMY |
Bristol Myers Squibb Co
|
171,682,888 | $10,412,567,149 |
All Filings in BIIB
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $2,928,623,591 | 15,974,601 | Shares | Sole | 2026-05-13 | |
| 2025-12-31 | $2,606,652,996 | 14,811,370 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $2,068,134,388 | 14,763,952 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $1,702,430,962 | 13,555,466 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $2,081,478,157 | 15,211,036 | Shares | Sole | 2025-05-02 | |
| 2024-12-31 | $2,366,239,723 | 15,473,710 | Shares | Sole | 2025-02-07 | |
| 2024-09-30 | $2,974,870,416 | 15,347,041 | Shares | Sole | 2024-11-13 | |
| No filing history on record for this holder in this stock. | ||||||