Position in BIIB
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$25,798,014
-$6,508,646 QoQ
Shares Held
140,719
-23.3% QoQ
Ownership
0.095%
of shares outstanding
% of Portfolio
4.02%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2020
22 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in BIIB Over Time
Shares Held
Position Value (USD)
Position in Drug Manufacturers - General
Healthcare · as of Mar 31, 2026Palo Alto Investors LP holds $25,798,014 across 1 Drug Manufacturers - General name. BIIB ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BIIB |
Biogen Inc.
This page
|
140,719 | $25,798,014 |
All Filings in BIIB
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22 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $25,798,014 | 140,719 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $32,306,660 | 183,571 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $26,007,392 | 185,661 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $25,841,272 | 205,759 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $28,041,663 | 204,923 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $29,077,432 | 190,148 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $44,373,077 | 228,916 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $67,007,571 | 289,050 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $62,523,643 | 289,958 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $98,440,507 | 380,417 | Shares | Sole | 2024-02-15 | |
| 2023-09-30 | $97,993,286 | 381,282 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $108,608,177 | 381,282 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $106,007,834 | 381,282 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $105,252,307 | 380,082 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $96,381,927 | 360,981 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $73,618,465 | 360,981 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $76,022,598 | 360,981 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $92,369,200 | 385,000 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $102,329,184 | 361,600 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $125,211,232 | 361,600 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $96,010,200 | 343,200 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $57,370,698 | 234,300 | Shares | Sole | 2021-02-16 | |
| No filing history on record for this holder in this stock. | ||||||