BIIB
Biogen Inc. Common Stock ·
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Biogen Inc. Common Stock (BIIB) is held by 7 tracked hedge fund(s) and traded by 6 member(s) of Congress. Largest tracked holder: PRIMECAP MANAGEMENT CO/CA/.
| Fund | % of portfolio | Shares | Value | Latest activity | Avg buy price | Date |
|---|---|---|---|---|---|---|
| PRIMECAP MANAGEMENT CO/CA/ PRIMECAP MANAGEMENT CO/CA/ |
2.1% | 14.8M | $2.7B | — | $277.41 | 2026-03-31 |
| Employees Provident Fund Board Employees Provident Fund Board |
1.0% | 704K | $129M | NEW (+704K) | $183.33 | 2026-03-31 |
| AustralianSuper Pty Ltd AustralianSuper Pty Ltd |
0.6% | 616K | $113M | ▲ 29% (+139K) | $143.71 | 2026-03-31 |
| Artemis Investment Management LLP Artemis Investment Management LLP |
1.1% | 572K | $105M | ▲ 152% (+345K) | $180.42 | 2026-03-31 |
| CAUSEWAY CAPITAL MANAGEMENT LLC CAUSEWAY CAPITAL MANAGEMENT LLC |
0.6% | 281K | $51M | ▼ 46% (−240K) | $144.06 | 2026-03-31 |
| AEGON ASSET MANAGEMENT UK Plc AEGON ASSET MANAGEMENT UK Plc |
0.6% | 259K | $47M | ▼ 0.5% (−1K) | $148.99 | 2026-03-31 |
| Glenview Capital Management Larry Robbins |
0.3% | 57K | $10M | ▼ 80% (−234K) | $175.99 | 2026-03-31 |
FAQ ▾
Which hedge funds hold BIIB?
Tracked holders include: PRIMECAP MANAGEMENT CO/CA/, Employees Provident Fund Board, AustralianSuper Pty Ltd, Artemis Investment Management LLP.
How much smart money owns BIIB?
7 tracked hedge fund(s) and 6 member(s) of Congress have disclosed positions.
Are members of Congress trading BIIB?
Yes — 6 member(s) have disclosed BIIB trades. See the Congress tab.
Where does this data come from?
SEC 13F filings (funds), Form 4 (insiders) and STOCK Act reports (Congress).
Sourced from SEC 13F, Form 4 & STOCK Act filings · Not investment advice ▾
Ownership from SEC filings; price from market data.
Published by WealthFile · Not investment advice.