13FBIOGEN INC (BIIB)
4 tracked managers currently hold BIIB on their latest filing. Change is versus that manager’s previous filing. Reported as of quarter end, filed up to ~45 days later, not live positions.
Sort: Size Weight change
Sorted by reported value on the latest filing.
| Manager | Period | Change | Value | Weight | Prev weight | Shares | Δ shares |
|---|---|---|---|---|---|---|---|
| CITADEL ADVISORS LLC | Q2 2026 | ADD | $90.4M | 0.1 % | 0.0 % | 418,356 | +280,263 |
| Point72 Asset Management, L.P. | Q2 2026 | TRIM | $19.0M | 0.0 % | 0.3 % | 88,149 | -721,468 |
| D. E. Shaw & Co., Inc. | Q2 2026 | NEW | $16.1M | 0.0 % | — | 74,438 | NEW |
| TWO SIGMA INVESTMENTS, LP | Q2 2026 | TRIM | $1.5M | 0.0 % | 0.0 % | 7,105 | -2,339 |