Companies / Biogen Inc. / Activity
Activity — Biogen Inc.
293 moves.
Top impactInsider · CEO movesInsider · biggest buysInsider · biggest sellsInstitution · biggest movesInstitution · new positions
| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | Mitsubishi UFJ Asset Management Co., Ltd. 13F manager | Add | Common stock | $8.41M | +39K +12.16% | 358,823 0.24% of shares | medium |
| Q1 2026 as of | Contravisory Investment Management, Inc. 13F manager | New | Common stock | $8.19M | +45K | 44,677 0.03% of shares | medium |
| Q1 2026 as of | Arrowstreet Capital, Limited Partnership 13F manager | Exit | Common stock | $-7.98M | -45K -100.00% | 0 | medium |
| Q1 2026 as of | Palo Alto Investors LP 13F manager | Trim | Common stock | $-7.86M | -43K -23.34% | 140,719 0.10% of shares | medium |
| Q1 2022 as of | Leonteq Securities AG 13F manager | Add | Common stock | $7.81M | +37K +43.06% | 123,202 0.08% of shares | medium |
| Q1 2026 as of | Balyasny Asset Management L.P. 13F manager | Add | Common stock | $7.72M | +42K +6.92% | 650,046 0.44% of shares | medium |
| Q2 2022 as of | Employees Provident Fund Board 13F manager | Add | Common stock | $7.62M | +37K +10.52% | 392,680 0.27% of shares | medium |
| Q1 2026 as of | Adage Capital Partners Gp, L.L.C. 13F manager | Add | Common stock | $7.17M | +39K +13.28% | 333,457 0.23% of shares | medium |
| Q1 2026 as of | BNP Paribas Financial Markets 13F manager | Trim | Common stock | $-6.78M | -37K -7.28% | 471,068 0.32% of shares | medium |
| Q1 2026 as of | Bridger Management, LLC 13F manager | Exit | Common stock | $-6.35M | -36K -100.00% | 0 | medium |
| Q1 2026 as of | Federated Hermes Inc 13F manager | Trim | Common stock | $-6.21M | -34K -25.84% | 97,279 0.07% of shares | medium |
| Q1 2026 as of | Portolan Capital Management, LLC 13F manager | Add | Common stock | $6.14M | +33K +39.41% | 118,481 0.08% of shares | medium |
| Q1 2020 as of | Employees Provident Fund Board 13F manager | Trim | Common stock | $-5.73M | -18K -36.23% | 31,886 0.02% of shares | medium |
| Q4 2025 as of | Danske Bank A/S 13F manager | Trim | Common stock | $-5.52M | -31K -39.33% | 48,415 0.03% of shares | medium |
| Q2 2026 as of | Privium Fund Management B.V. 13F manager | Trim | Common stock | $-5.42M | -25K -34.13% | 48,400 0.03% of shares | medium |
| Q1 2026 as of | Lazard Asset Management LLC 13F manager | Trim | Common stock | $-5.35M | -29K -63.28% | 16,935 0.01% of shares | medium |
| Q1 2026 as of | Peak6 LLC 13F manager | New | Common stock | $5.16M | +28K | 28,166 0.02% of shares | medium |
| Q1 2026 as of | Aviva PLC 13F manager | Trim | Common stock | $-5.14M | -28K -22.45% | 96,864 0.07% of shares | medium |
| Q1 2026 as of | AllianceBernstein L.P. 13F manager | Add | Common stock | $5.13M | +29K +15.87% | 212,897 0.14% of shares | medium |
| Q2 2024 as of | Leonteq Securities AG 13F manager | Exit | Common stock | $-4.90M | -23K -100.00% | 0 | low |
| Q2 2026 as of | Victory Capital Management, Inc. 13F manager | Add | Common stock | $4.89M | +23K +7.06% | 343,419 0.23% of shares | low |
| Q2 2026 as of | Forsta Ap-Fonden 13F manager | Exit | Common stock | $-4.80M | -27K -100.00% | 0 | low |
| Q1 2025 as of | Leonteq Securities AG 13F manager | Trim | Common stock | $-4.44M | -33K -28.60% | 81,659 0.06% of shares | low |
| Q2 2024 as of | Danske Bank A/S 13F manager | Trim | Common stock | $-4.27M | -18K -21.97% | 65,431 0.04% of shares | low |
| Q1 2026 as of | CPPIB Crestone Peak Resources Canada Inc. 13F manager | Trim | Common stock | $-4.24M | -23K -16.76% | 114,938 0.08% of shares | low |
| Q1 2026 as of | Bank of New York Mellon Corp/The 13F manager | Trim | Common stock | $-4.14M | -23K -2.78% | 788,523 0.53% of shares | low |
| Q4 2024 as of | Employees Provident Fund Board 13F manager | Add | Common stock | $3.99M | +26K +3.85% | 704,196 0.48% of shares | low |
| Q1 2026 as of | Letko, Brosseau & Associates Inc 13F manager | Add | Common stock | $3.87M | +21K +16.25% | 150,865 0.10% of shares | low |
| Q1 2026 as of | Boston Partners 13F manager | Trim | Common stock | $-3.76M | -21K -1.19% | 1,700,078 1.15% of shares | low |
| Q1 2026 as of | Hudson Bay Capital Management LP 13F manager | Trim | Common stock | $-3.76M | -20K -9.24% | 201,367 0.14% of shares | low |
| Q2 2021 as of | Employees Provident Fund Board 13F manager | Add | Common stock | $3.64M | +11K +5.20% | 212,569 0.14% of shares | low |
| Q1 2026 as of | Mariner, LLC 13F manager | Add | Common stock | $3.59M | +20K +37.28% | 72,036 0.05% of shares | low |
| Q2 2025 as of | Leonteq Securities AG 13F manager | Add | Common stock | $3.42M | +27K +33.32% | 108,868 0.07% of shares | low |
| Q1 2024 as of | Leonteq Securities AG 13F manager | Add | Common stock | $3.18M | +15K +185.33% | 22,724 0.02% of shares | low |
| Q1 2023 as of | Leonteq Securities AG 13F manager | Trim | Common stock | $-2.89M | -10K -97.44% | 273 <0.01% of shares | low |
| Q1 2026 as of | Rafferty Asset Management, LLC 13F manager | Trim | Common stock | $-2.48M | -14K -27.89% | 35,018 0.02% of shares | low |
| Q3 2024 as of | Leonteq Securities AG 13F manager | New | Common stock | $2.42M | +12K | 12,471 <0.01% of shares | low |
| Q2 2022 as of | Leonteq Securities AG 13F manager | Trim | Common stock | $-2.33M | -11K -9.27% | 111,783 0.08% of shares | low |
| Q1 2026 as of | Meitav Investment House Ltd 13F manager | Trim | Common stock | $-2.29M | -12K -37.33% | 20,972 0.01% of shares | low |
| Q4 2025 as of | Cresset Asset Management, LLC 13F manager | Trim | Common stock | $-2.28M | -13K -14.49% | 76,379 0.05% of shares | low |
| Q2 2026 as of | Mml Investors Services, LLC 13F manager | Add | Common stock | $2.25M | +10K +126.76% | 18,651 0.01% of shares | low |
| Q3 2025 as of | Peak6 LLC 13F manager | Exit | Common stock | $-2.17M | -17K -100.00% | 0 | low |
| Q4 2024 as of | Danske Bank A/S 13F manager | Add | Common stock | $2.16M | +14K +21.49% | 79,798 0.05% of shares | low |
| Q1 2026 as of | Royal Bank of Canada 13F manager | Trim | Common stock | $-1.92M | -10K -1.93% | 531,377 0.36% of shares | low |
| Q1 2026 as of | Graham Capital Management, L.P. 13F manager | New | Common stock | $1.90M | +10K | 10,342 <0.01% of shares | low |
| Q1 2024 as of | Barclays PLC 13F manager | Add | Common stock | $1.79M | +8K +1.56% | 540,565 0.37% of shares | low |
| Q2 2026 as of | WINTON GROUP Ltd 13F manager | Exit | Common stock | $-1.79M | -10K -100.00% | 0 | low |
| Q3 2025 as of | Broadwater Capital Management LLC 13F manager | Trim | Common stock | $-1.75M | -12K -99.20% | 100 <0.01% of shares | low |
| Q4 2022 as of | Leonteq Securities AG 13F manager | Trim | Common stock | $-1.61M | -6K -35.23% | 10,675 <0.01% of shares | low |
| Q1 2026 as of | Voya Investment Management LLC 13F manager | Trim | Common stock | $-1.49M | -8K -12.97% | 54,561 0.04% of shares | low |