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 |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Norges Bank 13F manager | Exit | Common stock | $-464.41M | -2.6M -100.00% | 0 | high |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common stock | $253.73M | +1.2M +7.93% | 15,985,736 10.82% of shares | high |
| Q1 2026 as of | Millennium Management LLC 13F manager | Trim | Common stock | $-189.13M | -1.0M -91.65% | 93,964 0.06% of shares | high |
| Q3 2024 as of | Barclays PLC 13F manager | Add | Common stock | $91.80M | +474K +105.80% | 921,256 0.62% of shares | high |
| Q4 2025 as of | Norges Bank 13F manager | Add | Common stock | $85.43M | +485K +22.54% | 2,638,834 1.79% of shares | high |
| Q3 2025 as of | Barclays PLC 13F manager | Add | Common stock | $78.69M | +562K +70.43% | 1,359,424 0.92% of shares | high |
| Q1 2026 as of | AQR Capital Management, LLC 13F manager | Add | Common stock | $71.09M | +395K +25.84% | 1,923,557 1.30% of shares | high |
| Q3 2023 as of | Barclays PLC 13F manager | Trim | Common stock | $-49.37M | -192K -32.68% | 395,676 0.27% of shares | medium |
| Q1 2023 as of | Barclays PLC 13F manager | Trim | Common stock | $-45.84M | -165K -26.48% | 457,843 0.31% of shares | medium |
| Q1 2026 as of | Two Sigma Investments, LP 13F manager | Trim | Common stock | $-44.42M | -242K -96.25% | 9,444 <0.01% of shares | medium |
| Q1 2026 as of | Causeway Capital Management LLC 13F manager | Trim | Common stock | $-44.06M | -240K -46.12% | 280,783 0.19% of shares | medium |
| Q1 2026 as of | Glenview Capital Management, LLC 13F manager | Trim | Common stock | $-42.82M | -234K -80.38% | 57,019 0.04% of shares | medium |
| Q1 2026 as of | Amundi 13F manager | Add | Common stock | $40.04M | +218K +38.15% | 790,827 0.54% of shares | medium |
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common stock | $40.04M | +185K +2.59% | 7,344,327 4.97% of shares | medium |
| Q3 2023 as of | Employees Provident Fund Board 13F manager | Add | Common stock | $39.81M | +155K +53.88% | 442,416 0.30% of shares | medium |
| Q2 2023 as of | Barclays PLC 13F manager | Add | Common stock | $37.01M | +130K +28.38% | 587,761 0.40% of shares | medium |
| Q1 2026 as of | Renaissance Technologies LLC 13F manager | Trim | Common stock | $-35.90M | -196K -49.05% | 203,396 0.14% of shares | medium |
| Q4 2023 as of | Barclays PLC 13F manager | Add | Common stock | $35.34M | +137K +34.52% | 532,260 0.36% of shares | medium |
| Q2 2020 as of | Employees Provident Fund Board 13F manager | Add | Common stock | $35.18M | +131K +412.33% | 163,360 0.11% of shares | medium |
| Q1 2026 as of | Prudential Financial Inc 13F manager | Trim | Common stock | $-34.76M | -190K -53.64% | 163,887 0.11% of shares | medium |
| Q4 2023 as of | Employees Provident Fund Board 13F manager | Add | Common stock | $31.53M | +122K +27.54% | 564,273 0.38% of shares | medium |
| Q1 2026 as of | Los Angeles Capital Management LLC 13F manager | Trim | Common stock | $-31.13M | -170K -82.76% | 35,358 0.02% of shares | medium |
| Q1 2022 as of | Employees Provident Fund Board 13F manager | Add | Common stock | $30.06M | +143K +67.15% | 355,318 0.24% of shares | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | Trim | Common stock | $-28.61M | -156K -40.43% | 229,879 0.16% of shares | medium |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common stock | $26.16M | +143K +3.41% | 4,342,602 2.94% of shares | medium |
| Q3 2022 as of | Leonteq Securities AG 13F manager | Trim | Common stock | $-25.45M | -95K -85.26% | 16,481 0.01% of shares | medium |
| Q1 2024 as of | Employees Provident Fund Board 13F manager | Add | Common stock | $24.54M | +114K +20.17% | 678,080 0.46% of shares | medium |
| Q1 2026 as of | Nomura Holdings Inc 13F manager | Trim | Common stock | $-23.93M | -131K -88.64% | 16,730 0.01% of shares | medium |
| Q1 2026 as of | Perceptive Advisors LLC 13F manager | Exit | Common stock | $-21.82M | -124K -100.00% | 0 | medium |
| Q2 2024 as of | Barclays PLC 13F manager | Trim | Common stock | $-21.54M | -93K -17.19% | 447,653 0.30% of shares | medium |
| Q1 2026 as of | First Trust Advisors LP 13F manager | Add | Common stock | $19.82M | +108K +19.11% | 673,958 0.46% of shares | medium |
| Q2 2023 as of | Employees Provident Fund Board 13F manager | Trim | Common stock | $-16.38M | -58K -16.67% | 287,500 0.19% of shares | medium |
| Q4 2025 as of | Bank of America Corp /De 13F manager | Trim | Common stock | $-16.05M | -91K -7.47% | 1,128,845 0.76% of shares | medium |
| Q4 2024 as of | Leonteq Securities AG 13F manager | Add | Common stock | $15.58M | +102K +817.03% | 114,363 0.08% of shares | medium |
| Q2 2025 as of | Barclays PLC 13F manager | Trim | Common stock | $-15.16M | -121K -13.14% | 797,655 0.54% of shares | medium |
| Q4 2019 as of | Employees Provident Fund Board 13F manager | New | Common stock | $14.84M | +50K | 50,000 0.03% of shares | medium |
| Q1 2026 as of | Victory Capital Management, Inc. 13F manager | Add | Common stock | $13.59M | +74K +30.06% | 320,785 0.22% of shares | medium |
| Q4 2022 as of | Employees Provident Fund Board 13F manager | Trim | Common stock | $-13.20M | -48K -12.14% | 345,000 0.23% of shares | medium |
| Q2 2026 as of | Deutsche Bank AG 13F manager | Trim | Common stock | $-12.90M | -60K -6.26% | 894,035 0.61% of shares | medium |
| Q1 2026 as of | Zurcher Kantonalbank (Zurich Cantonalbank) 13F manager | Add | Common stock | $12.78M | +70K +15.41% | 522,155 0.35% of shares | medium |
| Q4 2024 as of | Barclays PLC 13F manager | Trim | Common stock | $-12.68M | -83K -9.00% | 838,354 0.57% of shares | medium |
| Q4 2021 as of | Leonteq Securities AG 13F manager | Add | Common stock | $12.16M | +51K +143.17% | 86,120 0.06% of shares | medium |
| Q3 2025 as of | Leonteq Securities AG 13F manager | Trim | Common stock | $-12.01M | -86K -78.77% | 23,117 0.02% of shares | medium |
| Q1 2026 as of | Orbimed Advisors LLC 13F manager | New | Common stock | $11.29M | +62K | 61,600 0.04% of shares | medium |
| Q1 2025 as of | Barclays PLC 13F manager | Add | Common stock | $10.95M | +80K +9.54% | 918,353 0.62% of shares | medium |
| Q1 2026 as of | Credit Agricole S a 13F manager | Trim | Common stock | $-9.86M | -54K -70.06% | 22,985 0.02% of shares | medium |
| Q3 2021 as of | Leonteq Securities AG 13F manager | Add | Common stock | $9.67M | +34K +2740.10% | 35,416 0.02% of shares | medium |
| Q4 2025 as of | Barclays PLC 13F manager | Trim | Common stock | $-9.58M | -54K -4.00% | 1,305,007 0.88% of shares | medium |
| Q4 2020 as of | Employees Provident Fund Board 13F manager | Add | Common stock | $9.48M | +39K +23.70% | 202,069 0.14% of shares | medium |
| Q1 2026 as of | D. E. Shaw & Co., Inc. 13F manager | Exit | Common stock | $-9.46M | -54K -100.00% | 0 | medium |