Biogen Inc. – Investors and Politicians Who Own It
BIIB
Investors who own it
6 tracked investors, $375.5M in shares, each from their latest 13F.
| Investor | Value | Share of portfolio |
|---|---|---|
Anand ParekhAlyeska Investment Group, Q2 2026 | $201.4M | 0.52% |
| $87.7M | 0.06% | |
Joseph EdelmanPerceptive Advisors, Q2 2026 | $59.7M | 0.90% |
Farallon Capital ManagementQ2 2026 | $15.3M | 0.07% |
Barry RitholtzRitholtz Wealth Management, Q2 2026 | $7.4M | 0.11% |
Daniel SchneebergerADAR1 Capital Management, Q2 2026 | $3.9M | 0.18% |
Politicians who own it
Estimated from annual disclosures and trades; values are rough estimates.
| Politician | Est. value | Share of portfolio |
|---|---|---|
J. French HillR-AR · House | $94.7K | 0.55% |
Gilbert Ray Cisneros, Jr.D-CA · House | $19K | 0.04% |
Robert P. Bresnahan, Jr.R-PA · House | $10.1K | 0.06% |
Alan ArmstrongR-OK · Senate | $9.7K | 0.19% |
Investors buying and selling
| Investor | Action | Shares now |
|---|---|---|
| Anand Parekh | Added +21% | 1,024,268 |
| Larry Robbins | New | 290,605 |
| Joseph Edelman | New | 124,000 |
| National Pension Service (Korea) | Added +0.7% | 287,238 |
| Ray Dalio | Sold out | 0 |
| Barry Ritholtz | Added +143% | 28,375 |
| Daniel Schneeberger | Added +35% | 24,300 |
Politicians trading it
Latest Congress trades disclosed under the STOCK Act; amounts are ranges.
| Politician | Action | Traded |
|---|---|---|
Kevin HernR-OK · House | Sold$1K–$15K | Aug 18, 2026disclosed Sep 1, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Jun 5, 2026disclosed Jul 2, 2026 |
Maria Elvira SalazarR-FL · House | Sold$15K–$50K | Jun 2, 2026disclosed Jul 7, 2026 |
Maria Elvira SalazarR-FL · House | Bought$1K–$15K | May 12, 2026disclosed Jun 8, 2026 |
Maria Elvira SalazarR-FL · House | Bought$1K–$15K | May 11, 2026disclosed Jun 8, 2026 |
Maria Elvira SalazarR-FL · House | Bought$50K–$100K | May 11, 2026disclosed Jun 8, 2026 |
Alan ArmstrongR-OK · Senate | Bought$1K–$15K | Mar 27, 2026disclosed Jul 21, 2026 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Jan 30, 2026disclosed Feb 13, 2026 |
Robert P. Bresnahan, Jr.R-PA · House | Bought$1K–$15K | May 15, 2025disclosed Jun 9, 2025 |
Robert P. Bresnahan, Jr.R-PA · House | Sold$1K–$15K | Apr 8, 2025disclosed May 8, 2025 |
Robert P. Bresnahan, Jr.R-PA · House | Bought$1K–$15K | Feb 25, 2025disclosed Mar 27, 2025 |
Daniel S. GoldmanD-NY · House | Sold part$1K–$15K | Mar 6, 2023disclosed Apr 17, 2023 |
Shri ThanedarD-MI · House | Sold$15K–$50K | Jan 23, 2023disclosed Feb 9, 2023 |
Kathy E. ManningJointD-NC · House | Sold$1K–$15K | Aug 3, 2022disclosed Sep 14, 2022 |
Kathy E. ManningJointD-NC · House | Bought$1K–$15K | Jul 20, 2022disclosed Aug 10, 2022 |
Josh GottheimerJointD-NJ · House | Sold$1K–$15K | Mar 17, 2022disclosed Apr 17, 2022 |
Kathy E. ManningSpouseD-NC · House | Sold$1K–$15K | Jan 14, 2022disclosed Feb 11, 2022 |
Josh GottheimerJointD-NJ · House | Bought$1K–$15K | Jan 10, 2022disclosed Feb 18, 2022 |
Josh GottheimerJointD-NJ · House | Sold part$1K–$15K | Dec 9, 2021disclosed Jan 10, 2022 |
Josh GottheimerJointD-NJ · House | Bought$1K–$15K | Oct 18, 2021disclosed Nov 15, 2021 |
Josh GottheimerJointD-NJ · House | Sold part$1K–$15K | Sep 15, 2021disclosed Oct 13, 2021 |
Josh GottheimerJointD-NJ · House | Bought$1K–$15K | Jun 8, 2021disclosed Jul 15, 2021 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold$1K–$15K | Dec 22, 2020disclosed Jan 11, 2021 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Sep 16, 2020disclosed Oct 14, 2020 |
Josh GottheimerJointD-NJ · House | Bought$1K–$15K | Jul 7, 2020disclosed Aug 10, 2020 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Apr 29, 2020disclosed May 13, 2020 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold$1K–$15K | Mar 18, 2020disclosed Apr 16, 2020 |
Gilbert Ray Cisneros, Jr.D-CA · House | Bought$1K–$15K | Feb 7, 2020disclosed Mar 10, 2020 |
Gilbert Ray Cisneros, Jr.D-CA · House | Sold$1K–$15K | May 9, 2019disclosed Jun 18, 2019 |
Sheldon WhitehouseSpouseD-RI · Senate | Sold$1K–$15K | Mar 22, 2019disclosed Apr 17, 2019 |
Josh GottheimerJointD-NJ · House | Sold$1K–$15K | Oct 29, 2018disclosed Nov 16, 2018 |
Josh GottheimerJointD-NJ · House | Bought$1K–$15K | Jul 24, 2018disclosed Oct 2, 2018 |