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BIIB position history

The shares of Biogen (BIIB) that HORIZON KINETICS ASSET MANAGEMENT LLC reported in each quarter’s 13F.

Equity, COM

Shares held by quarter

New Add Reduce Exit

  1. 2021 Q3: 3,875 shares, $1.1M, 0.03% of portfolio
  2. 2021 Q4: 3,750 shares, $900K, 0.02% of portfolio, Reduce −3.2%
  3. 2022 Q1: 3,750 shares, $790K, 0.02% of portfolio
  4. 2022 Q2: 3,750 shares, $765K, 0.02% of portfolio
  5. 2022 Q3: 3,750 shares, $1M, 0.02% of portfolio
  6. 2022 Q4: 7,500 shares, $2.1M, 0.03% of portfolio, Add +100.0%
  7. 2023 Q1: 3,250 shares, $904K, 0.02% of portfolio, Reduce −56.7%
  8. 2023 Q2: 3,250 shares, $926K, 0.02% of portfolio
  9. 2023 Q3: 3,250 shares, $835K, 0.02% of portfolio
  10. 2023 Q4: 3,119 shares, $807K, 0.02% of portfolio, Reduce −4.0%
  11. 2024 Q1: 3,121 shares, $673K, 0.01% of portfolio, Add +0.1%
  12. 2024 Q2: 3,121 shares, $724K, 0.01% of portfolio
  13. 2024 Q3: 3,040 shares, $589K, <0.01% of portfolio, Reduce −2.6%
  14. 2024 Q4: 3,169 shares, $485K, <0.01% of portfolio, Add +4.2%
  15. 2025 Q1: 3,169 shares, $434K, <0.01% of portfolio
  16. 2025 Q2: 3,038 shares, $382K, <0.01% of portfolio, Reduce −4.1%
  17. 2025 Q3: 3,119 shares, $437K, <0.01% of portfolio, Add +2.7%
  18. 2025 Q4: 2,988 shares, $526K, <0.01% of portfolio, Reduce −4.2%
  19. 2026 Q1: 2,857 shares, $524K, <0.01% of portfolio, Reduce −4.4%
  20. 2026 Q2: 2,726 shares, $589K, <0.01% of portfolio, Reduce −4.6%
Holdings date Value % of holdings Shares Filing date All 13F holders