TrackerSEC 13F ownership
Mild distributionBiogen Inc. institutional positioning
Biogen Inc. shows mild distribution in the latest SEC 13F quarter: -4.3% reported shares, 42 managers reporting.
13F value23.9B-2.3% versus prior quarter
Reported shares132.3M-4.4% versus prior quarter
Managers42-14 manager change
Option tilt-14.2%Call less put value share
13F ownership trend
Q4 '23 to Q1 '26Reported value path, quarterly change, and manager coverage
Latest reported value23.9B-2.3% QoQ
Trend over chart-22.2%Q4 '23 to Q1 '26
Manager positions1,000-5 QoQ
SEC 13F ownership historyDec 31, 2023Quarterly SEC 13F history1 companiesReported value 30.7BValue change +5.4%Reported shares 129.1MManagers 1,006This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow. Mar 31, 2024Quarterly SEC 13F history1 companiesReported value 25.1BValue change -18.3%Reported shares 127.7MManagers 956This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow. Jun 30, 2024Quarterly SEC 13F history1 companiesReported value 27.5BValue change +9.7%Reported shares 129.2MManagers 954This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow. Sep 30, 2024Quarterly SEC 13F history1 companiesReported value 22.9BValue change -16.6%Reported shares 127.9MManagers 923This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow. Dec 31, 2024Quarterly SEC 13F history1 companiesReported value 19.2BValue change -16.2%Reported shares 132.4MManagers 880This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow. Mar 31, 2025Quarterly SEC 13F history1 companiesReported value 17.1BValue change -10.9%Reported shares 128.7MManagers 880This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow. Jun 30, 2025Quarterly SEC 13F history1 companiesReported value 16.2BValue change -5.4%Reported shares 130.7MManagers 867This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow. Sep 30, 2025Quarterly SEC 13F history1 companiesReported value 18.5BValue change +14.4%Reported shares 131.3MManagers 915This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow. Dec 31, 2025Quarterly SEC 13F history1 companiesReported value 24.4BValue change +31.7%Reported shares 138.3MManagers 1,005This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow. Mar 31, 2026Quarterly SEC 13F history1 companiesReported value 23.9BValue change -2.3%Reported shares 132.3MManagers 1,000This is a delayed quarterly ownership snapshot, useful for sponsorship trend, not intraday flow.
Reported value path QoQ value change Manager-position coverage