Biogen Inc.

Swiss Life Asset Management Ltd BIIB

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/4/2026

Shares

25,196

Value ($000)

4,434

Weight

0.0%

2015 Q1 - 2025 Q4 (36 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/4/2026	4,434	0.0%	25,196	12/31/2025
2025 Q2	12/2/2025	7,839	0.0%	62,415	6/30/2025
2025 Q1	12/2/2025	8,040	0.1%	58,758	3/31/2025
2024 Q4	12/9/2025	7,920	0.1%	51,817	12/31/2024
2024 Q3	12/9/2025	1,663	0.0%	8,590	9/30/2024
2024 Q2	12/9/2025	2,560	0.0%	11,045	6/30/2024
2024 Q1	12/9/2025	1,753	0.0%	8,131	3/31/2024
2023 Q4	12/9/2025	6,950	0.1%	26,823	12/31/2023
2023 Q3	12/9/2025	4,185	0.1%	16,292	9/30/2023
2023 Q2	12/9/2025	6,040	0.1%	21,197	6/30/2023
2023 Q1	12/9/2025	11,045	0.2%	39,723	3/31/2023
2022 Q4	12/9/2025	7,776	0.1%	28,055	12/31/2022
2022 Q3	12/9/2025	8,899	0.2%	33,335	9/30/2022
2022 Q2	12/9/2025	6,596	0.1%	32,324	6/30/2022
2022 Q1	12/9/2025	1,735	0.0%	8,249	3/31/2022
2021 Q4	12/29/2025	368	0.0%	1,531	12/31/2021
2021 Q2	12/29/2025	13,159	0.2%	26,512	6/30/2021
2020 Q4	12/29/2025	5,128	0.1%	20,944	12/31/2020
2020 Q3	12/29/2025	5,670	0.1%	19,988	9/30/2020
2020 Q2	12/29/2025	5,385	0.1%	20,123	6/30/2020
2020 Q1	12/29/2025	2,176	0.0%	6,879	3/31/2020
2019 Q4	12/29/2025	4,556	0.1%	15,352	12/31/2019
2019 Q2	12/29/2025	23,673	0.3%	101,234	6/30/2019
2019 Q1	12/29/2025	17,174	0.2%	72,656	3/31/2019
2018 Q3	12/29/2025	1,089	0.0%	3,082	9/30/2018
2018 Q2	12/29/2025	1,055	0.0%	3,633	6/30/2018
2018 Q1	12/29/2025	3,656	0.1%	13,353	3/31/2018
2017 Q4	12/29/2025	10,982	0.2%	34,467	12/31/2017
2017 Q3	12/29/2025	7,214	0.2%	23,042	9/30/2017
2017 Q2	12/29/2025	6,863	0.2%	25,295	6/30/2017
2017 Q1	12/29/2025	7,306	0.2%	26,718	3/31/2017
2016 Q1	12/29/2025	6,447	0.3%	24,766	3/31/2016
2015 Q4	12/29/2025	6,659	0.4%	21,738	12/31/2015
2015 Q3	12/29/2025	5,732	0.3%	19,642	9/30/2015
2015 Q2	12/29/2025	7,699	0.5%	19,059	6/30/2015
2015 Q1	12/29/2025	8,326	0.5%	19,719	3/31/2015