Biogen Inc.

TEACHER RETIREMENT SYSTEM OF TEXAS BIIB

Report date

12/31/2025

Quarter

2025 Q4

Filed

1/28/2026

Shares

23,489

Value ($000)

4,134

Weight

0.0%

2013 Q4 - 2025 Q4 (28 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	1/28/2026	4,134	0.0%	23,489	12/31/2025
2025 Q3	10/30/2025	5,294	0.0%	37,793	9/30/2025
2025 Q2	8/1/2025	5,146	0.0%	40,975	6/30/2025
2025 Q1	4/28/2025	5,456	0.0%	39,872	3/31/2025
2024 Q4	2/11/2025	7,976	0.0%	52,157	12/31/2024
2024 Q3	11/13/2024	7,636	0.0%	39,392	9/30/2024
2024 Q2	8/9/2024	7,844	0.0%	33,837	6/30/2024
2024 Q1	5/6/2024	7,104	0.0%	32,946	3/31/2024
2023 Q4	2/7/2024	8,765	0.1%	33,870	12/31/2023
2023 Q3	10/31/2023	9,847	0.1%	38,312	9/30/2023
2023 Q2	7/19/2023	10,715	0.1%	37,618	6/30/2023
2023 Q1	5/12/2023	9,368	0.1%	33,695	3/31/2023
2022 Q4	2/13/2023	17,465	0.1%	63,069	12/31/2022
2022 Q3	11/3/2022	6,055	0.0%	22,678	9/30/2022
2022 Q2	8/9/2022	6,234	0.0%	30,567	6/30/2022
2022 Q1	5/9/2022	8,040	0.0%	38,177	3/31/2022
2021 Q4	2/10/2022	6,897	0.0%	28,749	12/31/2021
2021 Q3	11/9/2021	7,829	0.0%	27,667	9/30/2021
2021 Q2	8/5/2021	17,142	0.1%	49,504	6/30/2021
2021 Q1	5/11/2021	13,536	0.1%	48,386	3/31/2021
2020 Q4	2/11/2021	7,662	0.0%	31,293	12/31/2020
2020 Q3	11/2/2020	45,709	0.3%	161,130	9/30/2020
2020 Q2	8/11/2020	37,929	0.3%	141,764	6/30/2020
2020 Q1	5/5/2020	34,869	0.4%	110,213	3/31/2020
2019 Q4	2/6/2020	64,960	0.5%	218,918	12/31/2019
2014 Q2	8/5/2014	2,075	0.0%	6,580	6/30/2014
2014 Q1	5/1/2014	1,238	0.0%	4,048	3/31/2014
2013 Q4	2/5/2014	1,184	0.0%	4,234	12/31/2013