Historical shareholding details of Renaissance Technologies Corp holdings in Biogen Inc (BIIB)

Monthly changes of Renaissance Technologies Corp shareholding in Biogen Inc over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Mar 31, 2025	Renaissance Technologies Corp	804,506	0.55%

Dec 31, 2024	Renaissance Technologies Corp	1,192,206	0.81%

Sep 30, 2024	Renaissance Technologies Corp	952,706	0.65%

Jun 30, 2024	Renaissance Technologies Corp	618,106	0.42%

Mar 31, 2024	Renaissance Technologies Corp	884,704	0.61%

Dec 31, 2023	Renaissance Technologies Corp	758,606	0.52%

Sep 30, 2023	Renaissance Technologies Corp	1,086,397	0.75%

Jun 30, 2023	Renaissance Technologies Corp	1,109,537	0.77%

Mar 31, 2023	Renaissance Technologies Corp	1,263,837	0.87%