Historical shareholding details of Vanguard Health Care Index Fund holdings in Biogen Inc (BIIB)

Monthly changes of Vanguard Health Care Index Fund shareholding in Biogen Inc over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Feb 28, 2025	Vanguard Health Care Index Fund	463,052	0.32%

Jan 31, 2025	Vanguard Health Care Index Fund	463,832	0.32%

Dec 31, 2024	Vanguard Health Care Index Fund	473,036	0.32%

Nov 30, 2024	Vanguard Health Care Index Fund	479,129	0.33%

Oct 31, 2024	Vanguard Health Care Index Fund	483,168	0.33%

Sep 30, 2024	Vanguard Health Care Index Fund	483,884	0.33%

Aug 31, 2024	Vanguard Health Care Index Fund	486,887	0.33%

Jul 31, 2024	Vanguard Health Care Index Fund	485,756	0.33%

Jun 30, 2024	Vanguard Health Care Index Fund	488,816	0.34%

May 31, 2024	Vanguard Health Care Index Fund	490,826	0.34%

Apr 30, 2024	Vanguard Health Care Index Fund	492,050	0.34%

Mar 31, 2024	Vanguard Health Care Index Fund	493,643	0.34%

Feb 29, 2024	Vanguard Health Care Index Fund	494,265	0.34%

Jan 31, 2024	Vanguard Health Care Index Fund	490,798	0.34%

Dec 31, 2023	Vanguard Health Care Index Fund	487,224	0.34%

Nov 30, 2023	Vanguard Health Care Index Fund	489,744	0.34%

Oct 31, 2023	Vanguard Health Care Index Fund	495,517	0.34%

Sep 30, 2023	Vanguard Health Care Index Fund	502,319	0.35%

Aug 31, 2023	Vanguard Health Care Index Fund	502,384	0.35%

Jul 31, 2023	Vanguard Health Care Index Fund	500,630	0.35%

Jun 30, 2023	Vanguard Health Care Index Fund	495,983	0.34%

May 31, 2023	Vanguard Health Care Index Fund	499,959	0.35%

Apr 30, 2023	Vanguard Health Care Index Fund	502,877	0.35%