Stocks
BIIB
STATE STREET CORP

STATE STREET CORP

CIK

0000093751

City

BOSTON

State / Country

Stock

BIIB — BIOGEN INC.

Holdings in BIIB

Position Over Time

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2025-12-31	$1,259,915,929	7,159,020	-2.2%	Shares	Defined	2026-02-13
2025-09-30	$1,025,350,439	7,319,749	-2.0%	Shares	Defined	2025-11-14
2025-06-30	$938,007,471	7,468,807	+1.0%	Shares	Defined	2025-08-14
2025-03-31	$1,012,193,164	7,396,910	-0.0%	Shares	Defined	2025-05-15
2024-12-31	$1,131,340,084	7,398,248	+0.7%	Shares	Defined	2025-02-14
2024-09-30	$1,423,747,046	7,344,960	+3.5%	Shares	Defined	2024-11-14
2024-06-30	$1,644,998,892	7,096,018	+5.2%	Shares	Defined	2024-08-14
2024-03-31	$1,454,857,335	6,747,008	-2.9%	Shares	Defined	2024-05-15
2023-12-31	$1,797,329,732	6,945,665	+1.2%	Shares	Defined	2024-02-14
2023-09-30	$1,764,541,734	6,865,654	-0.3%	Shares	Defined	2023-11-14
2023-06-30	$1,961,253,492	6,885,215	+1.9%	Shares	Defined	2023-08-14
2023-03-31	$1,878,648,710	6,757,000	-0.8%	Shares	Defined	2023-05-15
2022-12-31	$1,885,347,236	6,808,274	-1.3%	Shares	Defined	2023-05-15
2022-09-30	$1,841,060,319	6,895,357	+0.3%	Shares	Defined	2022-11-15
2022-06-30	$1,402,471,111	6,876,881	-4.6%	Shares	Defined	2022-08-15
2022-03-31	$1,518,195,603	7,208,906	+2.8%	Shares	Defined	2022-05-16
2021-12-31	$1,682,200,519	7,011,506	+1.6%	Shares	Defined	2022-02-14
2021-09-30	$1,953,631,652	6,903,536	+3.3%	Shares	Defined	2021-11-15
2021-06-30	$2,313,097,450	6,680,040	+0.1%	Shares	Defined	2021-08-16
2021-03-31	$1,866,641,106	6,672,533	-4.6%	Shares	Defined	2021-07-09
2020-12-31	$1,712,064,792	6,992,015	-7.1%	Shares	Defined	2021-02-16
2020-09-30	$2,134,322,081	7,523,696	-4.0%	Shares	Defined	2020-11-10
2020-06-30	$2,096,755,371	7,836,873	-5.1%	Shares	Defined	2020-08-14
2020-03-31	$2,614,008,123	8,262,242	—	Shares	Defined	2020-06-19