Swiss National Bank

Bank

Position in BIIB — Biogen Inc.

CIK 1582202 ZURICH, V8

Position in BIIB

as of Mar 31, 2026 · filed May 7, 2026 Compact

Position Value

$78,941,898

+$8,229,116 QoQ

Shares Held

430,600

+7.2% QoQ

Ownership

0.292%

of shares outstanding

% of Portfolio

0.05%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

Swiss National Bank holds $9,095,925,651 across 11 Drug Manufacturers - General names. BIIB ranks #10 (0.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LLY	ELI LILLY & Co	2,358,310	$2,169,102,788
2	JNJ	Johnson & Johnson	7,070,707	$1,728,363,619
3	AZN	Astrazeneca PLC	6,174,666	$1,217,767,628
4	ABBV	AbbVie Inc.	5,186,810	$1,128,079,306
5	MRK	Merck & Co., Inc.	7,284,151	$876,210,523
6	AMGN	Amgen Inc	1,580,353	$556,047,203
7	GILD	Gilead Sciences, Inc.	3,641,000	$507,446,170
8	PFE	Pfizer Inc	16,686,212	$468,548,832

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$78,941,898	430,600	+7.2%	Shares	Sole	2026-05-07
2025-12-31	$70,712,782	401,800	-4.9%	Shares	Sole	2026-02-12
2025-09-30	$59,169,792	422,400	-4.7%	Shares	Sole	2025-11-13
2025-06-30	$55,648,929	443,100	+7.8%	Shares	Sole	2025-08-12
2025-03-31	$56,241,240	411,000	-0.1%	Shares	Sole	2025-05-12
2024-12-31	$62,926,580	411,500	-4.8%	Shares	Sole	2025-02-10
2024-09-30	$83,758,264	432,100	+0.4%	Shares	Sole	2024-11-07
2024-06-30	$99,775,328	430,400	-0.8%	Shares	Sole	2024-08-08
2024-03-31	$93,561,857	433,900	-4.2%	Shares	Sole	2024-05-07
2023-12-31	$117,196,933	452,900	-2.7%	Shares	Sole	2024-02-06
2023-09-30	$119,663,856	465,600	-10.8%	Shares	Sole	2023-11-08
2023-06-30	$148,663,215	521,900	-8.7%	Shares	Sole	2023-08-09
2023-03-31	$158,894,145	571,500	-3.1%	Shares	Sole	2023-05-10
2022-12-31	$163,327,416	589,800	-7.1%	Shares	Sole	2023-02-08
2022-09-30	$169,484,124	634,772	-0.4%	Shares	Sole	2022-11-09
2022-06-30	$129,985,645	637,372	+0.2%	Shares	Sole	2022-08-09
2022-03-31	$133,998,883	636,272	+12.3%	Shares	Sole	2022-05-09
2021-12-31	$135,931,954	566,572	-4.8%	Shares	Sole	2022-02-08
2021-09-30	$168,456,023	595,272	-4.2%	Shares	Sole	2021-11-08
2021-06-30	$215,058,601	621,072	+5.0%	Shares	Sole	2021-08-06
2021-03-31	$165,544,300	591,758	-1.0%	Shares	Sole	2021-05-07
2020-12-31	$146,415,995	597,958	-5.9%	Shares	Sole	2021-02-05
2020-09-30	$180,209,989	635,258	-7.7%	Shares	Sole	2020-11-09
2020-06-30	$184,196,937	688,458	-1.7%	Shares	Sole	2020-08-05
2020-03-31	$221,579,264	700,358	—	Shares	Sole	2020-05-08
No filing history on record for this holder in this stock.