ALLIANCEBERNSTEIN L.P.

Position in BIIB — Biogen Inc.

CIK 1109448 NASHVILLE, TN

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Position in BIIB

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$39,030,407

+$6,693,301 QoQ

Shares Held

212,897

+15.9% QoQ

Ownership

0.144%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 68.28513318647045.ToString("F0")% Shared 0.ToString("F0")% None 31.714866813529547.ToString("F0")%

Common Shares in BIIB Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - General

Healthcare · as of Mar 31, 2026

ALLIANCEBERNSTEIN L.P. holds $10,903,455,836 across 14 Drug Manufacturers - General names. BIIB ranks #10 (0.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LLY	ELI LILLY & Co	4,427,764	$4,072,524,494
2	JNJ	Johnson & Johnson	6,948,656	$1,698,529,472
3	MRK	Merck & Co., Inc.	11,301,486	$1,359,455,750
4	ABBV	AbbVie Inc.	5,416,509	$1,178,036,542
5	AZN	Astrazeneca PLC	5,279,565	$1,041,235,809
6	GILD	Gilead Sciences, Inc.	5,729,225	$798,482,088
7	BMY	Bristol Myers Squibb Co	4,872,680	$295,528,042
8	AMGN	Amgen Inc	599,207	$210,830,982

All Filings in BIIB

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$39,030,407	212,897	+15.9%	Shares	Defined	2026-05-15
2025-12-31	$32,337,106	183,744	-22.6%	Shares	Defined	2026-02-17
2025-09-30	$33,237,482	237,275	+2.7%	Shares	Defined	2025-11-14
2025-06-30	$29,024,853	231,108	+0.9%	Shares	Defined	2025-08-14
2025-03-31	$31,343,749	229,054	+26.7%	Shares	Defined	2025-05-15
2024-12-31	$27,636,161	180,723	+0.9%	Shares	Defined	2025-02-12
2024-09-30	$34,722,753	179,131	-36.3%	Shares	Defined	2024-11-14
2024-06-30	$65,208,415	281,289	+39.3%	Shares	Defined	2024-08-14
2024-03-31	$43,533,756	201,891	-12.1%	Shares	Defined	2024-05-14
2023-12-31	$59,468,710	229,813	-8.6%	Shares	Defined	2024-02-14
2023-09-30	$64,639,043	251,504	+4.6%	Shares	Defined	2023-11-14
2023-06-30	$68,477,655	240,399	-18.1%	Shares	Defined	2023-08-15
2023-03-31	$81,608,199	293,523	+20.8%	Shares	Defined	2023-05-15
2022-12-31	$67,285,467	242,978	+4.6%	Shares	Defined	2023-02-15
2022-09-30	$62,045,193	232,379	+0.8%	Shares	Defined	2022-11-15
2022-06-30	$47,024,077	230,578	+18.6%	Shares	Defined	2022-08-15
2022-03-31	$40,959,594	194,490	+0.4%	Shares	Defined	2022-05-13
2021-12-31	$46,474,423	193,708	-18.5%	Shares	Defined	2022-02-14
2021-09-30	$67,248,611	237,636	+3.2%	Shares	Defined	2021-11-10
2021-06-30	$79,766,410	230,359	-10.5%	Shares	Defined	2021-07-30
2021-03-31	$72,000,096	257,373	-7.1%	Shares	Defined	2021-05-06
2020-12-31	$67,820,098	276,975	+2.2%	Shares	Defined	2021-02-08
2020-09-30	$76,882,953	271,020	-3.8%	Shares	Defined	2020-11-12
2020-06-30	$75,371,778	281,711	-11.1%	Shares	Defined	2020-08-13
2020-03-31	$100,226,969	316,793	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.