ADAMS DIVERSIFIED EQUITY FUND, INC.

Position in BIIB — Biogen Inc.

CIK 2230 Baltimore, MD

Position in BIIB

as of Jun 30, 2026 · filed Jul 22, 2026 Compact

Position Value

$21,670,818

+$3,282,819 QoQ

Shares Held

100,300

0.0% QoQ

Ownership

0.068%

of shares outstanding

% of Portfolio

0.67%

of 13F equity value

Holder Rank

#108

of 1,031 holders

Holding Since

Dec 2025

3 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

ADAMS DIVERSIFIED EQUITY FUND, INC. holds $186,888,543 across 5 Drug Manufacturers - General names. BIIB ranks #5 (11.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	LLY	ELI LILLY & Co	50,768	$60,892,667
2	ABBV	AbbVie Inc.	172,800	$43,483,392
3	MRK	Merck & Co., Inc.	270,300	$34,733,550
4	JNJ	Johnson & Johnson	102,800	$26,108,116
5	BIIB	Biogen Inc. This page	100,300	$21,670,818

3 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$21,670,818	100,300	0.0%	Shares	Sole	2026-07-22
2026-03-31	$18,387,999	100,300	+126.4%	Shares	Sole	2026-04-22
2025-12-31	$7,796,357	44,300	—	Shares	Sole	2026-02-13
No filing history on record for this holder in this stock.