Rhenman & Partners Asset Management AB

Position in BIIB — Biogen Inc.

CIK 1599882 Stockholm, V7

Position in BIIB

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$20,493,291

+$491,988 QoQ

Shares Held

94,850

-13.1% QoQ

Ownership

0.064%

of shares outstanding

% of Portfolio

1.93%

of 13F equity value

Holder Rank

#118

of 1,036 holders

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

Rhenman & Partners Asset Management AB holds $173,015,372 across 8 Drug Manufacturers - General names. BIIB ranks #6 (11.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AZN	Astrazeneca PLC	151,500	$28,727,430
2	MRK	Merck & Co., Inc.	213,500	$27,434,750
3	LLY	ELI LILLY & Co	22,315	$26,765,282
4	ABBV	AbbVie Inc.	96,775	$24,352,461
5	GILD	Gilead Sciences, Inc.	178,250	$22,520,105
6	BIIB	Biogen Inc. This page	94,850	$20,493,291
7	JNJ	Johnson & Johnson	72,500	$18,412,825
8	AMGN	Amgen Inc	11,900	$4,309,228

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$20,493,291	94,850	-13.1%	Shares	Sole	2026-08-13
2026-03-31	$20,001,303	109,100	+18.1%	Shares	Sole	2026-05-14
2025-12-31	$16,252,676	92,350	+67.9%	Shares	Sole	2026-02-13
2025-09-30	$7,704,400	55,000	+358.3%	Shares	Sole	2025-11-13
2025-06-30	$1,507,080	12,000	-75.8%	Shares	Sole	2025-08-13
2025-03-31	$6,773,580	49,500	-60.0%	Shares	Sole	2025-05-14
2024-12-31	$18,916,204	123,700	+84.4%	Shares	Sole	2025-02-13
2024-09-30	$13,006,664	67,100	-20.9%	Shares	Sole	2024-11-13
2024-06-30	$19,658,336	84,800	+49.3%	Shares	Sole	2024-08-13
2024-03-31	$12,247,784	56,800	-3.2%	Shares	Sole	2024-05-14
2023-12-31	$15,182,553	58,672	+3.8%	Shares	Sole	2024-02-13
2023-09-30	$14,521,065	56,500	-12.4%	Shares	Sole	2023-11-13
2023-06-30	$18,372,825	64,500	+35.8%	Shares	Sole	2023-08-11
2023-03-31	$13,206,425	47,500	+58.3%	Shares	Sole	2023-05-12
2022-12-31	$8,307,600	30,000	-8.5%	Shares	Sole	2023-02-13
2022-09-30	$8,752,794	32,782	+118.5%	Shares	Sole	2022-11-14
2022-03-31	$3,159,000	15,000	-87.0%	Shares	Sole	2022-05-13
2021-12-31	$27,590,800	115,000	-23.3%	Shares	Sole	2022-02-11
2021-09-30	$42,448,500	150,000	+66.7%	Shares	Sole	2021-11-12
2021-06-30	$31,164,300	90,000	+361.5%	Shares	Sole	2021-08-13
2021-03-31	$5,455,125	19,500	-51.2%	Shares	Sole	2021-05-14
2020-12-31	$9,794,400	40,000	+21.2%	Shares	Sole	2021-01-19
2020-09-30	$9,361,440	33,000	+94.1%	Shares	Sole	2020-10-13
2020-06-30	$4,548,350	17,000	-32.0%	Shares	Sole	2020-07-16
2020-03-31	$7,909,500	25,000	—	Shares	Sole	2020-04-16
No filing history on record for this holder in this stock.