MASSACHUSETTS FINANCIAL SERVICES CO /MA/

Position in IONS — Ionis Pharmaceuticals Inc

CIK 912938 Boston, MA

Position in IONS

as of Jun 30, 2026 · filed Aug 3, 2026 Compact

Position Value

$51,682,490

+$1,663,840 QoQ

Shares Held

651,816

-2.1% QoQ

Ownership

0.392%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

#45

of 513 holders

Holding Since

Mar 2023

10 quarters on record

Voting authority Sole 99% Shared 1% None 0%

Healthcare · as of Jun 30, 2026

MASSACHUSETTS FINANCIAL SERVICES CO /MA/ holds $2,249,676,327 across 65 Biotechnology names. IONS ranks #9 (2.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ASND	Ascendis Pharma A/S	1,875,301	$500,180,281
2	RVMD	Revolution Medicines, Inc.	2,012,317	$376,866,725
3	VRTX	Vertex Pharmaceuticals Inc / Ma	423,049	$210,141,127
4	TECH	BIO-TECHNE Corp	2,746,462	$194,037,538
5	SRRK	Scholar Rock Holding Corp	2,607,348	$143,404,140
6	LGND	Ligand Pharmaceuticals Inc	375,762	$118,774,610
7	ALNY	Alnylam Pharmaceuticals, Inc.	350,560	$105,529,075
8	BNTX	BioNTech SE	677,708	$63,060,728

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$51,682,490	651,816	-2.1%	Shares	Sole	2026-08-03
2026-03-31	$50,018,650	666,116	-18.0%	Shares	Defined	2026-05-14
2025-12-31	$64,296,415	812,747	-5.8%	Shares	Sole	2026-01-22
2025-09-30	$56,430,833	862,593	+66.1%	Shares	Sole	2025-10-29
2025-06-30	$20,512,959	519,184	+9204.4%	Shares	Sole	2025-08-08
2024-03-31	$241,893	5,580	-0.2%	Shares	Sole	2024-05-14
2023-12-31	$282,899	5,592	-3.1%	Shares	Sole	2024-02-08
2023-09-30	$261,681	5,769	-78.3%	Shares	Sole	2023-11-08
2023-06-30	$1,088,484	26,529	-2.3%	Shares	Sole	2023-08-09
2023-03-31	$970,448	27,153	—	Shares	Sole	2023-05-10
No filing history on record for this holder in this stock.