Illumina, Inc. (ILMN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

155,963,303Shares Outstanding

1,686,469Shares held by institutions

$196,996,444Value of institutional holdings

78.59%Institutional ownership %

1.54%Shares Changed QoQ

681No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 681 institutional investors hold a position in Illumina, Inc. (NASDAQ:ILMN).

Institutional ownership in Illumina edged down to 78.6% in December 2025, compared to 103.0% in September 2025.
Quarterly data indicates a 1.54% shift in institutional share volume, and the annual owner count reflects a decrease of 19.41%.
During the quarter, 371 institutions bought more Illumina shares, 214 sold shares, and 96 of the 681 total investors held their position steady.
This class of investors increased its holdings in Illumina to 122.57Mn shares for the 13F-cycle ending December 2025, up by 1.86Mn shares quarter on quarter, and down 32.23Mn shares year over year.
The top institutional stake in Illumina as of December 31, 2025 belongs to Capital World Investors, which owns 20.10Mn shares, or 12.89% of the company.
Among the most significant buyers of Illumina during December 2025 were MORGAN STANLEY (1.01Mn), NORDEA INVESTMENT MANAGEMENT AB (911.84K), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (560.63K), NORGES BANK (540.13K), FIRST TRUST ADVISORS LP (405.65K).
Leading sellers of Illumina stock in December 2025 included JACOBS LEVY EQUITY MANAGEMENT, INC (697.32K), TEACHER RETIREMENT SYSTEM OF TEXAS (518.36K), BlackRock, Inc. (364.91K), SCHRODER INVESTMENT MANAGEMENT GROUP (340.87K), JANE STREET GROUP, LLC (307.92K).
The top 10 institutional holders of Illumina for the quarter ending December 2025 included Capital World Investors (20.10Mn), BlackRock, Inc. (18.32Mn), VANGUARD GROUP INC (14.36Mn), STATE STREET CORP (6.19Mn), LOOMIS SAYLES & CO L P (4.17Mn), WCM INVESTMENT MANAGEMENT, LLC (4.07Mn), GEODE CAPITAL MANAGEMENT, LLC (2.87Mn), MORGAN STANLEY (2.53Mn), PRIMECAP MANAGEMENT CO/CA/ (1.99Mn), BAILLIE GIFFORD & CO (1.63Mn).

681 Institutional Holders

1,686,469 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Capital World Investors	31 Dec, 2025	20,101,173	124,323	0.62%	$2,636,483,169.00
BlackRock, Inc.	31 Dec, 2025	18,321,677	-364,907	-1.95%	$2,403,071,143.00
VANGUARD GROUP INC	31 Dec, 2025	14,355,380	-272,500	-1.86%	$1,882,851,641.00
STATE STREET CORP	31 Dec, 2025	6,190,114	190,324	3.17%	$811,895,352.00
LOOMIS SAYLES & CO L P	31 Dec, 2025	4,171,720	-115,708	-2.70%	$547,162,803.00
WCM INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	4,071,325	-110,356	-2.64%	$540,468,394.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,869,047	130,139	4.75%	$375,260,358.00
MORGAN STANLEY	31 Dec, 2025	2,529,045	1,005,474	65.99%	$331,709,792.00
PRIMECAP MANAGEMENT CO/CA/	31 Dec, 2025	1,989,679	104,400	5.54%	$260,966,299.00
BAILLIE GIFFORD & CO	31 Dec, 2025	1,626,776	-59,916	-3.55%	$213,367,940.00
Bank of New York Mellon Corp	31 Dec, 2025	1,623,435	-57,611	-3.43%	$212,929,701.00
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	31 Dec, 2025	1,587,573	-2,341	-0.15%	$208,226,074.00
GUARDCAP ASSET MANAGEMENT Ltd	31 Dec, 2025	1,576,637	-275,161	-14.86%	$206,937,778.00
ARK Investment Management LLC	31 Dec, 2025	1,540,351	72,472	4.94%	$202,032,394.00
UBS Group AG	31 Dec, 2025	1,527,823	32,847	2.20%	$200,389,265.00
Senvest Management, LLC	31 Dec, 2025	1,401,881	-9,500	-0.67%	$183,870,712.00
Sumitomo Mitsui Trust Group, Inc.	31 Dec, 2025	1,254,595	-35,215	-2.73%	$164,552,680.00
PGGM Investments	31 Dec, 2025	1,149,408	0	0.00%	$150,756.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	1,134,642	-70,300	-5.83%	$148,819,645.00
Legal & General Group Plc	31 Dec, 2025	1,128,669	-116,019	-9.32%	$148,036,226.00

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