Illumina, Inc. (ILMN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

149,624,060Shares Outstanding

476,628Shares held by institutions

$55,531,928Value of institutional holdings

89.31%Institutional ownership %

0.33%Shares Changed QoQ

799No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Illumina, Inc. (NASDAQ:ILMN) currently has 806 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

Illumina saw its institutional ownership percentage fell to 98.6% in December 2025 from 103.1% in September 2025.
In percentage terms, this reflects as a holdings change of 0.75% quarter on quarter, and a decrease of 4.62% year over year.
During the quarter, 442 institutions bought more Illumina shares, 258 sold shares, and 106 of the 806 total investors held their position steady.
The aggregate institutional position in Illumina now stands at 153.79Mn shares as of December 2025, after investors increased their holdings (up by 1.15Mn shares quarter on quarter which is down 1.00Mn shares year over year).
As of December 31, 2025, Capital World Investors held Illumina's largest shareholding position with over 20.10Mn shares, representing 12.89% of total outstanding shares.
Among the most significant buyers of Illumina during December 2025 were AQR CAPITAL MANAGEMENT LLC (1.03Mn), MORGAN STANLEY (1.01Mn), NORDEA INVESTMENT MANAGEMENT AB (911.84K), AMERIPRISE FINANCIAL INC (748.38K), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (560.63K).
Leading sellers of Illumina stock in December 2025 included Sessa Capital IM, L.P. (1.28Mn), PointState Capital LP (1.27Mn), JACOBS LEVY EQUITY MANAGEMENT, INC (697.32K), TEACHER RETIREMENT SYSTEM OF TEXAS (518.36K), WORLDQUANT MILLENNIUM ADVISORS LLC (414.90K).
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), AQR CAPITAL MANAGEMENT LLC (4.43Mn), LOOMIS SAYLES & CO L P (4.17Mn), WCM INVESTMENT MANAGEMENT, LLC (4.07Mn), Corvex Management LP (3.83Mn), Sessa Capital IM, L.P. (3.40Mn), GEODE CAPITAL MANAGEMENT, LLC (2.87Mn).

806 Institutional Holders

476,628 Total Shares Held

Rows:

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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
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	4,426,126	1,028,099	30.26%	$580,530,638.00
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
Corvex Management LP	31 Dec, 2025	3,829,608	0	0.00%	$502,291,385.00
Sessa Capital IM, L.P.	31 Dec, 2025	3,404,059	-1,282,720	-27.37%	$446,476,378.00
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
JANUS HENDERSON GROUP PLC	31 Dec, 2025	2,071,544	41,747	2.06%	$271,702,970.00
PRIMECAP MANAGEMENT CO/CA/	31 Dec, 2025	1,989,679	104,400	5.54%	$260,966,299.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	1,842,348	-50,455	-2.67%	$241,642,364.00
Southpoint Capital Advisors LP	31 Dec, 2025	1,750,464	250,464	16.70%	$229,590,858.00
FMR LLC	31 Dec, 2025	1,694,354	123,631	7.87%	$222,231,446.00
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

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