Illumina Ownership | Who Owns Illumina?

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Illumina Ownership Summary

Illumina is owned by 75.88% institutional investors, 0.19% insiders, and 23.93% retail investors. Capital world investors is the largest institutional shareholder, holding 13.14% of ILMN shares. Capital Group Growth Fnd of Amer Comp is the top mutual fund, with 4.06% of its assets in Illumina shares.

ILMN Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Illumina	75.88%	0.19%	23.93%
Sector	Healthcare Stocks	232.01%	10.74%	-142.75%
Industry	Diagnostics & Research Stocks	35.38%	11.00%	53.62%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Capital world investors	20.10M	13.14%	$2.64B
Blackrock funding, inc. /de	18.32M	11.97%	$2.40B
Blackrock	18.07M	11.37%	$1.89B
Vanguard group	14.36M	9.20%	$1.88B
State street	6.00M	3.80%	$569.80M
Sessa capital im	4.69M	2.97%	$445.10M
Loomis sayles & co l p	4.17M	2.73%	$547.16M
Wcm investment management	4.07M	2.66%	$540.47M
Corvex management lp	3.83M	2.42%	$363.70M
Geode capital management	2.87M	1.88%	$375.26M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Thunderbird partners llp	88.82K	19.20%	$11.87M
Corvex management lp	3.83M	12.06%	$363.70M
Sessa capital im	4.69M	10.53%	$445.10M
Kids capital management	100.00K	7.27%	$9.50M
Eagle health investments lp	231.16K	6.66%	$30.32M
Senvest management	1.40M	5.70%	$183.87M
Guardcap asset management	1.58M	5.53%	$206.94M
Triple frond partners	374.16K	5.10%	$49.08M
Casdin capital	525.00K	4.16%	$49.86M
Ion asset management	394.00K	4.11%	$37.42M

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	18.07M	0.04%	4.26M
Morgan stanley	2.53M	0.02%	1.01M
Nordea investment management ab	944.50K	0.11%	911.84K
Massachusetts financial services co /ma/	560.63K	0.02%	560.63K
Norges bank	540.13K	0.01%	540.13K

Top Sellers

Holder	Shares	% Assets	Change
Pointstate capital lp	1.80M	2.55%	-1.15M
Nuveen asset management	984.13K	0.04%	-1.09M
Artisan partners limited partnership	-	-	-1.05M
Soma equity partners lp	-	-	-933.75K
Millennium management	531.49K	0.03%	-932.66K

New Positions

Holder	Shares	% Assets	Change	Value
Massachusetts financial services co /ma/	560.63K	0.02%	560.63K	$73.53M
Norges bank	540.13K	0.01%	540.13K	$70.84M
Caisse de depot et placement du quebec	152.44K	0.03%	152.44K	$14.48M
Glenview capital management	101.72K	0.21%	101.72K	$9.66M
Thunderbird partners llp	88.82K	19.20%	88.82K	$11.87M

Sold Out

Holder	Change
Abound wealth management	-1.00
Goalvest advisory	-1.00
West branch capital	-1.00
Hm payson	-1.00
Kohmann bosshard financial services	-1.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	667	-17.65%	118,376,620	-24.68%	75	0.77%	350	-7.65%	200	-27.27%
Sep 30, 2025	769	0.79%	154,998,047	3.40%	98	1.09%	356	-11.44%	266	18.22%
Jun 30, 2025	759	0.53%	154,779,844	-0.01%	97	1.03%	406	17.00%	222	-20.14%
Mar 31, 2025	746	-16.27%	154,758,191	0.16%	97	1.03%	341	-17.03%	278	-7.64%
Dec 31, 2024	810	-2.88%	144,795,665	2.90%	91	1.16%	373	-10.77%	273	0.37%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Capital Group Growth Fnd of Amer Comp	6.21M	4.06%	569.88K
American Funds Growth Fund of Amer A	6.21M	4.06%	569.88K
iShares Core S&P Mid-Cap ETF	4.93M	3.23%	-117.43K
Vanguard US Total Market Shares ETF	5.04M	3.19%	3.78K
Vanguard Total Stock Mkt Idx Inv	4.57M	2.99%	9.96K
Edgewood Growth Instl	3.51M	2.21%	-150.34K
Vanguard Small Cap Index	3.29M	2.15%	-533.00
Invesco QQQ Trust	3.16M	1.99%	-
Capital Group New Economy Comp	2.67M	1.75%	-
American Funds New Economy A	2.67M	1.75%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Feb 20, 2026	Davies Scott M	Chief Legal Officer	Sell	$155.22K
Feb 18, 2026	Leckman Patricia	SVP, Chief People Officer	Sell	$275.35K
Feb 09, 2026	Gottlieb Scott	-	Buy	$23.56K
Dec 12, 2025	Davies Scott M	Chief Legal Officer	Sell	$43.96K
Dec 08, 2025	Wedel Christensen Jakob	SVP, Strategy/Corp Development	Sell	$70.97K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	1	1
2025 Q4	1	2
2025 Q3	-	-
2025 Q2	8	-
2025 Q1	-	-

ILMN Ownership FAQ

Who Owns Illumina?

Illumina shareholders are primarily institutional investors at 75.88%, followed by 0.19% insiders and 23.93% retail investors. The average institutional ownership in Illumina's industry, Diagnostics & Research Stocks, is 35.38%, which Illumina exceeds.

Who owns the most shares of Illumina?

Illumina’s largest shareholders are Capital world investors (20.1M shares, 13.14%), Blackrock funding, inc. /de (18.32M shares, 11.97%), and Blackrock (18.07M shares, 11.37%). Together, they hold 36.48% of Illumina’s total shares outstanding.

Does Blackrock own Illumina?

Yes, BlackRock owns 11.37% of Illumina, totaling 18.07M shares as of Jun 2024. This represents 0.04% of BlackRock's total assets, with a market value of 1.89B$. In the last quarter, BlackRock increased its holdings by 4.26M shares, a 30.86% change.

Who is Illumina’s biggest shareholder by percentage of total assets invested?

Thunderbird partners llp is Illumina’s biggest shareholder by percentage of total assets invested, with 19.20% of its assets in 88.82K Illumina shares, valued at 11.87M$.

Who is the top mutual fund holder of Illumina shares?

Capital Group Growth Fnd of Amer Comp is the top mutual fund holder of Illumina shares, with 4.06% of its total shares outstanding invested in 6.21M Illumina shares.

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