Illumina Ownership | Who Owns Illumina?

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Illumina Ownership Summary

Illumina is owned by 63.05% institutional investors, 0.21% insiders, and 36.74% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 12.43% of ILMN shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.41% of its assets in Illumina shares.

ILMN Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Illumina	63.05%	0.21%	36.74%
Sector	Healthcare Stocks	35.58%	11.87%	52.55%
Industry	Diagnostics & Research Stocks	50.92%	10.77%	38.30%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	19.02M	12.43%	$2.34B
Blackrock	18.07M	11.37%	$1.89B
Capital world investors	15.55M	10.16%	$1.92B
Vanguard group	14.36M	9.20%	$1.88B
State street	6.43M	4.20%	$792.48M
Wcm investment management	5.92M	3.87%	$715.58M
Aqr capital management	3.98M	2.60%	$490.71M
Corvex management lp	3.83M	2.50%	$472.04M
Sessa capital im	3.28M	2.14%	$403.78M
Geode capital management	3.05M	1.99%	$375.14M

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	18.77%	$472.04M
Sessa capital im	3.28M	7.33%	$403.78M
Kids capital management	58.00K	6.76%	$7.15M
Senvest management	1.54M	6.32%	$190.38M
Guardcap asset management	887.51K	6.28%	$109.73M
Southpoint capital advisors lp	2.10M	5.33%	$258.85M
Casdin capital	530.00K	4.95%	$65.33M
Ion asset management	394.00K	4.11%	$37.42M
Eagle health investments lp	187.41K	4.04%	$23.10M

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	18.07M	0.04%	4.26M
Wcm investment management	5.92M	1.63%	1.85M
Vanguard fiduciary trust	944.16K	0.03%	944.16K
Vaughan nelson investment management	863.72K	1.07%	863.72K
Alliancebernstein	1.09M	0.05%	854.75K

Top Sellers

Holder	Shares	% Assets	Change
Capital world investors	15.55M	0.26%	-4.55M
Loomis sayles & co l p	2.94M	0.49%	-1.23M
Nuveen asset management	984.13K	0.04%	-1.09M
Artisan partners limited partnership	-	-	-1.05M
Soma equity partners lp	-	-	-933.75K

New Positions

Holder	Shares	% Assets	Change	Value
Vanguard fiduciary trust	944.16K	0.03%	944.16K	$116.38M
Vaughan nelson investment management	863.72K	1.07%	863.72K	$106.46M
Norges bank	540.13K	0.01%	540.13K	$70.84M
Samlyn capital	326.00K	0.69%	326.00K	$40.18M
Lmr partners llp	311.05K	0.08%	311.05K	$38.34M

Sold Out

Holder	Change
Kingdom financial group llc.	-1.00
Goalvest advisory	-1.00
West branch capital	-1.00
Hm payson	-1.00
Abound wealth management	-1.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	616	-31.02%	96,466,028	-39.00%	63	0.61%	268	-43.46%	217	-20.22%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Mid-Cap ETF	5.16M	3.41%	-2.61K
Vanguard US Total Market Shares ETF	5.04M	3.19%	3.78K
Vanguard Total Stock Mkt Idx Inv	4.63M	3.06%	24.47K
American Funds American Balanced A	3.59M	2.36%	997.09K
American Funds Growth Fund of Amer A	3.46M	2.28%	-2.75M
Capital Group Growth Fnd of Amer Comp	3.46M	2.28%	-2.75M
Vanguard Small Cap Index	3.35M	2.21%	-7.35K
Edgewood Growth Instl	3.51M	2.21%	-150.34K
Invesco QQQ Trust	3.16M	1.99%	-
Capital Group New Economy Comp	2.78M	1.83%	108.17K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jun 05, 2026	Leckman Patricia	SVP, Chief People Officer	Sell	$6.43K
Jun 05, 2026	Leckman Patricia	SVP, Chief People Officer	Sell	$46.92K
Jun 05, 2026	Leckman Patricia	SVP, Chief People Officer	Sell	$60.88K
Jun 05, 2026	Leckman Patricia	SVP, Chief People Officer	Sell	$12.74K
Jun 05, 2026	Leckman Patricia	SVP, Chief People Officer	Sell	$335.76

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	33
2026 Q1	1	2
2025 Q4	1	2
2025 Q3	-	-
2025 Q2	8	-

ILMN Ownership FAQ

Who Owns Illumina?

Illumina shareholders are primarily institutional investors at 63.05%, followed by 0.21% insiders and 36.74% retail investors. The average institutional ownership in Illumina's industry, Diagnostics & Research Stocks, is 50.92%, which Illumina exceeds.

Who owns the most shares of Illumina?

Illumina’s largest shareholders are Blackrock funding, inc. /de (19.02M shares, 12.43%), Blackrock (18.07M shares, 11.37%), and Capital world investors (15.55M shares, 10.16%). Together, they hold 33.96% 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?

iShares Core S&P Mid-Cap ETF is the top mutual fund holder of Illumina shares, with 3.41% of its total shares outstanding invested in 5.16M Illumina shares.

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