Illumina Ownership | Who Owns Illumina?

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Illumina Ownership Summary

Illumina is owned by 97.96% institutional investors, 0.19% insiders, and 1.85% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 12.25% of ILMN shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.35% of its assets in Illumina shares.

ILMN Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Illumina	97.96%	0.19%	1.85%
Sector	Healthcare Stocks	487.91%	11.08%	-398.99%
Industry	Diagnostics & Research Stocks	57.29%	10.84%	31.88%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	19.36M	12.25%	$1.85B
Blackrock	18.07M	11.37%	$1.89B
Capital world investors	16.65M	10.54%	$1.59B
Vanguard group	15.81M	9.95%	$2.11B
State street	5.60M	3.52%	$584.23M
Sessa capital im	4.72M	2.99%	$450.61M
Wcm investment management	4.43M	2.80%	$419.59M
Loomis sayles & co l p	4.23M	2.67%	$403.16M
Corvex management lp	3.83M	2.42%	$365.38M
Bank of new york mellon	3.40M	2.14%	$454.62M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Thunderbird partners llp	88.82K	19.20%	$11.87M
Nan fung group	119.20K	17.93%	$11.37M
Corvex management lp	3.83M	15.47%	$365.38M
Sessa capital im	4.72M	13.20%	$450.61M
Eagle health investments lp	343.36K	11.25%	$45.88M
Casdin capital	645.00K	5.60%	$61.54M
Senvest management	1.38M	4.42%	$131.91M
Pointstate capital lp	2.95M	4.29%	$281.49M
Ion asset management	750.92K	3.94%	$71.65M
Spyglass capital management	698.57K	3.93%	$66.65M

Top Buyers

Holder	Shares	% Assets	Change
Sessa capital im	4.72M	13.20%	4.72M
Blackrock	18.07M	0.04%	4.26M
Norges bank	1.71M	0.03%	1.71M
Pacer advisors	649.29K	0.16%	649.29K
Blackrock funding, inc. /de	19.36M	0.04%	620.76K

Top Sellers

Holder	Shares	% Assets	Change
Capital world investors	16.65M	0.23%	-2.25M
Brown advisory	725.99K	0.09%	-2.18M
Morgan stanley	1.95M	0.02%	-1.66M
State street	5.60M	0.03%	-1.22M
Nuveen asset management	984.13K	0.04%	-1.09M

New Positions

Holder	Shares	% Assets	Change	Value
Sessa capital im	4.72M	13.20%	4.72M	$450.61M
Norges bank	1.71M	0.03%	1.71M	$228.71M
Virginia retirement systems et al	273.11K	0.17%	273.11K	$25.94M
Eversept partners, lp	198.58K	1.74%	198.58K	$18.95M
Symphony financial	110.59K	0.22%	110.59K	$10.55M

Sold Out

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

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Sep 30, 2024	826	5.22%	140,424,974	-0.01%	88	1.13%	414	12.81%	271	-4.24%
Jun 30, 2024	774	-5.49%	140,128,785	-1.54%	88	1.10%	364	-10.57%	277	5.73%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Mid-Cap ETF	5.15M	3.35%	-
American Funds Growth Fund of Amer A	5.04M	3.19%	-1.72M
Capital Group Growth Fnd of Amer Comp	5.04M	3.19%	-1.72M
Vanguard US Total Market Shares ETF	5.04M	3.19%	3.78K
Vanguard Total Stock Mkt Idx Inv	4.73M	3.08%	-116.12K
Vanguard Small Cap Index	3.65M	2.38%	-23.35K
Edgewood Growth Instl	3.51M	2.21%	-150.34K
Invesco QQQ Trust	3.16M	1.99%	-
Vanguard Small Cap Value Index Inv	2.35M	1.53%	8.01K
American Funds American Balanced A	2.23M	1.41%	400.22K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 12, 2025	Dhingra Ankur	SVP, Chief Financial Officer	Buy	$495.38K
May 13, 2025	Thaysen Jacob	Chief Executive Officer	Buy	$399.14K
May 13, 2025	Thaysen Jacob	Chief Executive Officer	Buy	$8.23K
May 13, 2025	Thaysen Jacob	Chief Executive Officer	Buy	$65.57K
May 12, 2025	Thaysen Jacob	Chief Executive Officer	Buy	$16.53K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	-
2025 Q3	-	-
2025 Q2	8	-
2025 Q1	-	-
2024 Q4	-	-

ILMN Ownership FAQ

Who Owns Illumina?

Illumina shareholders are primarily institutional investors at 97.96%, followed by 0.19% insiders and 1.85% retail investors. The average institutional ownership in Illumina's industry, Diagnostics & Research Stocks, is 57.29%, which Illumina exceeds.

Who owns the most shares of Illumina?

Illumina’s largest shareholders are Blackrock funding, inc. /de (19.36M shares, 12.25%), Blackrock (18.07M shares, 11.37%), and Capital world investors (16.65M shares, 10.54%). Together, they hold 34.15% 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 3.35% of its total shares outstanding invested in 5.15M Illumina shares.

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