Illumina Ownership | Who Owns Illumina?

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Illumina Ownership Summary

Illumina is owned by 98.10% institutional investors, 0.19% insiders, and 1.71% retail investors. Capital world investors is the largest institutional shareholder, holding 12.64% 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	98.10%	0.19%	1.71%
Sector	Healthcare Stocks	42.54%	10.83%	46.63%
Industry	Diagnostics & Research Stocks	46.31%	10.49%	43.20%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Capital world investors	19.98M	12.64%	$1.90B
Blackrock funding, inc. /de	18.69M	11.83%	$1.77B
Blackrock	18.07M	11.37%	$1.89B
Vanguard group	14.63M	9.26%	$1.39B
State street	6.00M	3.80%	$569.80M
Sessa capital im	4.69M	2.97%	$445.10M
Loomis sayles & co l p	4.29M	2.71%	$407.18M
Wcm investment management	4.18M	2.65%	$384.17M
Corvex management lp	3.83M	2.42%	$363.70M
Geode capital management	2.74M	1.73%	$259.30M

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
Eagle health investments lp	322.26K	8.03%	$30.61M
Kids capital management	100.00K	7.27%	$9.50M
Senvest management	1.41M	4.30%	$134.04M
Casdin capital	525.00K	4.16%	$49.86M
Ion asset management	394.00K	4.11%	$37.42M
Guardcap asset management	1.85M	4.08%	$175.87M
Triple frond partners	390.60K	4.04%	$37.09M

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	18.07M	0.04%	4.26M
Capital world investors	19.98M	0.26%	3.33M
Norges bank	1.71M	0.03%	1.71M
Pacer advisors	649.29K	0.16%	649.29K
Ilex capital partners (uk) llp	682.41K	2.07%	528.29K

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
Norges bank	1.71M	0.03%	1.71M	$228.71M
Triple frond partners	390.60K	4.04%	390.60K	$37.09M
Virginia retirement systems et al	273.11K	0.17%	273.11K	$25.94M
Jupiter asset management	175.76K	0.14%	175.76K	$16.69M
Caisse de depot et placement du quebec	152.44K	0.03%	152.44K	$14.48M

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 %
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%
Sep 30, 2024	826	5.22%	140,424,974	-0.01%	88	1.13%	414	12.81%	271	-4.24%

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
Dec 08, 2025	Wedel Christensen Jakob	SVP, Strategy/Corp Development	Sell	$70.97K
Nov 03, 2025	Gottlieb Scott	-	Buy	$61.06K
May 12, 2025	Dhingra Ankur	SVP, Chief Financial Officer	Buy	$495.38K
May 13, 2025	Thaysen Jacob	Chief Executive Officer	Buy	$8.23K
May 13, 2025	Thaysen Jacob	Chief Executive Officer	Buy	$65.57K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	1	1
2025 Q3	-	-
2025 Q2	8	-
2025 Q1	-	-
2024 Q4	-	-

ILMN Ownership FAQ

Who Owns Illumina?

Illumina shareholders are primarily institutional investors at 98.10%, followed by 0.19% insiders and 1.71% retail investors. The average institutional ownership in Illumina's industry, Diagnostics & Research Stocks, is 46.31%, which Illumina exceeds.

Who owns the most shares of Illumina?

Illumina’s largest shareholders are Capital world investors (19.98M shares, 12.64%), Blackrock funding, inc. /de (18.69M shares, 11.83%), and Blackrock (18.07M shares, 11.37%). Together, they hold 35.84% 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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