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ILMN Institutional Ownership & 13F Holders | SmartMoneyDB

ILMNILLUMINA INC

COM · CUSIP 452327109

Smart Money Ownership

Of the 14 tracked institutions holding ILMN, 8 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +4.1pt. It's a gauge of who owns the name, not just how many.

$119.9M · 0.2% of book

+10.2pt

Cathie Wood

$139.2M · 1.1% of book

ILMN (ILLUMINA INC) Institutional Ownership Summary

Among the 14 tracked institutional investors we monitor, ILMN (ILLUMINA INC) is held with a combined value of $6.32B across 50,394,152 shares. The largest holder is BlackRock, Inc. with a position worth $2.34B (0.04% of their portfolio). 2 funds opened new positions in the most recent quarter. 6 funds increased their holdings. 6 funds reduced their position.

Total Institutional Value

$6.32B

Total Shares Held

50,394,152

Institutional Holders

% of Shares Outstanding

33.3%

of 151.30M shares · SEC 2026-04-24

Days to Cover

3.7-17.8%

7.57M shares short · FINRA 2026-06-30

Tracked 13F institutions hold 33.3% of ILMN's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-04-24), not a live float.

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

BlackRock, Inc.+4% shares~$85.8M WELLINGTON MANAGEMENT GROUP LLP+378% shares~$60.9M STATE STREET CORP+4% shares~$29.7M MILLENNIUM MANAGEMENT LLC+133% shares~$16.8M Point72 Asset Management, L.P.New position~$6.6M

13F Institutional Holders

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AQR CAPITAL MANAGEMENT LLC

ARK Investment Management LLC

1.08% of book-26.7%

$139.22M

RENAISSANCE TECHNOLOGIES LLC

0.19% of book-14.3%

$119.89M

WELLINGTON MANAGEMENT GROUP LLP

0.01% of book+377.5%

$77.03M

Gotham Asset Management, LLC

0.13% of book+8.5%

$42.15M

#	Fund	Value↓	Shares	Portfolio %	Change
1	BlackRock, Inc.	$2.34B	19,023,590	0.04%	+3.8%
2	VANGUARD GROUP INC	$1.88B	14,355,380	0.03%	-1.9%
3	STATE STREET CORP	$792.48M	6,429,344	0.03%	+3.9%
4	AQR CAPITAL MANAGEMENT LLC	$490.71M	3,981,080	0.22%	-10.1%
5	FMR LLC	$190.67M	1,546,861	0.01%	-8.7%
6	BAILLIE GIFFORD & CO	$189.22M	1,535,106	0.19%	-5.6%
7	ARK Investment Management LLC	$139.22M	1,129,459	1.08%	-26.7%
8	RENAISSANCE TECHNOLOGIES LLC	$119.89M	972,642	0.19%	-14.3%
9	WELLINGTON MANAGEMENT GROUP LLP	$77.03M	624,924	0.01%	+377.5%
10	Gotham Asset Management, LLC	$42.15M	341,936	0.13%	+8.5%

Congress Trading

5 members · 17 disclosed trades in ILMN

Member	Type	Amount	Date
Gilbert Cisneros	Buy	$1,001 - $15,000	Feb 10, 2026
Lisa McClain	Sell	$1,001 - $15,000	Oct 31, 2025
Lisa McClain	Sell	$1,001 - $15,000	Oct 30, 2025
Lisa McClain	Buy	$1,001 - $15,000

Frequently Asked Questions

Which institutional investors own the most ILMN stock?

As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of ILMN with a position worth $2.34B, representing 0.04% of their portfolio. In total, 14 institutional investors hold ILMN with a combined value of $6.32B.

Are hedge funds buying or selling ILMN?

In the most recent quarter, 2 funds opened a new position in ILMN. Additionally, 6 increased their holdings and 6 reduced their positions.

What percentage of ILMN is owned by institutional investors?

Institutional investors hold $6.32B worth of ILMN stock across 14 positions. The largest institutional holder is BlackRock, Inc. with $2.34B in holdings.

What is a 13F filing and why does it matter for ILMN?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ILMN, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track ILMN institutional moves

Get notified when hedge funds change their ILMN positions.