ILLUMINA INC (ILMN) Institutional Ownership Changes & 13F Activity

ILLUMINA INC (ILMN). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include ARK Invest, Renaissance Technologies LLC, Triple Frond Partners, Sequoia Financial Advisors, and AKO Capital.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026ARK InvestSell-410,8921,129,459$139,217,163
Q1 2026Renaissance Technologies LLCSell-162,000972,642$119,887,853
Q1 2026Triple Frond PartnersSell-67,700306,460$37,774
Q1 2026Sequoia Financial AdvisorsBuy1,3318,128$1,001,798
Q4 2025ARK InvestBuy72,4721,540,351$202,032,394
Q4 2025Renaissance Technologies LLCSell-70,3001,134,642$148,819,645
Q4 2025Triple Frond PartnersSell-16,440374,160$49,075
Q4 2025Sequoia Financial AdvisorsBuy6016,797$891,457
Q3 2025Triple Frond PartnersBuy390,600390,600$37,095
Q3 2025ARK InvestBuy299,8011,467,879$139,404,511
Q3 2025Renaissance Technologies LLCBuy183,0821,204,942$114,433,342
Q3 2025Sequoia Financial AdvisorsBuy2376,196$588,407
Q2 2025AKO CapitalSell-355,760533,954$50,945
Q2 2025ARK InvestBuy272,7591,168,078$111,446,333
Q2 2025Renaissance Technologies LLCSell-67,7001,021,860$97,495,663
Q2 2025Sequoia Financial AdvisorsBuy1,8685,959$568,511
Q1 2025AKO CapitalBuy394,428889,714$70,590
Q1 2025ARK InvestBuy208,989895,319$71,034,619
Q1 2025Renaissance Technologies LLCBuy184,7001,089,560$86,445,690
Q1 2025Icahn Capital ManagementBuy180,000220,000$17,454,800
Q1 2025Thunderbird PartnersBuy63,249152,073$12,065,472
Q1 2025Sequoia Financial AdvisorsSell-1,6424,091$324,593
Q4 2024ARK InvestBuy635,745686,330$91,714,265
Q4 2024AKO CapitalBuy495,286495,286$66,185
Q4 2024Icahn Capital ManagementSell-390,00040,000$5,345,200
Q4 2024Renaissance Technologies LLCSell-179,100904,860$120,916,442
Q4 2024Thunderbird PartnersBuy88,82488,824$11,869,551
Q4 2024Sequoia Financial AdvisorsBuy7895,733$766,123
Q3 2024Renaissance Technologies LLCBuy83,6421,083,960$141,359,224
Q3 2024Sequoia Financial AdvisorsBuy3074,944$644,768

Frequently asked questions about ILMN activity

  • Which institutional owners are buying ILMN?

    Institutional owners buying ILMN include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ILMN activity?

    "Buy" means an investor increased their reported position in ILMN compared to the prior reporting period. This reflects growing exposure to ILLUMINA INC (ILMN) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ILMN increasing?

    Institutional interest in ILMN can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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