ISHARES RUSSELL 1000 GROWTH (IWF) Institutional Ownership Changes & 13F Activity

ISHARES RUSSELL 1000 GROWTH (IWF) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Polen Capital Management, Renaissance Technologies LLC, Wedgewood Partners, Matrix Advisors Value Fund, and ARK Invest.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Polen Capital ManagementSell-369,223406,863$173,486,508
Q1 2026Renaissance Technologies LLCBuy50,48062,280$26,556,192
Q1 2026Wedgewood PartnersSell-11,495524$223,434
Q1 2026Matrix Advisors Value FundBuy2,56926,756$11,408,712
Q1 2026ARK InvestSell-1,003216$92,260
Q1 2026Sequoia Financial AdvisorsBuy95529,116$12,414,968
Q1 2026Torray FundSell-6071,386$590,990
Q1 2026Matrix Private Capital GroupSell-644,676$1,993,654
Q4 2025Polen Capital ManagementBuy548,235776,086$367,321,352
Q4 2025Renaissance Technologies LLCBuy8,20011,800$5,584,940
Q4 2025Sequoia Financial AdvisorsBuy6,29128,161$13,328,649
Q4 2025Wedgewood PartnersBuy4,43112,019$5,688,621
Q4 2025Torray FundBuy8551,993$943,287
Q4 2025Matrix Advisors Value FundBuy82924,187$11,447,926
Q4 2025ARK InvestBuy4961,219$576,721
Q4 2025Matrix Private Capital GroupSell-704,740$2,243,581
Q3 2025Mairs & Power Growth FundBuy2,4264,172$222,495
Q3 2025Polen Capital ManagementBuy2,242227,851$106,727,454
Q3 2025Renaissance Technologies LLCBuy1,9003,600$1,686,276
Q3 2025Matrix Advisors Value FundBuy36323,358$10,941,526
Q3 2025Sequoia Financial AdvisorsSell-35821,870$10,244,163
Q3 2025ARK InvestBuy13723$338,557
Q3 2025Matrix Private Capital GroupSell-104,810$2,253,054
Q2 2025Polen Capital ManagementSell-159,913225,609$95,788,998
Q2 2025Renaissance Technologies LLCSell-15,8001,700$721,786
Q2 2025Matrix Advisors Value FundBuy2,14522,995$9,763,384
Q2 2025Sequoia Financial AdvisorsSell-1,27422,228$9,437,710
Q2 2025ARK InvestBuy658710$301,626
Q2 2025Matrix Private Capital GroupSell-1924,820$2,046,365
Q1 2025Polen Capital ManagementSell-118,097385,522$139,208,065

Frequently asked questions about IWF activity

  • Which institutional owners are buying IWF?

    Institutional owners buying IWF 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 IWF activity?

    "Buy" means an investor increased their reported position in IWF compared to the prior reporting period. This reflects growing exposure to ISHARES RUSSELL 1000 GROWTH (IWF) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in IWF increasing?

    Institutional interest in IWF 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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