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 2025Wedgewood PartnersBuy3,7147,588$3,032,317
Q1 2025Sequoia Financial AdvisorsBuy2,93223,502$8,486,277
Q1 2025Matrix Advisors Value FundBuy74320,850$7,529,030
Q1 2025ARK InvestSell-32952$18,671
Q1 2025Matrix Private Capital GroupSell-305,012$1,809,951
Q4 2024Polen Capital ManagementBuy341,413503,619$202,243,438
Q4 2024Renaissance Technologies LLCBuy14,60017,500$7,027,650
Q4 2024Mairs & Power Growth FundSell-4,7991,746$701,159
Q4 2024Sequoia Financial AdvisorsBuy3,97020,570$8,260,550
Q4 2024Wedgewood PartnersBuy2,5353,874$1,555,721
Q4 2024Matrix Advisors Value FundBuy69520,107$8,074,618
Q4 2024ARK InvestBuy349381$152,866
Q4 2024Matrix Private Capital GroupSell-1095,042$2,024,836
Q3 2024Polen Capital ManagementSell-135,597162,206$60,889,073
Q3 2024Matrix Advisors Value FundBuy2,09019,412$7,287,014
Q3 2024Sequoia Financial AdvisorsBuy1,42416,600$6,231,170
Q3 2024ARK InvestSell-20132$12,076
Q3 2024Torray FundSell-1601,138$427,182
Q3 2024Matrix Private Capital GroupBuy15,151$1,933,540
Q2 2024Polen Capital ManagementBuy222,017297,803$108,552,096
Q2 2024Torray FundSell-160,9471,298$473,134
Q2 2024Sequoia Financial AdvisorsBuy4,05115,176$5,531,852
Q2 2024Matrix Advisors Value FundBuy56917,322$6,314,000
Q2 2024ARK InvestBuy111233$84,754
Q2 2024Matrix Private Capital GroupBuy965,150$1,877,403
Q1 2024Polen Capital ManagementSell-339,60975,786$25,543,796
Q1 2024Torray FundBuy160,947162,245$437,491
Q1 2024Matrix Advisors Value FundBuy1,45016,753$5,646,594
Q1 2024Sequoia Financial AdvisorsSell-1,31011,125$3,749,720
Q1 2024ARK InvestBuy27122$41,115

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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