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 quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2015 | Mairs & Power Growth Fund | Buy | 7,045 | 7,045 | $701 |
| Q4 2015 | Sequoia Financial Advisors | Buy | 162 | 9,809 | $938 |
| Q3 2015 | Polen Capital Management | Sell | -5,416 | 5,068 | $471 |
| Q2 2015 | Polen Capital Management | Sell | -50,902 | 10,484 | $1,038 |
| Q2 2015 | Sequoia Financial Advisors | Sell | -162 | 9,647 | $955 |
| Q1 2015 | Polen Capital Management | Sell | -28,208 | 61,386 | $6,072 |
| Q4 2014 | Polen Capital Management | Buy | 73,852 | 89,594 | $8,566 |
| Q3 2014 | Polen Capital Management | Buy | 2,185 | 15,742 | $1,442 |
| Q3 2014 | Sequoia Financial Advisors | Buy | 443 | 9,809 | $899 |
| Q2 2014 | Polen Capital Management | Buy | 7,736 | 13,557 | $1,233 |
| Q2 2014 | Sequoia Financial Advisors | Sell | -81 | 9,366 | $852 |
| Q1 2014 | Polen Capital Management | Sell | -101,703 | 5,821 | $504 |
| Q1 2014 | Sequoia Financial Advisors | Buy | 478 | 9,447 | $818 |
| Q4 2013 | Polen Capital Management | Buy | 37,157 | 107,524 | $9,242 |
| Q4 2013 | Sequoia Financial Advisors | Buy | 8,969 | 8,969 | $771 |
| Q2 2013 | Polen Capital Management | Buy | 70,367 | 70,367 | $5,118 |
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.