iShares Russell 1000 ETF
1,423 hedge funds and large institutions have $36B invested in iShares Russell 1000 ETF in 2025 Q3 according to their latest regulatory filings, with 99 funds opening new positions, 378 increasing their positions, 497 reducing their positions, and 39 closing their positions.
263% more call options, than puts
Call options by funds: $23.2M | Put options by funds: $6.4M
154% more first-time investments, than exits
New positions opened: 99 | Existing positions closed: 39
107% more capital inflows, than outflows
Capital inflows: $1.75B | Capital outflows: $849M
2% more funds holding
Funds holding: 1,395 → 1,423 (+28)
0.5% more ownership
Funds ownership: 79.75% → 80.24% (+0.5%)
0% more funds holding in top 10
Funds holding in top 10: 98 → 98 (0)
24% less repeat investments, than reductions
Existing positions increased: 378 | Existing positions reduced: 497
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Morgan Stanley
New York
|
+$382M |
| 2 |
Focus Partners Wealth
Boston,
Massachusetts
|
+$284M |
| 3 |
Allstate Corporation
Northbrook,
Illinois
|
+$154M |
| 4 |
Jones Financial Companies
Des Peres,
Missouri
|
+$151M |
| 5 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$63.9M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Bank of America
Charlotte,
North Carolina
|
-$126M |
| 2 |
Envestnet Asset Management
Chicago,
Illinois
|
-$95.5M |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
-$55.8M |
| 4 |
Catalyst Capital Advisors
Huntington,
New York
|
-$42.6M |
| 5 |
Millburn Ridgefield Corp
New York
|
-$42.6M |
IWB Hedge Fund Activity: Q3 2025 in Review
1,423 of the 7,661 institutional investors tracked by Wall St. Rank reported a position in iShares Russell 1000 ETF (IWB) for Q3 2025, worth a combined $36B — up 8.9% from $33B a quarter earlier.
Buyers outnumbered sellers: 99 funds opened new IWB positions and 39 closed out — a net gain of 60 holders — while 378 added to existing stakes and 497 trimmed.
The largest buyer was Morgan Stanley, adding an estimated $382M. The largest seller was Bank of America, cutting an estimated $126M.
- 1,423 institutional investors held iShares Russell 1000 ETF (IWB) as of Q3 2025, up from 1,395 in Q2 2025.
- Funds reported $36B of iShares Russell 1000 ETF stock for Q3 2025, up 8.9% quarter-over-quarter.
- 99 funds opened new iShares Russell 1000 ETF positions in Q3 2025 and 39 closed out, a net change of +60 holders.
- The largest iShares Russell 1000 ETF buyer in Q3 2025 was Morgan Stanley, an estimated $382M added.
- The largest iShares Russell 1000 ETF seller in Q3 2025 was Bank of America, an estimated $126M sold.
Based on aggregated 13F filings for Q3 2025.