iShares S&P 100 ETF
1,004 hedge funds and large institutions have $11.6B invested in iShares S&P 100 ETF in 2026 Q1 according to their latest regulatory filings, with 81 funds opening new positions, 235 increasing their positions, 452 reducing their positions, and 157 closing their positions.
9% less funds holding
Funds holding: 1,098 → 1,004 (-94)
13.73% less ownership
Funds ownership: 79.2% → 65.46% (-14%)
36% less call options, than puts
Call options by funds: $20B | Put options by funds: $31.5B
48% less repeat investments, than reductions
Existing positions increased: 235 | Existing positions reduced: 452
48% less first-time investments, than exits
New positions opened: 81 | Existing positions closed: 157
49% less capital invested
Capital invested by funds: $22.8B → $11.6B (-$11.3B)
55% less funds holding in top 10
Funds holding in top 10: 93 → 42 (-51)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Two Sigma Investments
New York
|
+$167M |
| 2 |
EF
Empowered Funds
Havertown,
Pennsylvania
|
+$26.2M |
| 3 |
QFA
Quantum Financial Advisors
El Segundo,
California
|
+$15.8M |
| 4 |
JF
Jump Financial
Chicago,
Illinois
|
+$14.4M |
| 5 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$12.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Envestnet Asset Management
Chicago,
Illinois
|
-$3.43B |
| 2 |
LPL Financial
San Diego,
California
|
-$1.11B |
| 3 |
Morgan Stanley
New York
|
-$427M |
| 4 |
BlackRock
New York
|
-$426M |
| 5 |
JP Morgan Chase
New York
|
-$381M |
OEF Hedge Fund Activity: Q1 2026 in Review
1,004 of the 8,177 institutional investors tracked by Wall St. Rank reported a position in iShares S&P 100 ETF (OEF) for Q1 2026, worth a combined $11.6B — down 49% from $22.8B a quarter earlier.
Sellers outnumbered buyers: 157 funds closed out of OEF and 81 opened new positions — a net loss of 76 holders — while 452 trimmed existing stakes and 235 added.
The largest buyer was Two Sigma Investments, adding an estimated $167M. The largest seller was Envestnet Asset Management, cutting an estimated $3.43B.
- 1,004 institutional investors held iShares S&P 100 ETF (OEF) as of Q1 2026, down from 1,098 in Q4 2025.
- Funds reported $11.6B of iShares S&P 100 ETF stock for Q1 2026, down 49% quarter-over-quarter.
- 81 funds opened new iShares S&P 100 ETF positions in Q1 2026 and 157 closed out, a net change of -76 holders.
- The largest iShares S&P 100 ETF buyer in Q1 2026 was Two Sigma Investments, an estimated $167M added.
- The largest iShares S&P 100 ETF seller in Q1 2026 was Envestnet Asset Management, an estimated $3.43B sold.
Based on aggregated 13F filings for Q1 2026.