Interactive Brokers
IBKR
999 hedge funds and large institutions have $25.4B invested in Interactive Brokers in 2026 Q1 according to their latest regulatory filings, with 137 funds opening new positions, 403 increasing their positions, 328 reducing their positions, and 105 closing their positions.
39% more call options, than puts
Call options by funds: $394M | Put options by funds: $284M
30% more first-time investments, than exits
New positions opened: 137 | Existing positions closed: 105
23% more repeat investments, than reductions
Existing positions increased: 403 | Existing positions reduced: 328
6% more funds holding in top 10
Funds holding in top 10: 33 → 35 (+2)
2% more funds holding
Funds holding: 978 → 999 (+21)
3% more capital invested
Capital invested by funds: $24.7B → $25.4B (+$724M)
1.05% less ownership
Funds ownership: 86.18% → 85.13% (-1%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$549M |
| 2 |
Two Sigma Investments
New York
|
+$342M |
| 3 |
Capital World Investors
Los Angeles,
California
|
+$216M |
| 4 |
Bessemer Group
Woodbridge,
New Jersey
|
+$171M |
| 5 |
Wellington Management Group
Boston,
Massachusetts
|
+$106M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
OAG
Orbis Allan Gray
Hamilton,
Bermuda
|
-$225M |
| 2 |
Marshall Wace
London,
United Kingdom
|
-$166M |
| 3 |
CCM
Cantillon Capital Management
New York
|
-$108M |
| 4 |
Kayne Anderson Rudnick Investment Management
Los Angeles,
California
|
-$85M |
| 5 |
Neuberger Berman Group
New York
|
-$63.1M |
IBKR Hedge Fund Activity: Q1 2026 in Review
999 of the 8,187 institutional investors tracked by Wall St. Rank reported a position in Interactive Brokers (IBKR) for Q1 2026, worth a combined $25.4B — up 2.9% from $24.7B a quarter earlier.
Buyers outnumbered sellers: 137 funds opened new IBKR positions and 105 closed out — a net gain of 32 holders — while 403 added to existing stakes and 328 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $549M. The largest seller was Orbis Allan Gray, cutting an estimated $225M.
- 999 institutional investors held Interactive Brokers (IBKR) as of Q1 2026, up from 978 in Q4 2025.
- Funds reported $25.4B of Interactive Brokers stock for Q1 2026, up 2.9% quarter-over-quarter.
- 137 funds opened new Interactive Brokers positions in Q1 2026 and 105 closed out, a net change of +32 holders.
- The largest Interactive Brokers buyer in Q1 2026 was Fidelity Investments, an estimated $549M added.
- The largest Interactive Brokers seller in Q1 2026 was Orbis Allan Gray, an estimated $225M sold.
Based on aggregated 13F filings for Q1 2026.