Calamos Bitcoin Structured Alt Protection ETF - October
CBOO
8 hedge funds and large institutions have $2.49M invested in Calamos Bitcoin Structured Alt Protection ETF - October in 2026 Q1 according to their latest regulatory filings, with 1 funds opening new positions, 4 increasing their positions, 2 reducing their positions, and 3 closing their positions.
100% more repeat investments, than reductions
Existing positions increased: 4 | Existing positions reduced: 2
20% less funds holding
Funds holding: 10 → 8 (-2)
24.19% less ownership
Funds ownership: 58.25% → 34.06% (-24%)
67% less first-time investments, than exits
New positions opened: 1 | Existing positions closed: 3
75% less capital inflows, than outflows
Capital inflows: $588K | Capital outflows: $2.36M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BSC
BOLTON SECURITIES CORPORATION
Bolton,
Massachusetts
|
+$347K |
| 2 |
Calamos Advisors
Naperville,
Illinois
|
+$153K |
| 3 |
UBS Group
Zurich,
Switzerland
|
+$62.1K |
| 4 |
Ankerstar Wealth
Leander,
Texas
|
+$13.7K |
| 5 |
Burkett Financial Services
Rock Hill,
South Carolina
|
+$12.2K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
-$1.16M |
| 2 |
Old Mission Capital
Chicago,
Illinois
|
-$726K |
| 3 |
Jane Street
New York
|
-$246K |
| 4 |
ATX Financial Planning
Austin,
Texas
|
-$214K |
| 5 |
Harbour Investments
Madison,
Wisconsin
|
-$15.3K |
CBOO Hedge Fund Activity: Q1 2026 in Review
8 of the 8,232 institutional investors tracked by Wall St. Rank reported a position in Calamos Bitcoin Structured Alt Protection ETF - October (CBOO) for Q1 2026, worth a combined $2.49M — down 42% from $4.27M a quarter earlier.
Sellers outnumbered buyers: 3 funds closed out of CBOO and 1 opened new positions — a net loss of 2 holders — while 2 trimmed existing stakes and 4 added.
The largest buyer was BOLTON SECURITIES CORPORATION, adding an estimated $347K. The largest seller was Susquehanna International Group, exiting entirely with an estimated $1.16M sold.
- 8 institutional investors held Calamos Bitcoin Structured Alt Protection ETF - October (CBOO) as of Q1 2026, down from 10 in Q4 2025.
- Funds reported $2.49M of Calamos Bitcoin Structured Alt Protection ETF - October stock for Q1 2026, down 42% quarter-over-quarter.
- 1 fund opened new Calamos Bitcoin Structured Alt Protection ETF - October positions in Q1 2026 and 3 closed out, a net change of -2 holders.
- The largest Calamos Bitcoin Structured Alt Protection ETF - October buyer in Q1 2026 was BOLTON SECURITIES CORPORATION, an estimated $347K added.
- The largest Calamos Bitcoin Structured Alt Protection ETF - October seller in Q1 2026 was Susquehanna International Group, an estimated $1.16M sold.
Based on aggregated 13F filings for Q1 2026.