Calamos Bitcoin Structured Alt Protection ETF - October
CBOO
9 hedge funds and large institutions have $3.98M invested in Calamos Bitcoin Structured Alt Protection ETF - October in 2025 Q4 according to their latest regulatory filings, with 9 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.
54.25% more ownership
Funds ownership: 0% → 54.25% (+54%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$1.17M |
| 2 |
Jane Street
New York
|
+$763K |
| 3 |
OMC
Old Mission Capital
Chicago,
Illinois
|
+$733K |
| 4 |
Calamos Advisors
Naperville,
Illinois
|
+$463K |
| 5 |
RWA
Rooted Wealth Advisors
Bourbonnais,
Illinois
|
+$331K |
Top Sellers
CBOO Hedge Fund Activity: Q4 2025 in Review
9 of the 8,282 institutional investors tracked by Wall St. Rank reported a position in Calamos Bitcoin Structured Alt Protection ETF - October (CBOO) for Q4 2025, worth a combined $3.98M.
Buyers outnumbered sellers: 9 funds opened new CBOO positions and 0 closed out — a net gain of 9 holders — while 0 added to existing stakes and 0 trimmed.
The largest buyer was Susquehanna International Group, opening a new position worth an estimated $1.17M.
- 9 institutional investors held Calamos Bitcoin Structured Alt Protection ETF - October (CBOO) as of Q4 2025, up from 0 in Q3 2025.
- Funds reported $3.98M of Calamos Bitcoin Structured Alt Protection ETF - October stock for Q4 2025.
- 9 funds opened new Calamos Bitcoin Structured Alt Protection ETF - October positions in Q4 2025 and 0 closed out, a net change of +9 holders.
- The largest Calamos Bitcoin Structured Alt Protection ETF - October buyer in Q4 2025 was Susquehanna International Group, an estimated $1.17M added.
Based on aggregated 13F filings for Q4 2025.