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Calamos Russell 2000 Structured Alt Protection ETF - October

21 hedge funds and large institutions have $13.8M invested in Calamos Russell 2000 Structured Alt Protection ETF - October in 2025 Q4 according to their latest regulatory filings, with 7 funds opening new positions, 5 increasing their positions, 3 reducing their positions, and 6 closing their positions.

New
Increased
Maintained
Reduced
Closed

70% more capital inflows, than outflows

Capital inflows: $3.89M | Capital outflows: $2.29M

67% more repeat investments, than reductions

Existing positions increased: 5 | Existing positions reduced: 3

17% more first-time investments, than exits

New positions opened: 7 | Existing positions closed: 6

5% more funds holding

Funds holding: 20 → 21 (+1)

1.5% more ownership

Funds ownership: 41.23% → 42.73% (+1.5%)

Holders
21
Holders Change
+1
Holders Change %
+5%
% of All Funds
0.25%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
7
Increased
5
Reduced
3
Closed
6
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

CPRO Hedge Fund Activity: Q4 2025 in Review

21 of the 8,294 institutional investors tracked by Wall St. Rank reported a position in Calamos Russell 2000 Structured Alt Protection ETF - October (CPRO) for Q4 2025, worth a combined $13.8M — up 14% from $12.1M a quarter earlier.

Buyers outnumbered sellers: 7 funds opened new CPRO positions and 6 closed out — a net gain of 1 holder — while 5 added to existing stakes and 3 trimmed.

The largest buyer was Harbour Investments, adding an estimated $1.63M. The largest seller was Old Mission Capital, exiting entirely with an estimated $785K sold.

  • 21 institutional investors held Calamos Russell 2000 Structured Alt Protection ETF - October (CPRO) as of Q4 2025, up from 20 in Q3 2025.
  • Funds reported $13.8M of Calamos Russell 2000 Structured Alt Protection ETF - October stock for Q4 2025, up 14% quarter-over-quarter.
  • 7 funds opened new Calamos Russell 2000 Structured Alt Protection ETF - October positions in Q4 2025 and 6 closed out, a net change of +1 holder.
  • The largest Calamos Russell 2000 Structured Alt Protection ETF - October buyer in Q4 2025 was Harbour Investments, an estimated $1.63M added.
  • The largest Calamos Russell 2000 Structured Alt Protection ETF - October seller in Q4 2025 was Old Mission Capital, an estimated $785K sold.

Based on aggregated 13F filings for Q4 2025.