Calamos Advisors
CPSO

Calamos Advisors’s Calamos S&P 500 Structured Alt Protection ETF - October CPSO Stock Holding History

Calamos Advisors’s Portfolio CPSO Stock Details CPSO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$9.59M Sell
344,453
-11,579
-3% -$320K 0.03% 423
2026
Q1 		$9.61M Buy
356,032
+69,386
+24% +$1.88M 0.03% 411
2025
Q4 		$7.76M Buy
286,646
+31,763
+12% +$855K 0.03% 458
2025
Q3 		$6.83M Sell
254,883
-2,089
-0.8% -$55.4K 0.03% 497
2025
Q2 		$6.74M Buy
256,972
+54,024
+27% +$1.39M 0.03% 499
2025
Q1 		$5.15M Sell
202,948
-54,935
-21% -$1.41M 0.02% 510
2024
Q4 		$6.57M Buy
+257,883
New +$6.55M 0.03% 481

Other funds holding CPSO

Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
Commonwealth Equity Services
Commonwealth Equity Services Waltham, Massachusetts $79.5B AUM 27.1% 1-Year Est. Return
BWAM
Blue Water Asset Management Grand Rapids, Michigan $310M AUM
CWM
Calamos Wealth Management Naperville, Illinois $3.31B AUM 32.95% 1-Year Est. Return
RWA
Rooted Wealth Advisors Bourbonnais, Illinois $408M AUM 18.96% 1-Year Est. Return
GFG
Grantvest Financial Group Matawan, New Jersey $173M AUM 15.36% 1-Year Est. Return
HI
Harbour Investments Madison, Wisconsin $7.43B AUM 24.49% 1-Year Est. Return
OMC
Old Mission Capital Chicago, Illinois $6.31B AUM 20.77% 1-Year Est. Return
Cambridge Investment Research Advisors
Cambridge Investment Research Advisors Fairfield, Iowa $44.6B AUM 28.94% 1-Year Est. Return
CAL
Capital Analysts LLC Fort Washington, Pennsylvania $4.34B AUM 17.55% 1-Year Est. Return

Calamos Advisors's CPSO Position: Q2 2026 in Review

Calamos Advisors reduced its Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) stake by 3.3% in Q2 2026, selling an estimated $320K and leaving 344,453 shares worth $9.59M. The position accounts for 0.03% of the portfolio, ranked #423.

Calamos Advisors first reported a position in CPSO in Q4 2024 and has held it in 7 quarters since. The position peaked at $9.61M in Q1 2026. 20 funds tracked by Wall St. Rank hold CPSO as of Q2 2026.

  • Calamos Advisors held 344,453 shares of Calamos S&P 500 Structured Alt Protection ETF - October worth $9.59M as of Q2 2026.
  • Calamos Advisors sold 11,579 Calamos S&P 500 Structured Alt Protection ETF - October shares in Q2 2026, an estimated $320K.
  • Calamos S&P 500 Structured Alt Protection ETF - October made up 0.03% of Calamos Advisors's portfolio in Q2 2026, its #423 holding.
  • Calamos Advisors first reported a position in Calamos S&P 500 Structured Alt Protection ETF - October in Q4 2024 and has held it in 7 quarters since.
  • Calamos Advisors's Calamos S&P 500 Structured Alt Protection ETF - October position peaked at $9.61M in Q1 2026.
  • 20 funds tracked by Wall St. Rank held Calamos S&P 500 Structured Alt Protection ETF - October as of Q2 2026.

Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.