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

Calamos Advisors’s Portfolio CPST Stock Details CPST Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q3	$12.9M	Buy	458,096 +112,968	+33%	+$3.16M	0.04%	386
2026 Q2	$9.6M	Sell	345,128 -87,916	-20%	-$2.42M	0.03%	419
2026 Q1	$11.7M	Buy	433,044 +146,291	+51%	+$3.97M	0.04%	371
2025 Q4	$7.75M	Buy	286,753 +30,428	+12%	+$818K	0.03%	462
2025 Q3	$6.85M	Sell	256,325 -2,101	-0.8%	-$55.6K	0.03%	495
2025 Q2	$6.75M	Buy	258,426 +54,201	+27%	+$1.38M	0.03%	497
2025 Q1	$5.14M	Sell	204,225 -55,260	-21%	-$1.4M	0.02%	513
2024 Q4	$6.57M	Buy	259,485 +82,917	+47%	+$2.09M	0.03%	482
2024 Q3	$4.43M	Buy	+176,568	New	+$4.4M	0.02%	542

Other funds holding CPST

Calamos Wealth Management Naperville, Illinois $3.51B AUM 25.96% 1-Year Est. Return

Commonwealth Equity Services Waltham, Massachusetts $77B AUM 19.24% 1-Year Est. Return

Verdence Capital Advisors Hunt Valley, Maryland $2.35B AUM 27.25% 1-Year Est. Return

Grantvest Financial Group Matawan, New Jersey $174M AUM 10.42% 1-Year Est. Return

Sterling Financial Planning Sparta, New Jersey $365M AUM 13.15% 1-Year Est. Return

Next Level Private Harrison, New York $520M AUM 19.06% 1-Year Est. Return

Burkett Financial Services Rock Hill, South Carolina $331M AUM 14.93% 1-Year Est. Return

New England Capital Financial Advisors Meriden, Connecticut $430M AUM 7.57% 1-Year Est. Return

Calamos Advisors's CPST Position: Q3 2026 in Review

Calamos Advisors increased its Calamos S&P 500 Structured Alt Protection ETF - September (CPST) stake by 33% in Q3 2026, buying an estimated $3.16M and bringing the position to 458,096 shares worth $12.9M. The position accounts for 0.04% of the portfolio, ranked #386.

Calamos Advisors first reported a position in CPST in Q3 2024 and has held it in 9 quarters since. 9 funds tracked by Wall St. Rank hold CPST as of Q3 2026.

Calamos Advisors held 458,096 shares of Calamos S&P 500 Structured Alt Protection ETF - September worth $12.9M as of Q3 2026.
Calamos Advisors bought 112,968 Calamos S&P 500 Structured Alt Protection ETF - September shares in Q3 2026, an estimated $3.16M.
Calamos S&P 500 Structured Alt Protection ETF - September made up 0.04% of Calamos Advisors's portfolio in Q3 2026, its #386 holding.
Calamos Advisors first reported a position in Calamos S&P 500 Structured Alt Protection ETF - September in Q3 2024 and has held it in 9 quarters since.
9 funds tracked by Wall St. Rank held Calamos S&P 500 Structured Alt Protection ETF - September as of Q3 2026.

Based on Calamos Advisors's 13F filing for Q3 2026, filed 2 Nov 2026.