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

Harbour Investments’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	$320K	Sell	11,509 -2,856	-20%	-$78.8K	﹤0.01%	1342
2026 Q1	$388K	Sell	14,365 -6,763	-32%	-$184K	0.01%	1174
2025 Q4	$572K	Buy	21,128 +19,551	+1,240%	+$526K	0.01%	799
2025 Q3	$42.3K	Sell	1,577 -980	-38%	-$26K	﹤0.01%	1984
2025 Q2	$67K	Sell	2,557 -1,958	-43%	-$50.2K	﹤0.01%	1679
2025 Q1	$114K	Buy	4,515 +980	+28%	+$25.1K	﹤0.01%	1367
2024 Q4	$90.1K	Buy	+3,535	New	+$89.8K	﹤0.01%	1415

Other funds holding CPSO

Calamos Advisors Naperville, Illinois $30.1B AUM 30.03% 1-Year Est. Return

Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

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

OMC

Old Mission Capital Chicago, Illinois $6.31B AUM 20.77% 1-Year Est. Return

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

Harbour Investments's CPSO Position: Q2 2026 in Review

Harbour Investments reduced its Calamos S&P 500 Structured Alt Protection ETF - October (CPSO) stake by 20% in Q2 2026, selling an estimated $78.8K and leaving 11,509 shares worth $320K. The position accounts for ﹤0.01% of the portfolio, ranked #1342.

Harbour Investments first reported a position in CPSO in Q4 2024 and has held it in 7 quarters since. The position peaked at $572K in Q4 2025. 20 funds tracked by Wall St. Rank hold CPSO as of Q2 2026.

Harbour Investments held 11,509 shares of Calamos S&P 500 Structured Alt Protection ETF - October worth $320K as of Q2 2026.
Harbour Investments sold 2,856 Calamos S&P 500 Structured Alt Protection ETF - October shares in Q2 2026, an estimated $78.8K.
Calamos S&P 500 Structured Alt Protection ETF - October made up ﹤0.01% of Harbour Investments's portfolio in Q2 2026, its #1342 holding.
Harbour Investments 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.
Harbour Investments's Calamos S&P 500 Structured Alt Protection ETF - October position peaked at $572K in Q4 2025.
20 funds tracked by Wall St. Rank held Calamos S&P 500 Structured Alt Protection ETF - October as of Q2 2026.

Based on Harbour Investments's 13F filing for Q2 2026, filed 12 Aug 2026.