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CPST
Calamos S&P 500 Structured Alt Protection ETF - September
stock NYSE ETF

At Close

Sep 23, 2026 3:51:39 PM EDT

28.12USD+0.018%(0.00)4,329

28.05Bid 28.14Ask 0.09Spread

Pre-market

0.00USD-100.000%(-28.12)0

After-hours

Sep 22, 2026 4:10:30 PM EDT

28.14USD-0.154%(-0.04)0

OverviewHistoricalDark Pool PrintsShortsMore

CPST Volume Sep 24, 2026

[NF]

Exchange	Day%	Volume	30D%
NYSE Arca	34.69	1,501	13.21
Off Exchange¹	27.25	1,179	59.58
Nasdaq BX	7.65	331	3.90
NYSE American	5.27	228	0.44
NYSE National	4.62	200	1.45
CHX	4.62	200	0.20
Cboe BZX	4.62	200	0.73
Nasdaq GSM	3.10	134	5.91
NYSE	2.31	100	0.34
MEMX	2.31	100	3.18
IEX	2.31	100	2.40
Nasdaq PHLX	1.25	54	0.66
Cboe EDGX	0.00	0	2.86
Cboe BYX	0.00	0	2.83
Cboe EDGA	0.00	0	1.07
MIAX Pearl	0.00	0	0.94
Texas Stock Exchange LLC	0.00	0	0.28

chartexchange.com

¹ A) Dark Pool or Off Exchange? B) Venues explained. C) All trades that update volume from the CTA.

CPST Nutrition Facts

0.42 servings per container

Serving size

10.18K

Calories

4.33K

% Day

% Avg

NYSE Arca 2K

34.69%

13.21%

Off Exchange¹ 1K

27.25%

59.58%

Nasdaq BX 331

7.65%

3.90%

NYSE American 228

5.27%

0.44%

NYSE National 200

4.62%

1.45%

CHX 200

4.62%

0.20%

Cboe BZX 200

4.62%

0.73%

Nasdaq GSM 134

3.10%

5.91%

NYSE 100

2.31%

0.34%

MEMX 100

2.31%

3.18%

IEX 100

2.31%

2.40%

Nasdaq PHLX 54

1.25%

0.66%

Cboe EDGX 0

0.00%

2.86%

Cboe BYX 0

0.00%

2.83%

Cboe EDGA 0

0.00%

1.07%

MIAX Pearl 0

0.00%

0.94%

Texas Stock Exchange LLC 0

0.00%

0.28%

¹ A) Dark Pool or Off Exchange? B) Venues explained. C) All trades that update volume from the CTA.

chartexchange.com

CPST Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 1,179, which is 27.25% of today's total volume.
Today's Lit volume is 3,148, which is 72.75%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 59.58%.
The average Lit volume has been 40.42%.

CPST Volume by Exchange

NYSE Arca

Off Exchange

Nasdaq BX

NYSE American

NYSE National

CHX

Cboe BZX

Nasdaq GSM

NYSE

MEMX

IEX