Dark

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

At Close

Sep 22, 2026 9:43:44 AM EDT

28.18USD0.000%(+28.18)4,792

28.05Bid 28.19Ask 0.14Spread

Pre-market

0.00USD-100.000%(0.00)0

After-hours

Sep 22, 2026 4:10:30 PM EDT

28.14USD-0.154%(-0.04)1

OverviewHistoricalExchange VolumeShortsMore

CPST Volume Sep 22, 2026

[ < ]

Exchange	Day%	Volume	30D%
Off Exchange¹	70.73	3,388	58.39
Nasdaq GSM	12.53	600	6.19
IEX	10.44	500	2.34
NYSE Arca	6.28	301	14.97
Nasdaq BX	0.02	1	3.95
Nasdaq PHLX	0.00	0	0.53
CHX	0.00	0	0.18
NYSE American	0.00	0	0.37
Cboe BZX	0.00	0	0.37
NYSE	0.00	0	0.41
NYSE National	0.00	0	1.33
MIAX Pearl	0.00	0	0.92
Cboe EDGA	0.00	0	1.09
Cboe BYX	0.00	0	2.70
Cboe EDGX	0.00	0	2.75
MEMX	0.00	0	3.35
Texas Stock Exchange LLC	0.00	0	0.16

chartexchange.com

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

CPST Nutrition Facts

0.53 servings per container

Serving size

9.09K

Calories

4.79K

% Day

% Avg

Off Exchange¹ 3K

70.73%

58.39%

Nasdaq GSM 600

12.53%

6.19%

IEX 500

10.44%

2.34%

NYSE Arca 301

6.28%

14.97%

Nasdaq BX 1

0.02%

3.95%

Nasdaq PHLX 0

0.00%

0.53%

CHX 0

0.00%

0.18%

NYSE American 0

0.00%

0.37%

Cboe BZX 0

0.00%

0.37%

NYSE 0

0.00%

0.41%

NYSE National 0

0.00%

1.33%

MIAX Pearl 0

0.00%

0.92%

Cboe EDGA 0

0.00%

1.09%

Cboe BYX 0

0.00%

2.70%

Cboe EDGX 0

0.00%

2.75%

MEMX 0

0.00%

3.35%

Texas Stock Exchange LLC 0

0.00%

0.16%

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 3,388, which is 70.73% of today's total volume.
Today's Lit volume is 1,402, which is 29.27%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 58.39%.
The average Lit volume has been 41.61%.

CPST Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Nasdaq BX

NYSE National

Texas Stock Exchange LLC

Cboe BZX

Cboe BYX

NYSE American

NYSE