Dark

FIX
Comfort Systems USA, Inc.
stock NYSE

At Close

Aug 21, 2026 3:59:55 PM EDT

1655.21USD-1.060%(-17.73)370,016

0.00Bid 0.00Ask 0.00Spread

Pre-market

Aug 21, 2026 9:20:30 AM EDT

1697.10USD+1.444%(+24.16)127

After-hours

Aug 21, 2026 4:35:30 PM EDT

1660.00USD+0.289%(+4.79)15

OverviewOptionsHistoricalExchange VolumeShortsMore

FIX Volume Aug 21, 2026

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Exchange	Day%	Volume	30D%
Off Exchange¹	57.11	164,405	47.31
NYSE	16.32	46,995	23.63
Nasdaq GSM	7.20	20,725	9.16
IEX	6.13	17,656	5.68
NYSE Arca	3.60	10,369	3.93
Cboe BZX	3.29	9,484	4.70
Cboe EDGX	2.87	8,273	2.09
Cboe BYX	1.00	2,877	0.67
MEMX	0.72	2,077	1.15
Nasdaq BX	0.62	1,780	0.40
NYSE National	0.49	1,412	0.33
Cboe EDGA	0.25	731	0.37
MIAX Pearl	0.15	425	0.23
Nasdaq PHLX	0.07	202	0.15
CHX	0.07	195	0.08
NYSE American	0.07	191	0.11
24X National	0.03	92	0.01
Texas Stock Exchange LLC	0.00	1	0.00
LTSE	0.00	0	0.00

chartexchange.com

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

FIX Nutrition Facts

0.60 servings per container

Serving size

477.50K

Calories

287.89K

% Day

% Avg

Off Exchange¹ 164K

57.11%

47.31%

NYSE 47K

16.32%

23.63%

Nasdaq GSM 21K

7.20%

9.16%

IEX 18K

6.13%

5.68%

NYSE Arca 10K

3.60%

3.93%

Cboe BZX 9K

3.29%

4.70%

Cboe EDGX 8K

2.87%

2.09%

Cboe BYX 3K

1.00%

0.67%

MEMX 2K

0.72%

1.15%

Nasdaq BX 2K

0.62%

0.40%

NYSE National 1K

0.49%

0.33%

Cboe EDGA 731

0.25%

0.37%

MIAX Pearl 425

0.15%

0.23%

Nasdaq PHLX 202

0.07%

0.15%

CHX 195

0.07%

0.08%

NYSE American 191

0.07%

0.11%

24X National 92

0.03%

0.01%

Texas Stock Exchange LLC 1

0.00%

LTSE 0

0.00%

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

chartexchange.com

FIX Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 164,405, which is 57.11% of today's total volume.
Today's Lit volume is 123,485, which is 42.89%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 47.31%.
The average Lit volume has been 52.69%.

FIX Volume by Exchange

Off Exchange

NYSE

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

Cboe EDGX

Cboe BYX

MEMX

Nasdaq BX

NYSE National