Dark

FIX
Comfort Systems USA, Inc.
stock NYSE

At Close

Dec 15, 2025 3:59:57 PM EST

968.33USD+0.039%(+0.38)395,380

0.00Bid 0.00Ask 0.00Spread

Pre-market

Dec 12, 2025 9:19:06 AM EST

1023.87USD+5.777%(+55.92)0

After-hours

Dec 15, 2025 4:00:30 PM EST

968.48USD+0.015%(+0.15)370

OverviewOptionsHistoricalDark Pool LevelsShortsMore

FIX Volume Dec 15, 2025

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	34.71	138,933	37.51
NYSE	23.44	93,821	29.92
Nasdaq GSM	13.96	55,897	11.09
IEX	8.92	35,694	5.76
Cboe BZX	8.19	32,780	4.29
NYSE Arca	3.59	14,369	4.48
Cboe EDGX	3.41	13,636	2.92
MEMX	1.20	4,786	1.11
Cboe BYX	0.72	2,895	0.71
Cboe EDGA	0.41	1,627	0.39
Nasdaq PHLX	0.38	1,517	0.23
CHX	0.27	1,071	0.44
Nasdaq BX	0.27	1,063	0.47
NYSE American	0.21	837	0.15
NYSE National	0.19	774	0.31
MIAX Pearl	0.14	578	0.21
LTSE	0.00	0	0.01

chartexchange.com

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

FIX Nutrition Facts

0.79 servings per container

Serving size

505.83K

Calories

400.28K

% Day

% Avg

Off Exchange¹ 139K

34.71%

37.51%

NYSE 94K

23.44%

29.92%

Nasdaq GSM 56K

13.96%

11.09%

IEX 36K

8.92%

5.76%

Cboe BZX 33K

8.19%

4.29%

NYSE Arca 14K

3.59%

4.48%

Cboe EDGX 14K

3.41%

2.92%

MEMX 5K

1.20%

1.11%

Cboe BYX 3K

0.72%

0.71%

Cboe EDGA 2K

0.41%

0.39%

Nasdaq PHLX 2K

0.38%

0.23%

CHX 1K

0.27%

0.44%

Nasdaq BX 1K

0.27%

0.47%

NYSE American 837

0.21%

0.15%

NYSE National 774

0.19%

0.31%

MIAX Pearl 578

0.14%

0.21%

LTSE 0

0.00%

0.01%

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 138,933, which is 34.71% of today's total volume.
Today's Lit volume is 261,345, which is 65.29%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 37.51%.
The average Lit volume has been 62.49%.

FIX Volume by Exchange

Off Exchange

NYSE

Nasdaq GSM

IEX

Cboe BZX

NYSE Arca

Cboe EDGX

MEMX

Cboe BYX

Cboe EDGA

Nasdaq PHLX