Dark

CSGP
CoStar Group Inc
stock NASDAQ

Market Open

Sep 30, 2026 9:52:43 AM EDT

27.33USD+1.391%(+0.38)267,621

27.31Bid 27.34Ask 0.03Spread

Pre-market

Sep 30, 2026 9:21:30 AM EDT

27.14USD+0.705%(+0.19)1,000

After-hours

Sep 29, 2026 4:08:30 PM EDT

26.95USD0.000%(0.00)0

OverviewOptionsHistoricalExchange VolumeShortsMore

CSGP Volume Sep 30, 2026 9:35:03 AM EDT

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	66.21	92,198	38.24
Nasdaq GSM	14.60	20,333	42.31
IEX	13.57	18,895	5.05
NYSE Arca	1.84	2,559	5.11
Cboe BZX	1.39	1,941	3.39
Cboe EDGX	0.66	914	1.61
NYSE	0.58	807	1.51
Nasdaq PHLX	0.39	550	0.09
MIAX Pearl	0.19	270	0.20
Texas Stock Exchange LLC	0.18	250	0.19
MEMX	0.15	205	0.75
NYSE National	0.11	150	0.30
Nasdaq BX	0.11	150	0.10
Cboe BYX	0.02	23	0.52
Cboe EDGA	0.00	0	0.45
CHX	0.00	0	0.09
NYSE American	0.00	0	0.09
24X National	0.00	0	0.01
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.

CSGP Nutrition Facts

0.02 servings per container

Serving size

6.78M

Calories

139.25K

% Day

% Avg

Off Exchange¹ 92K

66.21%

38.24%

Nasdaq GSM 20K

14.60%

42.31%

IEX 19K

13.57%

5.05%

NYSE Arca 3K

1.84%

5.11%

Cboe BZX 2K

1.39%

3.39%

Cboe EDGX 914

0.66%

1.61%

NYSE 807

0.58%

1.51%

Nasdaq PHLX 550

0.39%

0.09%

MIAX Pearl 270

0.19%

0.20%

Texas Stock Exchange LLC 250

0.18%

0.19%

MEMX 205

0.15%

0.75%

NYSE National 150

0.11%

0.30%

Nasdaq BX 150

0.11%

0.10%

Cboe BYX 23

0.02%

0.52%

Cboe EDGA 0

0.00%

0.45%

CHX 0

0.00%

0.09%

NYSE American 0

0.00%

0.09%

24X National 0

0.00%

0.01%

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

CSGP Off Exchange & Dark Pool Summary

Today's Off Exchange & Dark Pool volume is 92,198, which is 66.21% of today's total volume.
Today's Lit volume is 47,047, which is 33.79%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 38.24%.
The average Lit volume has been 61.76%.

CSGP Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

Cboe EDGX

NYSE

Nasdaq PHLX

MIAX Pearl

Texas Stock Exchange LLC

MEMX