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CSGP
CoStar Group Inc
stock NASDAQ

Market Open

Sep 30, 2026 1:16:02 PM EDT

27.10USD+0.557%(+0.15)1,873,317

27.09Bid 27.10Ask 0.01Spread

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

OverviewOptionsHistoricalDark Pool LevelsShortsMore

CSGP Volume Sep 30, 2026 12:55:03 PM EDT

[NF]

Exchange	Day%	Volume	30D%
Off Exchange¹	54.99	958,382	38.37
Nasdaq GSM	17.43	303,798	42.11
IEX	8.81	153,465	5.07
NYSE Arca	6.52	113,550	5.12
Cboe BZX	3.78	65,884	3.40
Cboe EDGX	2.47	43,104	1.61
NYSE	2.16	37,582	1.51
MEMX	1.61	28,077	0.76
Texas Stock Exchange LLC	0.37	6,518	0.20
Cboe EDGA	0.37	6,380	0.45
Cboe BYX	0.36	6,311	0.52
MIAX Pearl	0.36	6,216	0.20
NYSE National	0.26	4,519	0.30
Nasdaq PHLX	0.19	3,393	0.09
Nasdaq BX	0.13	2,296	0.10
CHX	0.12	2,053	0.09
NYSE American	0.08	1,335	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

0.26 servings per container

Serving size

6.78M

Calories

1.74M

% Day

% Avg

Off Exchange¹ 958K

54.99%

38.37%

Nasdaq GSM 304K

17.43%

42.11%

IEX 153K

8.81%

5.07%

NYSE Arca 114K

6.52%

5.12%

Cboe BZX 66K

3.78%

3.40%

Cboe EDGX 43K

2.47%

1.61%

NYSE 38K

2.16%

1.51%

MEMX 28K

1.61%

0.76%

Texas Stock Exchange LLC 7K

0.37%

0.20%

Cboe EDGA 6K

0.37%

0.45%

Cboe BYX 6K

0.36%

0.52%

MIAX Pearl 6K

0.36%

0.20%

NYSE National 5K

0.26%

0.30%

Nasdaq PHLX 3K

0.19%

0.09%

Nasdaq BX 2K

0.13%

0.10%

CHX 2K

0.12%

0.09%

NYSE American 1K

0.08%

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 958,382, which is 54.99% of today's total volume.
Today's Lit volume is 784,481, which is 45.01%.
Over the past 30 days, the average Off Exchange & Dark Pool volume has been 38.37%.
The average Lit volume has been 61.63%.

CSGP Volume by Exchange

Off Exchange

Nasdaq GSM

IEX

NYSE Arca

Cboe BZX

Cboe EDGX

NYSE

MEMX

Texas Stock Exchange LLC

Cboe EDGA

Cboe BYX