COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

Note: Option positions (PUT/CALL) are excluded.

Q3 2025

Shares 453,897 Value ($000) $38,295 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 558,946 Value ($000) $44,939 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 492,279 Value ($000) $39,003 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 24,577 Value ($000) $1,759 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 11,278 Value ($000) $851 Avg Close $75.84 Range $70.86 - $81.63

Q1 2023

Shares 95,968 Value ($000) $7 Avg Close $73.79 Range $65.12 - $81.15

Q2 2022

Shares 335,032 Value ($000) $20,239 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 275,081 Value ($000) $18,323 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 35,817 Value ($000) $2,831 Avg Close $83.91 Range $75.09 - $101.05

Q2 2021

Shares 274,940 Value ($000) $22,771 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 42,967 Value ($000) $35,314 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 14,704 Value ($000) $13,591 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 9,104 Value ($000) $7,725 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 18,949 Value ($000) $13,466 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 45,759 Value ($000) $26,870 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 900 Value ($000) $538 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 9,700 Value ($000) $5,754 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 1,300 Value ($000) $720 Avg Close $51.11 Range $46.90 - $56.27

Q4 2018

Shares 53,846 Value ($000) $18,164 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 138,884 Value ($000) $58,448 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 181,915 Value ($000) $75,064 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 150,514 Value ($000) $54,588 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 60,764 Value ($000) $18,044 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 32,600 Value ($000) $8,745 Avg Close $27.75 Range $25.54 - $28.80

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	453,897	$38,295	$88.37	$79.94 - $97.43
Q2 2025	558,946	$44,939	$77.90	$71.21 - $83.68
Q1 2025	492,279	$39,003	$76.08	$68.41 - $83.03
Q4 2024	24,577	$1,759	$75.52	$68.26 - $82.49
Q3 2024	11,278	$851	$75.84	$70.86 - $81.63
Q1 2023	95,968	$7	$73.79	$65.12 - $81.15
Q2 2022	335,032	$20,239	$60.57	$53.51 - $68.39
Q1 2022	275,081	$18,323	$66.39	$49.00 - $79.73
Q4 2021	35,817	$2,831	$83.91	$75.09 - $101.05
Q2 2021	274,940	$22,771	$86.45	$80.52 - $94.35
Q1 2021	42,967	$35,314	$86.33	$74.31 - $95.28
Q4 2020	14,704	$13,591	$87.68	$78.10 - $95.12
Q3 2020	9,104	$7,725	$79.70	$66.20 - $93.90
Q2 2020	18,949	$13,466	$64.65	$52.02 - $74.71
Q1 2020	45,759	$26,870	$65.18	$50.02 - $74.67
Q4 2019	900	$538	$58.38	$51.00 - $62.35
Q3 2019	9,700	$5,754	$59.86	$55.57 - $63.94
Q2 2019	1,300	$720	$51.11	$46.90 - $56.27
Q4 2018	53,846	$18,164	$36.53	$31.59 - $42.50
Q3 2018	138,884	$58,448	$42.74	$39.71 - $44.84
Q2 2018	181,915	$75,064	$38.48	$34.22 - $42.25
Q1 2018	150,514	$54,588	$34.47	$29.54 - $37.86
Q4 2017	60,764	$18,044	$29.30	$26.56 - $31.47
Q3 2017	32,600	$8,745	$27.75	$25.54 - $28.80