COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q4 2025

Shares 391,305 Value ($000) $26,311 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 635,944 Value ($000) $53,655 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 126,698 Value ($000) $10,187 Avg Close $77.90 Range $71.21 - $83.68

Q4 2024

Shares 277,930 Value ($000) $19,897 Avg Close $75.52 Range $68.26 - $82.49

Q1 2024

Shares 13,612 Value ($000) $1,315 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 158,119 Value ($000) $13,818 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 727,227 Value ($000) $55,916 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 1,117,914 Value ($000) $99,494 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 1,617,180 Value ($000) $111,343 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 1,440,176 Value ($000) $111,297 Avg Close $78.14 Range $68.86 - $85.37

Q3 2022

Shares 1,128,518 Value ($000) $78,601 Avg Close $69.42 Range $57.54 - $79.26

Q2 2022

Shares 932,481 Value ($000) $56,333 Avg Close $60.57 Range $53.51 - $68.39

Q2 2020

Shares 8,311 Value ($000) $5,906 Avg Close $64.65 Range $52.02 - $74.71

Q4 2019

Shares 10,922 Value ($000) $6,535 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 12,301 Value ($000) $7,298 Avg Close $59.86 Range $55.57 - $63.94

Q1 2019

Shares 4,472 Value ($000) $2,086 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 31,115 Value ($000) $10,496 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 22,073 Value ($000) $9,289 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 5,667 Value ($000) $2,338 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 4,828 Value ($000) $1,751 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 5,772 Value ($000) $1,714 Avg Close $29.30 Range $26.56 - $31.47

Q4 2016

Shares 27,250 Value ($000) $5,136 Avg Close $19.64 Range $17.92 - $22.44

Q3 2016

Shares 4,680 Value ($000) $1,013 Avg Close $21.29 Range $20.25 - $22.48

Q2 2014

Shares 2,000 Value ($000) $316 Avg Close $16.20 Range $14.70 - $19.34

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	391,305	$26,311	$70.84	$62.00 - $85.24
Q3 2025	635,944	$53,655	$88.37	$79.94 - $97.43
Q2 2025	126,698	$10,187	$77.90	$71.21 - $83.68
Q4 2024	277,930	$19,897	$75.52	$68.26 - $82.49
Q1 2024	13,612	$1,315	$86.08	$79.82 - $100.38
Q4 2023	158,119	$13,818	$80.94	$67.35 - $89.11
Q3 2023	727,227	$55,916	$82.85	$75.78 - $92.30
Q2 2023	1,117,914	$99,494	$77.21	$67.22 - $92.36
Q1 2023	1,617,180	$111,343	$73.79	$65.12 - $81.15
Q4 2022	1,440,176	$111,297	$78.14	$68.86 - $85.37
Q3 2022	1,128,518	$78,601	$69.42	$57.54 - $79.26
Q2 2022	932,481	$56,333	$60.57	$53.51 - $68.39
Q2 2020	8,311	$5,906	$64.65	$52.02 - $74.71
Q4 2019	10,922	$6,535	$58.38	$51.00 - $62.35
Q3 2019	12,301	$7,298	$59.86	$55.57 - $63.94
Q1 2019	4,472	$2,086	$41.31	$32.51 - $48.49
Q4 2018	31,115	$10,496	$36.53	$31.59 - $42.50
Q3 2018	22,073	$9,289	$42.74	$39.71 - $44.84
Q2 2018	5,667	$2,338	$38.48	$34.22 - $42.25
Q1 2018	4,828	$1,751	$34.47	$29.54 - $37.86
Q4 2017	5,772	$1,714	$29.30	$26.56 - $31.47
Q4 2016	27,250	$5,136	$19.64	$17.92 - $22.44
Q3 2016	4,680	$1,013	$21.29	$20.25 - $22.48
Q2 2014	2,000	$316	$16.20	$14.70 - $19.34