COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

RHUMBLINE ADVISERS's Holding History (CIK: 0001115418)

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

Q4 2025

Shares 768,835 Value ($000) $51,696 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 789,863 Value ($000) $66,641 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 782,168 Value ($000) $62,886 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 768,366 Value ($000) $60,878 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 713,619 Value ($000) $51,088 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 721,151 Value ($000) $54,404 Avg Close $75.84 Range $70.86 - $81.63

Q2 2024

Shares 741,562 Value ($000) $54,979 Avg Close $84.75 Range $71.90 - $96.98

Q1 2024

Shares 784,939 Value ($000) $75,825 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 773,373 Value ($000) $67,585 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 782,629 Value ($000) $60,176 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 786,255 Value ($000) $69,977 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 747,130 Value ($000) $51 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 732,966 Value ($000) $57 Avg Close $78.14 Range $68.86 - $85.37

Q3 2022

Shares 675,524 Value ($000) $47,050 Avg Close $69.42 Range $57.54 - $79.26

Q2 2022

Shares 388,205 Value ($000) $23,451 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 354,746 Value ($000) $23,630 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 367,150 Value ($000) $29,016 Avg Close $83.91 Range $75.09 - $101.05

Q3 2021

Shares 357,909 Value ($000) $30,802 Avg Close $86.44 Range $80.00 - $90.85

Q2 2021

Shares 366,440 Value ($000) $30,349 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 40,074 Value ($000) $32,936 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 43,780 Value ($000) $40,465 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 45,678 Value ($000) $38,758 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 47,425 Value ($000) $33,704 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 42,171 Value ($000) $24,763 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 45,002 Value ($000) $26,925 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 43,753 Value ($000) $25,954 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 44,147 Value ($000) $24,460 Avg Close $51.11 Range $46.90 - $56.27

Q1 2019

Shares 38,126 Value ($000) $17,783 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 38,281 Value ($000) $12,914 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 39,212 Value ($000) $16,502 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 40,249 Value ($000) $16,608 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 36,570 Value ($000) $13,263 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 37,167 Value ($000) $11,037 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 35,046 Value ($000) $9,401 Avg Close $27.75 Range $25.54 - $28.80

Q2 2017

Shares 36,536 Value ($000) $9,631 Avg Close $24.32 Range $20.14 - $26.88

Q1 2017

Shares 37,452 Value ($000) $7,761 Avg Close $20.32 Range $18.49 - $21.24

Q4 2016

Shares 35,863 Value ($000) $6,760 Avg Close $19.64 Range $17.92 - $22.44

Q3 2016

Shares 33,465 Value ($000) $7,246 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 32,212 Value ($000) $7,043 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 29,853 Value ($000) $5,617 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 30,095 Value ($000) $6,220 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 29,220 Value ($000) $5,057 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 28,042 Value ($000) $5,644 Avg Close $20.39 Range $19.23 - $21.67

Q1 2015

Shares 25,014 Value ($000) $4,949 Avg Close $18.88 Range $16.88 - $20.19

Q4 2014

Shares 24,417 Value ($000) $4,484 Avg Close $16.16 Range $13.44 - $18.96

Q3 2014

Shares 24,186 Value ($000) $3,762 Avg Close $14.90 Range $13.85 - $16.58

Q2 2014

Shares 22,425 Value ($000) $3,547 Avg Close $16.20 Range $14.70 - $19.34

Q1 2014

Shares 31,825 Value ($000) $5,943 Avg Close $18.86 Range $16.38 - $21.82

Q4 2013

Shares 33,427 Value ($000) $6,170 Avg Close $17.69 Range $16.07 - $18.84

Q3 2013

Shares 33,284 Value ($000) $5,588 Avg Close $15.34 Range $12.98 - $17.22

Q2 2013

Shares 33,425 Value ($000) $4,314 Avg Close $11.32 Range $10.46 - $13.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	768,835	$51,696	$70.84	$62.00 - $85.24
Q3 2025	789,863	$66,641	$88.37	$79.94 - $97.43
Q2 2025	782,168	$62,886	$77.90	$71.21 - $83.68
Q1 2025	768,366	$60,878	$76.08	$68.41 - $83.03
Q4 2024	713,619	$51,088	$75.52	$68.26 - $82.49
Q3 2024	721,151	$54,404	$75.84	$70.86 - $81.63
Q2 2024	741,562	$54,979	$84.75	$71.90 - $96.98
Q1 2024	784,939	$75,825	$86.08	$79.82 - $100.38
Q4 2023	773,373	$67,585	$80.94	$67.35 - $89.11
Q3 2023	782,629	$60,176	$82.85	$75.78 - $92.30
Q2 2023	786,255	$69,977	$77.21	$67.22 - $92.36
Q1 2023	747,130	$51	$73.79	$65.12 - $81.15
Q4 2022	732,966	$57	$78.14	$68.86 - $85.37
Q3 2022	675,524	$47,050	$69.42	$57.54 - $79.26
Q2 2022	388,205	$23,451	$60.57	$53.51 - $68.39
Q1 2022	354,746	$23,630	$66.39	$49.00 - $79.73
Q4 2021	367,150	$29,016	$83.91	$75.09 - $101.05
Q3 2021	357,909	$30,802	$86.44	$80.00 - $90.85
Q2 2021	366,440	$30,349	$86.45	$80.52 - $94.35
Q1 2021	40,074	$32,936	$86.33	$74.31 - $95.28
Q4 2020	43,780	$40,465	$87.68	$78.10 - $95.12
Q3 2020	45,678	$38,758	$79.70	$66.20 - $93.90
Q2 2020	47,425	$33,704	$64.65	$52.02 - $74.71
Q1 2020	42,171	$24,763	$65.18	$50.02 - $74.67
Q4 2019	45,002	$26,925	$58.38	$51.00 - $62.35
Q3 2019	43,753	$25,954	$59.86	$55.57 - $63.94
Q2 2019	44,147	$24,460	$51.11	$46.90 - $56.27
Q1 2019	38,126	$17,783	$41.31	$32.51 - $48.49
Q4 2018	38,281	$12,914	$36.53	$31.59 - $42.50
Q3 2018	39,212	$16,502	$42.74	$39.71 - $44.84
Q2 2018	40,249	$16,608	$38.48	$34.22 - $42.25
Q1 2018	36,570	$13,263	$34.47	$29.54 - $37.86
Q4 2017	37,167	$11,037	$29.30	$26.56 - $31.47
Q3 2017	35,046	$9,401	$27.75	$25.54 - $28.80
Q2 2017	36,536	$9,631	$24.32	$20.14 - $26.88
Q1 2017	37,452	$7,761	$20.32	$18.49 - $21.24
Q4 2016	35,863	$6,760	$19.64	$17.92 - $22.44
Q3 2016	33,465	$7,246	$21.29	$20.25 - $22.48
Q2 2016	32,212	$7,043	$19.77	$17.45 - $21.88
Q1 2016	29,853	$5,617	$17.71	$14.65 - $20.50
Q4 2015	30,095	$6,220	$19.90	$16.80 - $21.35
Q3 2015	29,220	$5,057	$19.15	$16.35 - $22.35
Q2 2015	28,042	$5,644	$20.39	$19.23 - $21.67
Q1 2015	25,014	$4,949	$18.88	$16.88 - $20.19
Q4 2014	24,417	$4,484	$16.16	$13.44 - $18.96
Q3 2014	24,186	$3,762	$14.90	$13.85 - $16.58
Q2 2014	22,425	$3,547	$16.20	$14.70 - $19.34
Q1 2014	31,825	$5,943	$18.86	$16.38 - $21.82
Q4 2013	33,427	$6,170	$17.69	$16.07 - $18.84
Q3 2013	33,284	$5,588	$15.34	$12.98 - $17.22
Q2 2013	33,425	$4,314	$11.32	$10.46 - $13.07