COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM's Holding History (CIK: 0000919079)

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

Q4 2025

Shares 731,971 Value ($000) $49,218 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 730,562 Value ($000) $61,638 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 686,918 Value ($000) $55,228 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 630,649 Value ($000) $49,966 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 639,824 Value ($000) $45,805 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 681,981 Value ($000) $51,449 Avg Close $75.84 Range $70.86 - $81.63

Q2 2024

Shares 688,954 Value ($000) $51,079 Avg Close $84.75 Range $71.90 - $96.98

Q1 2024

Shares 709,750 Value ($000) $68,562 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 728,286 Value ($000) $63,645 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 756,375 Value ($000) $58,158 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 748,919 Value ($000) $66,654 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 775,029 Value ($000) $53,361 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 893,228 Value ($000) $69,029 Avg Close $78.14 Range $68.86 - $85.37

Q3 2022

Shares 898,081 Value ($000) $62,551 Avg Close $69.42 Range $57.54 - $79.26

Q2 2022

Shares 753,577 Value ($000) $45,524 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 776,886 Value ($000) $51,748 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 833,411 Value ($000) $65,864 Avg Close $83.91 Range $75.09 - $101.05

Q3 2021

Shares 795,628 Value ($000) $68,472 Avg Close $86.44 Range $80.00 - $90.85

Q2 2021

Shares 799,280 Value ($000) $66,196 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 81,474 Value ($000) $66,963 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 93,297 Value ($000) $86,233 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 89,519 Value ($000) $75,958 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 86,696 Value ($000) $61,612 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 81,216 Value ($000) $47,691 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 86,064 Value ($000) $51,492 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 83,884 Value ($000) $49,760 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 61,495 Value ($000) $34,072 Avg Close $51.11 Range $46.90 - $56.27

Q1 2019

Shares 58,094 Value ($000) $27,096 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 58,748 Value ($000) $19,818 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 63,057 Value ($000) $26,537 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 63,408 Value ($000) $26,164 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 72,099 Value ($000) $26,149 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 76,515 Value ($000) $22,721 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 72,057 Value ($000) $19,329 Avg Close $27.75 Range $25.54 - $28.80

Q2 2017

Shares 63,200 Value ($000) $16,660 Avg Close $24.32 Range $20.14 - $26.88

Q1 2017

Shares 63,700 Value ($000) $13,200 Avg Close $20.32 Range $18.49 - $21.24

Q4 2016

Shares 64,500 Value ($000) $12,158 Avg Close $19.64 Range $17.92 - $22.44

Q3 2016

Shares 74,200 Value ($000) $16,067 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 76,400 Value ($000) $16,706 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 78,400 Value ($000) $14,753 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 84,900 Value ($000) $17,548 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 88,900 Value ($000) $15,385 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 93,700 Value ($000) $18,858 Avg Close $20.39 Range $19.23 - $21.67

Q1 2015

Shares 87,815 Value ($000) $16,334 Avg Close $18.88 Range $16.88 - $20.19

Q4 2014

Shares 87,815 Value ($000) $16,334 Avg Close $16.16 Range $13.44 - $18.96

Q3 2014

Shares 86,936 Value ($000) $13,522 Avg Close $14.90 Range $13.85 - $16.58

Q2 2014

Shares 84,952 Value ($000) $13,437 Avg Close $16.20 Range $14.70 - $19.34

Q1 2014

Shares 92,887 Value ($000) $15,632 Avg Close $18.86 Range $16.38 - $21.82

Q4 2013

Shares 110,496 Value ($000) $20,373 Avg Close $17.69 Range $16.07 - $18.84

Q3 2013

Shares 99,779 Value ($000) $16,753 Avg Close $15.34 Range $12.98 - $17.22

Q2 2013

Shares 98,821 Value ($000) $12,755 Avg Close $11.32 Range $10.46 - $13.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	731,971	$49,218	$70.84	$62.00 - $85.24
Q3 2025	730,562	$61,638	$88.37	$79.94 - $97.43
Q2 2025	686,918	$55,228	$77.90	$71.21 - $83.68
Q1 2025	630,649	$49,966	$76.08	$68.41 - $83.03
Q4 2024	639,824	$45,805	$75.52	$68.26 - $82.49
Q3 2024	681,981	$51,449	$75.84	$70.86 - $81.63
Q2 2024	688,954	$51,079	$84.75	$71.90 - $96.98
Q1 2024	709,750	$68,562	$86.08	$79.82 - $100.38
Q4 2023	728,286	$63,645	$80.94	$67.35 - $89.11
Q3 2023	756,375	$58,158	$82.85	$75.78 - $92.30
Q2 2023	748,919	$66,654	$77.21	$67.22 - $92.36
Q1 2023	775,029	$53,361	$73.79	$65.12 - $81.15
Q4 2022	893,228	$69,029	$78.14	$68.86 - $85.37
Q3 2022	898,081	$62,551	$69.42	$57.54 - $79.26
Q2 2022	753,577	$45,524	$60.57	$53.51 - $68.39
Q1 2022	776,886	$51,748	$66.39	$49.00 - $79.73
Q4 2021	833,411	$65,864	$83.91	$75.09 - $101.05
Q3 2021	795,628	$68,472	$86.44	$80.00 - $90.85
Q2 2021	799,280	$66,196	$86.45	$80.52 - $94.35
Q1 2021	81,474	$66,963	$86.33	$74.31 - $95.28
Q4 2020	93,297	$86,233	$87.68	$78.10 - $95.12
Q3 2020	89,519	$75,958	$79.70	$66.20 - $93.90
Q2 2020	86,696	$61,612	$64.65	$52.02 - $74.71
Q1 2020	81,216	$47,691	$65.18	$50.02 - $74.67
Q4 2019	86,064	$51,492	$58.38	$51.00 - $62.35
Q3 2019	83,884	$49,760	$59.86	$55.57 - $63.94
Q2 2019	61,495	$34,072	$51.11	$46.90 - $56.27
Q1 2019	58,094	$27,096	$41.31	$32.51 - $48.49
Q4 2018	58,748	$19,818	$36.53	$31.59 - $42.50
Q3 2018	63,057	$26,537	$42.74	$39.71 - $44.84
Q2 2018	63,408	$26,164	$38.48	$34.22 - $42.25
Q1 2018	72,099	$26,149	$34.47	$29.54 - $37.86
Q4 2017	76,515	$22,721	$29.30	$26.56 - $31.47
Q3 2017	72,057	$19,329	$27.75	$25.54 - $28.80
Q2 2017	63,200	$16,660	$24.32	$20.14 - $26.88
Q1 2017	63,700	$13,200	$20.32	$18.49 - $21.24
Q4 2016	64,500	$12,158	$19.64	$17.92 - $22.44
Q3 2016	74,200	$16,067	$21.29	$20.25 - $22.48
Q2 2016	76,400	$16,706	$19.77	$17.45 - $21.88
Q1 2016	78,400	$14,753	$17.71	$14.65 - $20.50
Q4 2015	84,900	$17,548	$19.90	$16.80 - $21.35
Q3 2015	88,900	$15,385	$19.15	$16.35 - $22.35
Q2 2015	93,700	$18,858	$20.39	$19.23 - $21.67
Q1 2015	87,815	$16,334	$18.88	$16.88 - $20.19
Q4 2014	87,815	$16,334	$16.16	$13.44 - $18.96
Q3 2014	86,936	$13,522	$14.90	$13.85 - $16.58
Q2 2014	84,952	$13,437	$16.20	$14.70 - $19.34
Q1 2014	92,887	$15,632	$18.86	$16.38 - $21.82
Q4 2013	110,496	$20,373	$17.69	$16.07 - $18.84
Q3 2013	99,779	$16,753	$15.34	$12.98 - $17.22
Q2 2013	98,821	$12,755	$11.32	$10.46 - $13.07