COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

Asset Management One Co., Ltd.'s Holding History (CIK: 0001068855)

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

Q4 2025

Shares 183,391 Value ($000) $12,396 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 182,784 Value ($000) $15,421 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 179,394 Value ($000) $14,423 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 300,684 Value ($000) $23,823 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 287,978 Value ($000) $20,798 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 282,828 Value ($000) $21,337 Avg Close $75.84 Range $70.86 - $81.63

Q2 2024

Shares 250,526 Value ($000) $18,574 Avg Close $84.75 Range $71.90 - $96.98

Q1 2024

Shares 254,097 Value ($000) $24,546 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 262,154 Value ($000) $23,072 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 267,815 Value ($000) $20,592 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 265,336 Value ($000) $23,615 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 267,817 Value ($000) $18,439 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 256,839 Value ($000) $19,947 Avg Close $78.14 Range $68.86 - $85.37

Q3 2022

Shares 163,305 Value ($000) $11,374 Avg Close $69.42 Range $57.54 - $79.26

Q2 2022

Shares 163,125 Value ($000) $9,854 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 168,248 Value ($000) $11,206 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 300,692 Value ($000) $24,005 Avg Close $83.91 Range $75.09 - $101.05

Q3 2021

Shares 301,670 Value ($000) $25,961 Avg Close $86.44 Range $80.00 - $90.85

Q2 2021

Shares 304,094 Value ($000) $25,185 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 31,366 Value ($000) $25,779 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 32,045 Value ($000) $29,429 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 32,165 Value ($000) $27,295 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 19,706 Value ($000) $14,004 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 19,180 Value ($000) $11,261 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 19,425 Value ($000) $11,622 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 20,056 Value ($000) $11,899 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 20,094 Value ($000) $11,133 Avg Close $51.11 Range $46.90 - $56.27

Q1 2019

Shares 18,544 Value ($000) $8,649 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 58,732 Value ($000) $19,817 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 59,442 Value ($000) $24,998 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 56,184 Value ($000) $23,191 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 55,311 Value ($000) $20,061 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 54,501 Value ($000) $16,181 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 48,044 Value ($000) $12,883 Avg Close $27.75 Range $25.54 - $28.80

Q2 2017

Shares 47,941 Value ($000) $12,629 Avg Close $24.32 Range $20.14 - $26.88

Q1 2017

Shares 44,829 Value ($000) $9,288 Avg Close $20.32 Range $18.49 - $21.24

Q4 2016

Shares 48,478 Value ($000) $9,134 Avg Close $19.64 Range $17.92 - $22.44

Q3 2016

Shares 17,942 Value ($000) $3,877 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 19,050 Value ($000) $4,043 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 17,637 Value ($000) $3,289 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 15,836 Value ($000) $3,332 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 11,971 Value ($000) $1,969 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 13,918 Value ($000) $2,804 Avg Close $20.39 Range $19.23 - $21.67

Q1 2015

Shares 16,413 Value ($000) $3,243 Avg Close $18.88 Range $16.88 - $20.19

Q4 2014

Shares 17,990 Value ($000) $3,325 Avg Close $16.16 Range $13.44 - $18.96

Q3 2014

Shares 4,774 Value ($000) $743 Avg Close $14.90 Range $13.85 - $16.58

Q1 2014

Shares 3,934 Value ($000) $732 Avg Close $18.86 Range $16.38 - $21.82

Q4 2013

Shares 4,692 Value ($000) $864 Avg Close $17.69 Range $16.07 - $18.84

Q3 2013

Shares 4,839 Value ($000) $808 Avg Close $15.34 Range $12.98 - $17.22

Q2 2013

Shares 4,818 Value ($000) $622 Avg Close $11.32 Range $10.46 - $13.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	183,391	$12,396	$70.84	$62.00 - $85.24
Q3 2025	182,784	$15,421	$88.37	$79.94 - $97.43
Q2 2025	179,394	$14,423	$77.90	$71.21 - $83.68
Q1 2025	300,684	$23,823	$76.08	$68.41 - $83.03
Q4 2024	287,978	$20,798	$75.52	$68.26 - $82.49
Q3 2024	282,828	$21,337	$75.84	$70.86 - $81.63
Q2 2024	250,526	$18,574	$84.75	$71.90 - $96.98
Q1 2024	254,097	$24,546	$86.08	$79.82 - $100.38
Q4 2023	262,154	$23,072	$80.94	$67.35 - $89.11
Q3 2023	267,815	$20,592	$82.85	$75.78 - $92.30
Q2 2023	265,336	$23,615	$77.21	$67.22 - $92.36
Q1 2023	267,817	$18,439	$73.79	$65.12 - $81.15
Q4 2022	256,839	$19,947	$78.14	$68.86 - $85.37
Q3 2022	163,305	$11,374	$69.42	$57.54 - $79.26
Q2 2022	163,125	$9,854	$60.57	$53.51 - $68.39
Q1 2022	168,248	$11,206	$66.39	$49.00 - $79.73
Q4 2021	300,692	$24,005	$83.91	$75.09 - $101.05
Q3 2021	301,670	$25,961	$86.44	$80.00 - $90.85
Q2 2021	304,094	$25,185	$86.45	$80.52 - $94.35
Q1 2021	31,366	$25,779	$86.33	$74.31 - $95.28
Q4 2020	32,045	$29,429	$87.68	$78.10 - $95.12
Q3 2020	32,165	$27,295	$79.70	$66.20 - $93.90
Q2 2020	19,706	$14,004	$64.65	$52.02 - $74.71
Q1 2020	19,180	$11,261	$65.18	$50.02 - $74.67
Q4 2019	19,425	$11,622	$58.38	$51.00 - $62.35
Q3 2019	20,056	$11,899	$59.86	$55.57 - $63.94
Q2 2019	20,094	$11,133	$51.11	$46.90 - $56.27
Q1 2019	18,544	$8,649	$41.31	$32.51 - $48.49
Q4 2018	58,732	$19,817	$36.53	$31.59 - $42.50
Q3 2018	59,442	$24,998	$42.74	$39.71 - $44.84
Q2 2018	56,184	$23,191	$38.48	$34.22 - $42.25
Q1 2018	55,311	$20,061	$34.47	$29.54 - $37.86
Q4 2017	54,501	$16,181	$29.30	$26.56 - $31.47
Q3 2017	48,044	$12,883	$27.75	$25.54 - $28.80
Q2 2017	47,941	$12,629	$24.32	$20.14 - $26.88
Q1 2017	44,829	$9,288	$20.32	$18.49 - $21.24
Q4 2016	48,478	$9,134	$19.64	$17.92 - $22.44
Q3 2016	17,942	$3,877	$21.29	$20.25 - $22.48
Q2 2016	19,050	$4,043	$19.77	$17.45 - $21.88
Q1 2016	17,637	$3,289	$17.71	$14.65 - $20.50
Q4 2015	15,836	$3,332	$19.90	$16.80 - $21.35
Q3 2015	11,971	$1,969	$19.15	$16.35 - $22.35
Q2 2015	13,918	$2,804	$20.39	$19.23 - $21.67
Q1 2015	16,413	$3,243	$18.88	$16.88 - $20.19
Q4 2014	17,990	$3,325	$16.16	$13.44 - $18.96
Q3 2014	4,774	$743	$14.90	$13.85 - $16.58
Q1 2014	3,934	$732	$18.86	$16.38 - $21.82
Q4 2013	4,692	$864	$17.69	$16.07 - $18.84
Q3 2013	4,839	$808	$15.34	$12.98 - $17.22
Q2 2013	4,818	$622	$11.32	$10.46 - $13.07