COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

MILLENNIUM MANAGEMENT LLC's Holding History (CIK: 0001273087)

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

Q4 2025

Shares 601,975 Value ($000) $40,477 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 408,355 Value ($000) $34,453 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 107,317 Value ($000) $8,628 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 325,428 Value ($000) $25,784 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 434,450 Value ($000) $31,102 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 207,193 Value ($000) $15,631 Avg Close $75.84 Range $70.86 - $81.63

Q2 2024

Shares 315,582 Value ($000) $23,397 Avg Close $84.75 Range $71.90 - $96.98

Q1 2024

Shares 30,304 Value ($000) $2,927 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 80,561 Value ($000) $7,040 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 758,489 Value ($000) $58,320 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 506,712 Value ($000) $45,097 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 10,394 Value ($000) $1 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 41,934 Value ($000) $3 Avg Close $78.14 Range $68.86 - $85.37

Q2 2022

Shares 1,400,285 Value ($000) $84,591 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 615,591 Value ($000) $41,005 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 1,071,670 Value ($000) $84,694 Avg Close $83.91 Range $75.09 - $101.05

Q3 2021

Shares 757,759 Value ($000) $65,213 Avg Close $86.44 Range $80.00 - $90.85

Q2 2021

Shares 1,715,386 Value ($000) $142,068 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 194,404 Value ($000) $159,779 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 41,932 Value ($000) $38,757 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 79,363 Value ($000) $67,340 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 26,544 Value ($000) $18,864 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 2,511 Value ($000) $1,474 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 1,254 Value ($000) $750 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 138,066 Value ($000) $81,900 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 29,493 Value ($000) $16,341 Avg Close $51.11 Range $46.90 - $56.27

Q1 2019

Shares 107,473 Value ($000) $50,128 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 26,382 Value ($000) $8,900 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 59,138 Value ($000) $24,888 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 23,215 Value ($000) $9,579 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 68,176 Value ($000) $24,726 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 48,892 Value ($000) $14,518 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 21,299 Value ($000) $5,713 Avg Close $27.75 Range $25.54 - $28.80

Q2 2017

Shares 6,599 Value ($000) $1,739 Avg Close $24.32 Range $20.14 - $26.88

Q1 2017

Shares 8,701 Value ($000) $1,803 Avg Close $20.32 Range $18.49 - $21.24

Q4 2016

Shares 47,389 Value ($000) $8,932 Avg Close $19.64 Range $17.92 - $22.44

Q3 2016

Shares 7,368 Value ($000) $1,595 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 32,708 Value ($000) $7,152 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 42,474 Value ($000) $7,992 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 9,806 Value ($000) $2,027 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 4,252 Value ($000) $736 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 3,507 Value ($000) $706 Avg Close $20.39 Range $19.23 - $21.67

Q1 2015

Shares 1,545 Value ($000) $306 Avg Close $18.88 Range $16.88 - $20.19

Q4 2014

Shares 1,545 Value ($000) $284 Avg Close $16.16 Range $13.44 - $18.96

Q3 2014

Shares 21,246 Value ($000) $3,305 Avg Close $14.90 Range $13.85 - $16.58

Q2 2014

Shares 101,299 Value ($000) $16,022 Avg Close $16.20 Range $14.70 - $19.34

Q1 2014

Shares 112,141 Value ($000) $20,941 Avg Close $18.86 Range $16.38 - $21.82

Q4 2013

Shares 25,932 Value ($000) $4,787 Avg Close $17.69 Range $16.07 - $18.84

Q3 2013

Shares 12,123 Value ($000) $2,036 Avg Close $15.34 Range $12.98 - $17.22

Q2 2013

Shares 1,600 Value ($000) $207 Avg Close $11.32 Range $10.46 - $13.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	601,975	$40,477	$70.84	$62.00 - $85.24
Q3 2025	408,355	$34,453	$88.37	$79.94 - $97.43
Q2 2025	107,317	$8,628	$77.90	$71.21 - $83.68
Q1 2025	325,428	$25,784	$76.08	$68.41 - $83.03
Q4 2024	434,450	$31,102	$75.52	$68.26 - $82.49
Q3 2024	207,193	$15,631	$75.84	$70.86 - $81.63
Q2 2024	315,582	$23,397	$84.75	$71.90 - $96.98
Q1 2024	30,304	$2,927	$86.08	$79.82 - $100.38
Q4 2023	80,561	$7,040	$80.94	$67.35 - $89.11
Q3 2023	758,489	$58,320	$82.85	$75.78 - $92.30
Q2 2023	506,712	$45,097	$77.21	$67.22 - $92.36
Q1 2023	10,394	$1	$73.79	$65.12 - $81.15
Q4 2022	41,934	$3	$78.14	$68.86 - $85.37
Q2 2022	1,400,285	$84,591	$60.57	$53.51 - $68.39
Q1 2022	615,591	$41,005	$66.39	$49.00 - $79.73
Q4 2021	1,071,670	$84,694	$83.91	$75.09 - $101.05
Q3 2021	757,759	$65,213	$86.44	$80.00 - $90.85
Q2 2021	1,715,386	$142,068	$86.45	$80.52 - $94.35
Q1 2021	194,404	$159,779	$86.33	$74.31 - $95.28
Q4 2020	41,932	$38,757	$87.68	$78.10 - $95.12
Q3 2020	79,363	$67,340	$79.70	$66.20 - $93.90
Q2 2020	26,544	$18,864	$64.65	$52.02 - $74.71
Q1 2020	2,511	$1,474	$65.18	$50.02 - $74.67
Q4 2019	1,254	$750	$58.38	$51.00 - $62.35
Q3 2019	138,066	$81,900	$59.86	$55.57 - $63.94
Q2 2019	29,493	$16,341	$51.11	$46.90 - $56.27
Q1 2019	107,473	$50,128	$41.31	$32.51 - $48.49
Q4 2018	26,382	$8,900	$36.53	$31.59 - $42.50
Q3 2018	59,138	$24,888	$42.74	$39.71 - $44.84
Q2 2018	23,215	$9,579	$38.48	$34.22 - $42.25
Q1 2018	68,176	$24,726	$34.47	$29.54 - $37.86
Q4 2017	48,892	$14,518	$29.30	$26.56 - $31.47
Q3 2017	21,299	$5,713	$27.75	$25.54 - $28.80
Q2 2017	6,599	$1,739	$24.32	$20.14 - $26.88
Q1 2017	8,701	$1,803	$20.32	$18.49 - $21.24
Q4 2016	47,389	$8,932	$19.64	$17.92 - $22.44
Q3 2016	7,368	$1,595	$21.29	$20.25 - $22.48
Q2 2016	32,708	$7,152	$19.77	$17.45 - $21.88
Q1 2016	42,474	$7,992	$17.71	$14.65 - $20.50
Q4 2015	9,806	$2,027	$19.90	$16.80 - $21.35
Q3 2015	4,252	$736	$19.15	$16.35 - $22.35
Q2 2015	3,507	$706	$20.39	$19.23 - $21.67
Q1 2015	1,545	$306	$18.88	$16.88 - $20.19
Q4 2014	1,545	$284	$16.16	$13.44 - $18.96
Q3 2014	21,246	$3,305	$14.90	$13.85 - $16.58
Q2 2014	101,299	$16,022	$16.20	$14.70 - $19.34
Q1 2014	112,141	$20,941	$18.86	$16.38 - $21.82
Q4 2013	25,932	$4,787	$17.69	$16.07 - $18.84
Q3 2013	12,123	$2,036	$15.34	$12.98 - $17.22
Q2 2013	1,600	$207	$11.32	$10.46 - $13.07