COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

FRED ALGER MANAGEMENT, LLC's Holding History (CIK: 0000003520)

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

Q4 2025

Shares 112,357 Value ($000) $7,555 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 177,032 Value ($000) $14,936 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 146,621 Value ($000) $11,788 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 129,182 Value ($000) $10,235 Avg Close $76.08 Range $68.41 - $83.03

Q4 2024

Shares 92,787 Value ($000) $6,643 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 289,056 Value ($000) $21,806 Avg Close $75.84 Range $70.86 - $81.63

Q2 2024

Shares 285,245 Value ($000) $21,148 Avg Close $84.75 Range $71.90 - $96.98

Q1 2024

Shares 349,584 Value ($000) $33,770 Avg Close $86.08 Range $79.82 - $100.38

Q4 2023

Shares 362,360 Value ($000) $31,667 Avg Close $80.94 Range $67.35 - $89.11

Q3 2023

Shares 439,295 Value ($000) $33,777 Avg Close $82.85 Range $75.78 - $92.30

Q2 2023

Shares 403,204 Value ($000) $35,885 Avg Close $77.21 Range $67.22 - $92.36

Q1 2023

Shares 469,027 Value ($000) $32,293 Avg Close $73.79 Range $65.12 - $81.15

Q4 2022

Shares 501,232 Value ($000) $38,735 Avg Close $78.14 Range $68.86 - $85.37

Q3 2022

Shares 399,597 Value ($000) $27,832 Avg Close $69.42 Range $57.54 - $79.26

Q2 2022

Shares 85,101 Value ($000) $5,141 Avg Close $60.57 Range $53.51 - $68.39

Q1 2022

Shares 198,127 Value ($000) $13,197 Avg Close $66.39 Range $49.00 - $79.73

Q4 2021

Shares 1,286,589 Value ($000) $101,679 Avg Close $83.91 Range $75.09 - $101.05

Q3 2021

Shares 1,041,299 Value ($000) $89,614 Avg Close $86.44 Range $80.00 - $90.85

Q2 2021

Shares 2,230,211 Value ($000) $184,706 Avg Close $86.45 Range $80.52 - $94.35

Q1 2021

Shares 300,083 Value ($000) $246,635 Avg Close $86.33 Range $74.31 - $95.28

Q4 2020

Shares 193,266 Value ($000) $178,632 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 187,509 Value ($000) $159,103 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 215,383 Value ($000) $153,066 Avg Close $64.65 Range $52.02 - $74.71

Q1 2020

Shares 123,018 Value ($000) $72,237 Avg Close $65.18 Range $50.02 - $74.67

Q4 2019

Shares 94,193 Value ($000) $56,356 Avg Close $58.38 Range $51.00 - $62.35

Q3 2019

Shares 49,739 Value ($000) $29,505 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 56,587 Value ($000) $31,353 Avg Close $51.11 Range $46.90 - $56.27

Q1 2019

Shares 80,365 Value ($000) $37,484 Avg Close $41.31 Range $32.51 - $48.49

Q4 2018

Shares 169 Value ($000) $57 Avg Close $36.53 Range $31.59 - $42.50

Q3 2018

Shares 203 Value ($000) $85 Avg Close $42.74 Range $39.71 - $44.84

Q2 2018

Shares 27,736 Value ($000) $11,445 Avg Close $38.48 Range $34.22 - $42.25

Q1 2018

Shares 13,706 Value ($000) $4,971 Avg Close $34.47 Range $29.54 - $37.86

Q4 2017

Shares 67 Value ($000) $20 Avg Close $29.30 Range $26.56 - $31.47

Q3 2017

Shares 67 Value ($000) $18 Avg Close $27.75 Range $25.54 - $28.80

Q2 2017

Shares 67 Value ($000) $18 Avg Close $24.32 Range $20.14 - $26.88

Q3 2016

Shares 767 Value ($000) $166 Avg Close $21.29 Range $20.25 - $22.48

Q2 2016

Shares 15,266 Value ($000) $3,338 Avg Close $19.77 Range $17.45 - $21.88

Q1 2016

Shares 39,792 Value ($000) $7,488 Avg Close $17.71 Range $14.65 - $20.50

Q4 2015

Shares 65,283 Value ($000) $13,493 Avg Close $19.90 Range $16.80 - $21.35

Q3 2015

Shares 53,820 Value ($000) $9,314 Avg Close $19.15 Range $16.35 - $22.35

Q2 2015

Shares 239,729 Value ($000) $48,248 Avg Close $20.39 Range $19.23 - $21.67

Q1 2015

Shares 275,234 Value ($000) $54,450 Avg Close $18.88 Range $16.88 - $20.19

Q4 2014

Shares 322,009 Value ($000) $59,131 Avg Close $16.16 Range $13.44 - $18.96

Q3 2014

Shares 349,493 Value ($000) $54,360 Avg Close $14.90 Range $13.85 - $16.58

Q2 2014

Shares 776,204 Value ($000) $122,772 Avg Close $16.20 Range $14.70 - $19.34

Q1 2014

Shares 128,604 Value ($000) $24,016 Avg Close $18.86 Range $16.38 - $21.82

Q4 2013

Shares 153,178 Value ($000) $28,274 Avg Close $17.69 Range $16.07 - $18.84

Q3 2013

Shares 175,694 Value ($000) $29,501 Avg Close $15.34 Range $12.98 - $17.22

Q2 2013

Shares 201,513 Value ($000) $26,009 Avg Close $11.32 Range $10.46 - $13.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	112,357	$7,555	$70.84	$62.00 - $85.24
Q3 2025	177,032	$14,936	$88.37	$79.94 - $97.43
Q2 2025	146,621	$11,788	$77.90	$71.21 - $83.68
Q1 2025	129,182	$10,235	$76.08	$68.41 - $83.03
Q4 2024	92,787	$6,643	$75.52	$68.26 - $82.49
Q3 2024	289,056	$21,806	$75.84	$70.86 - $81.63
Q2 2024	285,245	$21,148	$84.75	$71.90 - $96.98
Q1 2024	349,584	$33,770	$86.08	$79.82 - $100.38
Q4 2023	362,360	$31,667	$80.94	$67.35 - $89.11
Q3 2023	439,295	$33,777	$82.85	$75.78 - $92.30
Q2 2023	403,204	$35,885	$77.21	$67.22 - $92.36
Q1 2023	469,027	$32,293	$73.79	$65.12 - $81.15
Q4 2022	501,232	$38,735	$78.14	$68.86 - $85.37
Q3 2022	399,597	$27,832	$69.42	$57.54 - $79.26
Q2 2022	85,101	$5,141	$60.57	$53.51 - $68.39
Q1 2022	198,127	$13,197	$66.39	$49.00 - $79.73
Q4 2021	1,286,589	$101,679	$83.91	$75.09 - $101.05
Q3 2021	1,041,299	$89,614	$86.44	$80.00 - $90.85
Q2 2021	2,230,211	$184,706	$86.45	$80.52 - $94.35
Q1 2021	300,083	$246,635	$86.33	$74.31 - $95.28
Q4 2020	193,266	$178,632	$87.68	$78.10 - $95.12
Q3 2020	187,509	$159,103	$79.70	$66.20 - $93.90
Q2 2020	215,383	$153,066	$64.65	$52.02 - $74.71
Q1 2020	123,018	$72,237	$65.18	$50.02 - $74.67
Q4 2019	94,193	$56,356	$58.38	$51.00 - $62.35
Q3 2019	49,739	$29,505	$59.86	$55.57 - $63.94
Q2 2019	56,587	$31,353	$51.11	$46.90 - $56.27
Q1 2019	80,365	$37,484	$41.31	$32.51 - $48.49
Q4 2018	169	$57	$36.53	$31.59 - $42.50
Q3 2018	203	$85	$42.74	$39.71 - $44.84
Q2 2018	27,736	$11,445	$38.48	$34.22 - $42.25
Q1 2018	13,706	$4,971	$34.47	$29.54 - $37.86
Q4 2017	67	$20	$29.30	$26.56 - $31.47
Q3 2017	67	$18	$27.75	$25.54 - $28.80
Q2 2017	67	$18	$24.32	$20.14 - $26.88
Q3 2016	767	$166	$21.29	$20.25 - $22.48
Q2 2016	15,266	$3,338	$19.77	$17.45 - $21.88
Q1 2016	39,792	$7,488	$17.71	$14.65 - $20.50
Q4 2015	65,283	$13,493	$19.90	$16.80 - $21.35
Q3 2015	53,820	$9,314	$19.15	$16.35 - $22.35
Q2 2015	239,729	$48,248	$20.39	$19.23 - $21.67
Q1 2015	275,234	$54,450	$18.88	$16.88 - $20.19
Q4 2014	322,009	$59,131	$16.16	$13.44 - $18.96
Q3 2014	349,493	$54,360	$14.90	$13.85 - $16.58
Q2 2014	776,204	$122,772	$16.20	$14.70 - $19.34
Q1 2014	128,604	$24,016	$18.86	$16.38 - $21.82
Q4 2013	153,178	$28,274	$17.69	$16.07 - $18.84
Q3 2013	175,694	$29,501	$15.34	$12.98 - $17.22
Q2 2013	201,513	$26,009	$11.32	$10.46 - $13.07