COSTAR GROUP, INC. (CSGP) — Institutional Holders, Q2 2026

762 institutional investment managers reported a CSGP position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $11.7B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← CSGP stock profile

CSGP in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

109

Added to

305

Trimmed

265

Sold out

143

Biggest buyers

AQR CAPITAL MANAGEMENTAdded · +7,182,770 sh+$203.4M
EdgePoint Investment GroupNew · +5,950,002 sh+$168.5M
BAMCOAdded · +5,312,588 sh+$150.5M
Qube Research & Technologies LtdNew · +3,218,369 sh+$91.1M
FEDERATED HERMESAdded · +3,128,769 sh+$88.6M

Biggest sellers

PRINCIPAL FINANCIAL GROUPTrimmed · -13,905,398 sh-$393.8M
D. E. ShawTrimmed · -4,866,291 sh-$137.8M
GOLDMAN SACHS GROUPTrimmed · -4,116,328 sh-$116.6M
POLEN CAPITAL MANAGEMENTTrimmed · -3,811,054 sh-$107.9M
TIGER GLOBAL MANAGEMENTSold out · -1,500,000 sh-$42.5M

CSGP 13F holders ranked 1–100 of 762

Institutional investors reporting a position in COSTAR GROUP, INC. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	VANGUARD PORTFOLIO MANAGEMENT#1 · 37,914,844 sh	37,914,844	$1.1B	0.05%	-0.8%
2	BlackRock#2 · 33,813,969 sh	33,813,969	$957.6M	0.01%	0.0%
3	VANGUARD CAPITAL MANAGEMENT#3 · 26,683,792 sh	26,683,792	$755.7M	0.02%	-2.7%
4	BAMCO#4 · 21,626,763 sh	21,626,763	$612.5M	0.92%	+32.6%
5	STATE STREET#5 · 18,410,876 sh	18,410,876	$521.4M	0.02%	-1.3%
6	Capital International Investors#6 · 16,643,016 sh	16,643,016	$471.3M	0.10%	+7.3%
7	BAILLIE GIFFORD#7 · 13,154,165 sh	13,154,165	$372.5M	0.34%	-3.4%
8	GEODE CAPITAL MANAGEMENT#8 · 12,166,469 sh	12,166,469	$343.3M	0.02%	-2.3%
9	AKRE CAPITAL MANAGEMENT#9 · 11,699,396 sh	11,699,396	$331.3M	6.47%	+13.1%
10	POLEN CAPITAL MANAGEMENT#10 · 8,759,314 sh	8,759,314	$248.1M	2.14%	-30.3%
11	AQR CAPITAL MANAGEMENT#11 · 8,445,474 sh	8,445,474	$239.2M	0.08%	+568.8%
12	Jupiter Topco#12 · 7,832,860 sh	7,832,860	$221.8M	0.09%	—
13	Invesco Ltd.#13 · 6,808,377 sh	6,808,377	$192.8M	0.02%	-4.6%
14	EdgePoint Investment Group#14 · 5,950,002 sh	5,950,002	$168.5M	1.27%	New
15	NORGES BANK#15 · 5,949,912 sh	5,949,912	$168.5M	0.02%	—
16	MORGAN STANLEY#16 · 5,485,870 sh	5,485,870	$155.4M	<0.01%	+1.4%
17	Meritage Group#17 · 5,394,164 sh	5,394,164	$152.8M	5.89%	+62.0%
18	JPMORGAN CHASE#18 · 4,939,994 sh	4,939,994	$145.4M	<0.01%	+167.1%
19	GOLDMAN SACHS GROUP#19 · 5,129,484 sh	5,129,484	$145.3M	0.01%	-44.5%
20	FEDERATED HERMES#20 · 4,426,727 sh	4,426,727	$125.4M	0.18%	+241.1%
21	Capital Research Global Investors#21 · 4,193,733 sh	4,193,733	$118.8M	0.02%	-4.1%
22	PRINCIPAL FINANCIAL GROUP#22 · 3,790,794 sh	3,790,794	$107.4M	0.05%	-78.6%
23	NORTHERN#23 · 3,448,839 sh	3,448,839	$97.7M	0.01%	+0.5%
24	Qube Research & Technologies Ltd#24 · 3,218,369 sh	3,218,369	$91.1M	0.08%	New
25	BNP Paribas Asset Management Holding S.A.#25 · 3,136,727 sh	3,136,727	$88.9M	0.09%	+17.2%
26	Amundi#26 · 3,135,933 sh	3,135,933	$88.8M	0.02%	-4.4%
27	VAN ECK ASSOCIATES#27 · 3,078,903 sh	3,078,903	$87.2M	0.05%	-11.5%
28	MASSACHUSETTS FINANCIAL SERVICES#28 · 2,983,969 sh	2,983,969	$84.5M	0.03%	+212.1%
29	CHARLES SCHWAB INVESTMENT MANAGEMENT#29 · 2,962,442 sh	2,962,442	$83.9M	0.01%	+3.1%
30	BANK OF AMERICA#30 · 2,735,102 sh	2,735,102	$77.5M	<0.01%	-23.3%
31	Spyglass Capital Management#31 · 2,694,697 sh	2,694,697	$76.3M	4.13%	+142.5%
32	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#32 · 2,521,571 sh	2,521,571	$71.4M	0.01%	+4.0%
33	CANADA PENSION PLAN INVESTMENT BOARD#33 · 2,481,641 sh	2,481,641	$70.3M	0.04%	+23.4%
34	FMR#34 · 2,474,902 sh	2,474,902	$70.1M	<0.01%	-12.6%
35	NOMURA ASSET MANAGEMENT INTERNATIONAL#35 · 2,403,003 sh	2,403,003	$68.1M	0.10%	+3.0%
36	Ensign Peak Advisors#36 · 2,373,407 sh	2,373,407	$67.2M	0.11%	-13.2%
37	UBS Group AG#37 · 2,328,376 sh	2,328,376	$65.9M	<0.01%	+75.6%
38	VANGUARD FIDUCIARY#38 · 2,297,974 sh	2,297,974	$65.1M	0.01%	-3.9%
39	DEUTSCHE BANK AG\#39 · 2,264,379 sh	2,264,379	$64.1M	0.02%	+19.2%
40	BANK OF MONTREAL#40 · 2,209,141 sh	2,209,141	$62.6M	0.02%	-11.2%
41	JANE STREET GROUP#41 · 2,162,322 sh	2,162,322	$61.2M	<0.01%	+98.8%
42	BECK MACK & OLIVER#42 · 2,084,233 sh	2,084,233	$59.0M	1.15%	-28.8%
43	Bank of New York Mellon#43 · 2,005,395 sh	2,005,395	$56.8M	<0.01%	-16.5%
44	Erste Asset Management GmbH#44 · 1,700,000 sh	1,700,000	$49.8M	0.39%	+277.8%
45	THOMPSON SIEGEL & WALMSLEY#45 · 1,744,040 sh	1,744,040	$49.4M	0.89%	+183.5%
46	Legal & General Group Plc#46 · 1,682,774 sh	1,682,774	$47.7M	<0.01%	-44.4%
47	BNP PARIBAS FINANCIAL MARKETS#47 · 1,578,322 sh	1,578,322	$44.7M	0.02%	+105.3%
48	HSBC PLC#48 · 1,570,774 sh	1,570,774	$44.5M	0.02%	+16.6%
49	Fiera Capital#49 · 1,566,845 sh	1,566,845	$44.4M	0.16%	+225.3%
50	VOLORIDGE INVESTMENT MANAGEMENT#50 · 1,543,483 sh	1,543,483	$43.7M	0.19%	+16.1%
51	ENVESTNET ASSET MANAGEMENT#51 · 1,535,584 sh	1,535,584	$43.5M	0.01%	-14.8%
52	DIMENSIONAL FUND ADVISORS#52 · 1,515,376 sh	1,515,376	$42.9M	<0.01%	-36.9%
53	Pictet Asset Management Holding SA#53 · 1,470,824 sh	1,470,824	$41.7M	0.04%	+7.2%
54	ROYAL BANK OF CANADA#54 · 1,467,115 sh	1,467,115	$41.5M	<0.01%	+2.2%
55	Squarepoint Ops#55 · 1,442,049 sh	1,442,049	$40.8M	0.05%	+84.3%
56	MARSHALL WACE, LLP#56 · 1,381,204 sh	1,381,204	$39.1M	0.03%	+167.0%
57	Nuveen#57 · 1,325,564 sh	1,325,564	$37.5M	<0.01%	-31.3%
58	DF DENT#58 · 1,319,009 sh	1,319,009	$37.4M	0.71%	-17.8%
59	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#59 · 1,299,558 sh	1,299,558	$36.8M	0.02%	+3076.5%
60	WELLS FARGO & COMPANY#60 · 1,253,821 sh	1,253,821	$35.5M	<0.01%	-10.6%
61	Swiss National Bank#61 · 1,183,765 sh	1,183,765	$33.5M	0.02%	-4.8%
62	Connor, Clark & Lunn Investment Management Ltd.#62 · 1,169,688 sh	1,169,688	$33.1M	0.06%	+986.3%
63	Douglas Lane & Associates#63 · 1,168,859 sh	1,168,859	$33.1M	—	+45.4%
64	TWO SIGMA INVESTMENTS#64 · 1,104,950 sh	1,104,950	$31.3M	0.02%	+264.7%
65	RIVERBRIDGE PARTNERS#65 · 1,091,535 sh	1,091,535	$30.9M	0.86%	-11.1%
66	D. E. Shaw#66 · 1,043,332 sh	1,043,332	$29.5M	0.01%	-82.3%
67	Mitsubishi UFJ Asset Management , Ltd.#67 · 1,015,380 sh	1,015,380	$28.8M	0.02%	-3.5%
68	Focus Partners Wealth#68 · 936,775 sh	936,775	$26.5M	0.03%	+1.6%
69	Sumitomo Mitsui#69 · 925,120 sh	925,120	$26.2M	0.01%	-3.0%
70	Man Group plc#70 · 921,094 sh	921,094	$26.1M	0.04%	+1323.0%
71	CAPITAL FUND MANAGEMENT S.A.#71 · 902,723 sh	902,723	$25.6M	0.11%	+1847.5%
72	CITIGROUP#72 · 889,581 sh	889,581	$25.2M	<0.01%	-6.7%
73	Vanguard Global Advisers#73 · 881,001 sh	881,001	$24.9M	0.01%	-5.1%
74	PRIMECAP MANAGEMENT#74 · 821,600 sh	821,600	$23.3M	0.01%	+2.2%
75	RHUMBLINE ADVISERS#75 · 790,116 sh	790,116	$22.4M	0.02%	-0.3%
76	VANGUARD ASSET MANAGEMENT, Ltd#76 · 772,828 sh	772,828	$21.9M	0.01%	+7.7%
77	Russell Investments Group, Ltd.#77 · 762,930 sh	762,930	$21.6M	0.02%	+118.1%
78	BARCLAYS PLC#78 · 758,649 sh	758,649	$21.5M	<0.01%	-38.4%
79	Petrus Company, LTA#79 · 756,200 sh	756,200	$21.4M	2.01%	0.0%
80	MILLENNIUM MANAGEMENT#80 · 746,995 sh	746,995	$21.2M	<0.01%	+504.4%
81	CITADEL ADVISORS#81 · 741,898 sh	741,898	$21.0M	<0.01%	-31.8%
82	Trexquant Investment#82 · 740,241 sh	740,241	$21.0M	0.12%	+913.1%
83	AMERICAN CAPITAL MANAGEMENT#83 · 725,143 sh	725,143	$20.5M	0.92%	-12.1%
84	Korea Investment#84 · 698,417 sh	698,417	$19.8M	0.04%	+279.8%
85	PEREGRINE CAPITAL MANAGEMENT#85 · 692,753 sh	692,753	$19.6M	0.64%	-0.9%
86	PRICE T ROWE ASSOCIATES#86 · 686,023 sh	686,023	$19.4M	<0.01%	-54.8%
87	BLAIR WILLIAM#87 · 658,159 sh	658,159	$18.6M	0.05%	-26.9%
88	ALLIANCEBERNSTEIN L.P.#88 · 458,488 sh	458,488	$18.5M	<0.01%	+12.5%
89	Gotham Asset Management#89 · 635,988 sh	635,988	$18.0M	0.04%	+42.3%
90	TUDOR INVESTMENT ET AL#90 · 627,490 sh	627,490	$17.8M	0.02%	+250.0%
91	Mitsubishi UFJ & Banking#91 · 596,676 sh	596,676	$16.9M	0.04%	+40.9%
92	Quantinno Capital Management#92 · 577,996 sh	577,996	$16.4M	0.02%	+69.9%
93	Chicago Capital#93 · 526,958 sh	526,958	$14.9M	—	-50.1%
94	United Asset Strategies#94 · 489,008 sh	489,008	$13.8M	0.98%	New
95	NEW YORK STATE COMMON RETIREMENT FUND#95 · 487,676 sh	487,676	$13.8M	0.02%	+137.5%
96	CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#96 · 478,042 sh	478,042	$13.5M	<0.01%	-10.3%
97	NZS Capital#97 · 475,551 sh	475,551	$13.5M	0.35%	-33.0%
98	ExodusPoint Capital Management#98 · 458,765 sh	458,765	$13.0M	0.08%	+1773.8%
99	FORA Capital#99 · 443,586 sh	443,586	$12.6M	0.86%	+76.0%
100	JACOBS LEVY EQUITY MANAGEMENT#100 · 441,412 sh	441,412	$12.5M	0.04%	New

Funds that sold out of CSGP in Q2 2026 (143)

Held CSGP at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held CSGP in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
TIGER GLOBAL MANAGEMENT1,500,000 sh	1,500,000	$60.5M
Greenhouse Funds LLLP1,377,305 sh	1,377,305	$55.6M
CAPITOLIS LIQUID GLOBAL MARKETS1,355,000 sh	1,355,000	$54.7M
Stephens Investment Management Group872,463 sh	872,463	$35.2M
Corvex Management851,734 sh	851,734	$34.4M
TimesSquare Capital Management795,580 sh	795,580	$32.1M
Weiss Asset Management497,500 sh	497,500	$20.1M
RUSH ISLAND MANAGEMENT483,200 sh	483,200	$19.5M
ShawSpring Partners339,081 sh	339,081	$13.7M
Foster Victor Wealth Advisors340,762 sh	340,762	$12.8M
BSN Capital Partners Ltd150,857 sh	150,857	$11.8M
MIZUHO MARKETS AMERICAS275,876 sh	275,876	$11.1M
LMR Partners LLP252,950 sh	252,950	$10.2M
NICHOLAS COMPANY214,294 sh	214,294	$8.6M
YCG195,980 sh	195,980	$7.9M
CORTLAND ASSOCIATES181,019 sh	181,019	$7.3M
Tredje AP-fonden161,654 sh	161,654	$6.5M
Granahan Investment Management161,047 sh	161,047	$6.5M
Motley Fool Wealth Management153,002 sh	153,002	$6.2M
EVR Research130,000 sh	130,000	$5.2M
WINTON GROUP Ltd101,423 sh	101,423	$4.1M
GF FUND MANAGEMENT LTD.86,853 sh	86,853	$3.5M
Solidarity Wealth81,303 sh	81,303	$3.3M
USS Investment Management Ltd78,020 sh	78,020	$3.1M
Edgestream Partners, L.P.74,431 sh	74,431	$3.0M
Blue Zone Wealth Advisors71,468 sh	71,468	$2.9M
Americana Partners57,568 sh	57,568	$2.3M
iA Global Asset Management50,393 sh	50,393	$2.0M
SHELTON CAPITAL MANAGEMENT48,672 sh	48,672	$2.0M
PROFUND ADVISORS32,545 sh	32,545	$1.3M
Harvest Fund Management , Ltd31,007 sh	31,007	$1.3M
SEGALL BRYANT & HAMILL26,988 sh	26,988	$1.2M
PEAK626,037 sh	26,037	$1.1M
Aurora Investment Managers22,187 sh	22,187	$895.0K
ASR Vermogensbeheer N.V.21,936 sh	21,936	$884.8K
COMMERCE BANK20,452 sh	20,452	$825.0K
QUADRANT CAPITAL GROUP33,722 sh	33,722	$729.1K
Osmosis Investment Management UK Ltd16,392 sh	16,392	$661.3K
Farringdon Capital, Ltd.15,697 sh	15,697	$633.2K
PKO Investment Management Joint-Stock15,000 sh	15,000	$605.1K
E Fund Management , Ltd.14,915 sh	14,915	$601.7K
MOODY NATIONAL BANK DIVISION14,286 sh	14,286	$576.3K
AXA S.A.13,908 sh	13,908	$561.0K
Meiji Yasuda Life Insurance13,720 sh	13,720	$553.5K
China Universal Asset Management , Ltd.11,809 sh	11,809	$476.4K
Avanza Fonder AB11,766 sh	11,766	$474.6K
Venturi Wealth Management11,337 sh	11,337	$457.3K
Capula Management Ltd10,430 sh	10,430	$420.7K
Accretive Wealth Partners10,249 sh	10,249	$413.4K
Neo Ivy Capital Management9,884 sh	9,884	$398.7K
Alliance Wealth Advisors9,394 sh	9,394	$379.0K
DAVENPORT9,305 sh	9,305	$375.3K
Beacon Pointe Advisors9,073 sh	9,073	$366.0K
WEALTH ALLIANCE9,048 sh	9,048	$365.0K
Caprock Group8,981 sh	8,981	$362.3K
Voya Financial Advisors8,773 sh	8,773	$348.9K
Assenagon Asset Management S.A.8,599 sh	8,599	$346.9K
Bayesian Capital Management8,100 sh	8,100	$326.8K
Pitcairn Wealth Advisors4,853 sh	4,853	$326.3K
Conestoga Capital Advisors7,859 sh	7,859	$317.0K
Point7,810 sh	7,810	$315.1K
COMMERZBANK AKTIENGESELLSCHAFT7,761 sh	7,761	$313.0K
Sowell Financial Services7,497 sh	7,497	$302.4K
STANSBERRY ASSET MANAGEMENT7,463 sh	7,463	$301.1K
CHOREO7,279 sh	7,279	$293.6K
Jump Financial7,141 sh	7,141	$288.1K
Wheels Up Wealth6,940 sh	6,940	$280.0K
IMC-Chicago6,637 sh	6,637	$267.7K
TCW GROUP6,583 sh	6,583	$265.6K
SIG BROKERAGE6,424 sh	6,424	$259.1K
B.O.S.S. Retirement Advisors6,360 sh	6,360	$256.6K
TEACHER RETIREMENT SYSTEM OF TEXAS6,304 sh	6,304	$254.3K
CIBC WORLD MARKET6,299 sh	6,299	$254.1K
Baron Wealth Management6,277 sh	6,277	$253.2K
Integrated Advisors Network6,140 sh	6,140	$247.7K
Davidson Kahn Capital Management6,156 sh	6,156	$246.7K
BRIDGES INVESTMENT MANAGEMENT6,000 sh	6,000	$242.0K
Riverview Capital Advisers5,972 sh	5,972	$240.9K
HENGEHOLD CAPITAL MANAGEMENT5,932 sh	5,932	$239.3K
Fidelis Capital Partners5,770 sh	5,770	$232.8K
GROUPAMA ASSET MANAGMENT5,705 sh	5,705	$230.1K
Fifth Third Wealth Advisors5,638 sh	5,638	$227.4K
SAPIENT CAPITAL5,531 sh	5,531	$223.1K
Marks Group Wealth Management5,465 sh	5,465	$220.5K
Alpha Family5,410 sh	5,410	$218.2K
Integrated Investment Consultants5,245 sh	5,245	$211.6K
Pembroke Management, LTD5,241 sh	5,241	$211.4K
Wallace Advisory Group5,191 sh	5,191	$209.4K
MIRABELLA FINANCIAL SERVICES LLP5,077 sh	5,077	$204.8K
Checchi Capital Advisers5,061 sh	5,061	$204.2K
EMERALD ADVISERS4,808 sh	4,808	$194.0K
Advisory Services Network4,202 sh	4,202	$169.5K
Arkos Global Advisors2,660 sh	2,660	$107.0K
WESTPAC BANKING2,306 sh	2,306	$93.0K
DARA CAPITAL US1,732 sh	1,732	$69.9K
Steward Partners Investment Advisory1,621 sh	1,621	$65.4K
Select Equity Group, L.P.767 sh	767	$30.9K
VEGA INVESTMENT SOLUTIONS629 sh	629	$25.4K
Timothy G. Youngquist 2020 Irrevocable625 sh	625	$25.2K
Annis Gardner Whiting Capital Advisors487 sh	487	$19.6K

And 43 smaller positions.

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.