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Costar Group, Inc.

CSGP
Exchange
Nasdaq
Industry
Services-Business Services, NEC
SEC CIK
0001057352

In the last 90 days, Costar Group, Inc. insiders filed 1 open-market purchase and 2 sales; 760 institutions reported holding it in 13F filings for Q2 2026, worth $11.7B in total; superinvestors Akre Capital Management and Weitz Investment Management hold it.

13F holders, Q1 2025

Institutional positions in Costar Group, Inc. as of Mar 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
858
+66 vs. Q4 2024
Shares held
428.6M
+26.5M (+6.6%) vs. Q4 2024
Total value
$33.9B
+$5.15B (+17.9%) vs. Q4 2024
New holders
141
378 more added
Sold out
75
263 more reduced

13 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CSGP on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2025: 858 institutions
Q1 2021: 593 institutionsQ2 2021: 607 institutionsQ3 2021: 594 institutionsQ4 2021: 633 institutionsQ1 2022: 589 institutionsQ2 2022: 591 institutionsQ3 2022: 634 institutionsQ4 2022: 704 institutionsQ1 2023: 692 institutionsQ2 2023: 714 institutionsQ3 2023: 690 institutionsQ4 2023: 737 institutionsQ1 2024: 767 institutionsQ2 2024: 767 institutionsQ3 2024: 773 institutionsQ4 2024: 805 institutionsQ1 2025: 858 institutionsQ2 2025: 873 institutionsQ3 2025: 905 institutionsQ4 2025: 847 institutionsQ1 2026: 797 institutionsQ2 2026: 760 institutions
Value heldQ1 2025: $33.9B
Q1 2021: $31.2BQ2 2021: $31.1BQ3 2021: $32.3BQ4 2021: $29.6BQ1 2022: $25.2BQ2 2022: $23.0BQ3 2022: $28.0BQ4 2022: $30.4BQ1 2023: $26.7BQ2 2023: $35.5BQ3 2023: $30.1BQ4 2023: $34.4BQ1 2024: $38.4BQ2 2024: $29.3BQ3 2024: $30.0BQ4 2024: $28.9BQ1 2025: $33.9BQ2 2025: $34.2BQ3 2025: $34.9BQ4 2025: $28.4BQ1 2026: $16.8BQ2 2026: $11.7B
Institutions holding CSGP and their total value by quarter
QuarterHoldersValue
Q2 2026760$11.7B
Q1 2026797$16.8B
Q4 2025847$28.4B
Q3 2025905$34.9B
Q2 2025873$34.2B
Q1 2025858$33.9B
Q4 2024805$28.9B
Q3 2024773$30.0B
Q2 2024767$29.3B
Q1 2024767$38.4B
Q4 2023737$34.4B
Q3 2023690$30.1B
Q2 2023714$35.5B
Q1 2023692$26.7B
Q4 2022704$30.4B
Q3 2022634$28.0B
Q2 2022591$23.0B
Q1 2022589$25.2B
Q4 2021633$29.6B
Q3 2021594$32.3B
Q2 2021607$31.1B
Q1 2021593$31.2B

Institutions, Q1 2025

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q4 2024.

Institutions holding CSGP in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Hollencrest Capital Management1$790.00%+1New
Millstone Evans Group, LLC1$790.00%+1New
Caitong International Asset Management Co., Ltd2$1580.00%−455−99.6%Reduced
Bartlett & Co. Wealth Management LLC2$1580.00%+2New
Vision Financial Markets LLC3$2380.00%+3New
GoalVest Advisory LLC3$2380.00%+3New
Legacy Wealth Managment, LLC3$2380.00%+3New
Continuum Advisory, LLC4$3170.00%00.0%Unchanged
Toth Financial Advisory Corp4$3170.00%+4New
TD Capital Management LLC4$3170.00%+4New
Stonebridge Financial Group, LLC4$3170.00%+4New
Gen-Wealth Partners Inc4$3170.00%+4New
Bear Mountain Capital, Inc.4$3310.00%+4New
Creative Financial Designs Inc5$3960.00%−15−75.0%Reduced
Parkworth Wealth Management, Inc.5$3960.00%+1+25.0%Added
Fairway Wealth LLC5$3960.00%+5New
CBIZ Investment Advisory Services, LLC6$4750.00%−104−94.5%Reduced
Brown, Lisle/Cummings, Inc.6$4750.00%+6New
American Capital Advisory, LLC6$4760.00%+6New
Strengthening Families & Communities, LLC7$5550.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC8$6330.00%+8New
PayPay Securities Corp8$7040.04%−5−38.5%Reduced
TD Waterhouse Canada Inc.9$7100.00%+9New
UMA Financial Services, Inc.9$7140.00%00.0%Unchanged
Global Trust Asset Management, LLC10$7730.00%00.0%Unchanged
Carolinas Wealth Consulting LLC10$7920.00%−5−33.3%Reduced
Key Financial Inc10$7920.00%00.0%Unchanged
Chesapeake Asset Management LLC10$7920.00%+5+100.0%Added
Mowery & Schoenfeld Wealth Management, LLC10$7930.00%−22−68.8%Reduced
Wolff Wiese Magana LLC10$7930.00%+5+100.0%Added
Richardson Financial Services Inc.11$8720.00%00.0%Unchanged
Fortitude Family Office, LLC11$8720.00%+11New
Winnow Wealth LLC12$9380.00%+4+50.0%Added
Avion Wealth14$1.00K0.00%00.0%Unchanged
Tobam13$1.00K0.00%+13New
Core Alternative Capital16$1.27K0.00%00.0%Unchanged
S&T Bank17$1.35K0.00%+17New
Principia Wealth Advisory, LLC18$1.42K0.00%+9+100.0%Added
Park Square Financial Group, LLC20$1.58K0.00%00.0%Unchanged
Bruce G. Allen Investments, LLC21$1.66K0.00%00.0%Unchanged
Clark Wealth Partners21$1.66K0.00%00.0%Unchanged
TFC Financial Management21$1.66K0.00%+11+110.0%Added
Dogwood Wealth Management LLC21$1.66K0.00%+21New
NVWM, LLC24$1.90K0.00%+7+41.2%Added
Global Financial Private Client, LLC24$1.90K0.00%+18+300.0%Added
SJS Investment Consulting Inc.25$1.98K0.00%+6+31.6%Added
Thomas J. Herzfeld Advisors, Inc.25$1.98K0.00%+25New
CKW Financial Group20$2.00K0.00%00.0%Unchanged
Nova Wealth Management, Inc.26$2.06K0.00%+26New
Cape Investment Advisory, Inc.29$2.30K0.00%−11−27.5%Reduced
Washington Trust Co30$2.38K0.00%00.0%Unchanged
N.E.W. Advisory Services LLC30$2.38K0.00%+30New
Eastern Bank31$2.46K0.00%+31New
DiNuzzo Private Wealth, Inc.31$2.46K0.00%+5+19.2%Added
Binnacle Investments Inc32$2.54K0.00%+32New
Sandy Spring Bank32$2.54K0.00%00.0%Unchanged
Graney & King, LLC35$2.77K0.00%+35New
Sierra Ocean, LLC37$2.93K0.00%−17−31.5%Reduced
Activest Wealth Management37$2.93K0.00%+37New
True Wealth Design, LLC37$2.96K0.00%+22+146.7%Added
Salem Investment Counselors Inc38$3.01K0.00%00.0%Unchanged
Accent Capital Management, LLC38$3.01K0.00%+38New
WealthTrak Capital Management LLC45$3.57K0.00%+20+80.0%Added
Hughes Financial Services, LLC46$3.64K0.00%+46New
Rakuten Securities, Inc.50$3.96K0.00%−20−28.6%Reduced
Red Tortoise LLC50$3.96K0.00%00.0%Unchanged
Valued Wealth Advisors LLC50$3.96K0.00%00.0%Unchanged
Bellwether Advisors, LLC53$4.20K0.00%−11,926−99.6%Reduced
Bellevue Asset Management, LLC56$4.44K0.00%−3−5.1%Reduced
Sachetta, LLC58$4.60K0.00%+42+262.5%Added
Raffa Wealth Management, LLC61$4.83K0.00%+21+52.5%Added
DT Investment Partners, LLC62$4.91K0.00%00.0%Unchanged
ORG Partners LLC63$4.98K0.00%−356−85.0%Reduced
E Fund Management (Hong Kong) Co., Ltd.69$5.00K0.00%−447−86.6%Reduced
Farmers & Merchants Trust Co of Chambersburg PA64$5.00K0.00%00.0%Unchanged
CoreCap Advisors, LLC73$5.78K0.00%+69+1,725.0%Added
Financial Management Professionals, Inc.74$5.86K0.00%+2+2.8%Added
Trust Co of Vermont75$5.94K0.00%−5−6.3%Reduced
Heritage Wealth Advisors76$6.02K0.00%00.0%Unchanged
Manchester Capital Management LLC77$6.10K0.00%−2−2.5%Reduced
1620 Investment Advisors, Inc.77$6.10K0.00%+77New
Beacon Capital Management, LLC82$6.50K0.00%+82New
MJT & Associates Financial Advisory Group, Inc.82$6.50K0.01%+82New
Loring Wolcott & Coolidge Fiduciary Advisors LLP80$6.55K0.00%00.0%Unchanged
Rossby Financial, LCC82$6.79K0.00%+82New
AdvisorNet Financial, Inc88$6.97K0.00%+18+25.7%Added
Carolina Wealth Advisors, LLC98$7.76K0.00%00.0%Unchanged
Concord Wealth Partners100$7.92K0.00%−53−34.6%Reduced
First United Bank Trust100$7.92K0.00%00.0%Unchanged
West Branch Capital LLC100$7.92K0.00%00.0%Unchanged
Orion Capital Management LLC100$7.92K0.00%00.0%Unchanged
Berbice Capital Management LLC100$7.92K0.01%+100New
Smithfield Trust Co90$8.00K0.00%00.0%Unchanged
Edmond de Rothschild Holding S.A.102$8.08K0.00%00.0%Unchanged
Whipplewood Advisors, LLC73$8.95K0.01%−40−35.4%Reduced
JFS Wealth Advisors, LLC115$9.11K0.00%+8+7.5%Added
Aventura Private Wealth, LLC122$9.67K0.01%00.0%Unchanged
Highline Wealth Partners LLC122$9.67K0.00%+110+916.7%Added
Dunhill Financial, LLC130$10.3K0.00%−5−3.7%Reduced
Asset Dedication, LLC131$10.4K0.00%00.0%Unchanged