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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, Q3 2021

Institutional positions in Costar Group, Inc. as of Sep 30, 2021. 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
594
−8 vs. Q2 2021
Shares held
375.4M
+407.8K (+0.1%) vs. Q2 2021
Total value
$32.3B
+$1.24B (+4.0%) vs. Q2 2021
New holders
66
239 more added
Sold out
74
199 more reduced

5 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2021: 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 holdersQ3 2021: 594 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 heldQ3 2021: $32.3B
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, Q3 2021

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q2 2021.

Institutions holding CSGP in Q3 2021
InstitutionSharesValue% of portfolioChange in sharesAction
HC Financial Advisors Inc10$1.00K0.00%00.0%Unchanged
Patriot Financial Group Insurance Agency, LLC10$1.00K0.00%00.0%Unchanged
Global Trust Asset Management, LLC10$1.00K0.00%00.0%Unchanged
Private Ocean, LLC10$1.00K0.00%+10New
Global Retirement Partners, LLC17$1.00K0.00%+17New
Key Financial Inc10$1.00K0.00%+10New
Exane Derivatives20$1.72K0.00%00.0%Unchanged
HighMark Wealth Management LLC22$2.00K0.00%−18−45.0%Reduced
Salem Investment Counselors Inc20$2.00K0.00%00.0%Unchanged
True Link Financial Advisors, LLC20$2.00K0.00%00.0%Unchanged
Newbridge Financial Services Group, Inc.20$2.00K0.00%−10−33.3%Reduced
Baystate Wealth Management LLC40$3.00K0.00%00.0%Unchanged
Stonebridge Capital Advisors LLC30$3.00K0.00%00.0%Unchanged
Prestige Wealth Management Group LLC30$3.00K0.00%00.0%Unchanged
Hartford Financial Management Inc.30$3.00K0.00%+30New
Clean Yield Group40$3.00K0.00%+40New
Red Tortoise LLC50$3.00K0.00%+50New
Raffa Wealth Management, LLC40$3.44K0.00%00.0%Unchanged
Concord Wealth Partners50$4.00K0.00%−100−66.7%Reduced
Perkins Coie Trust Co50$4.00K0.00%00.0%Unchanged
Selective Wealth Management, Inc.50$4.00K0.00%00.0%Unchanged
Glassman Wealth Services43$4.00K0.00%+10+30.3%Added
Wolff Wiese Magana LLC50$4.00K0.00%+50New
BerganKDV Wealth Management, LLC63$5.00K0.00%+3+5.0%Added
Bellevue Asset Management, LLC56$5.00K0.00%+6+12.0%Added
Jacobi Capital Management LLC70$6.00K0.00%−280−80.0%Reduced
Mizuho Securities Co. Ltd.70$6.00K0.00%00.0%Unchanged
Investors Research Corp70$6.00K0.00%00.0%Unchanged
Rockbridge Investment Management, LCC70$6.00K0.00%00.0%Unchanged
Washington Trust Co72$6.00K0.00%+12+20.0%Added
Hanson & Doremus Investment Management70$6.00K0.00%+70New
Heritage Wealth Advisors80$6.88K0.00%00.0%Unchanged
Loring Wolcott & Coolidge Fiduciary Advisors LLP80$7.00K0.00%+72+900.0%Added
Optimum Investment Advisors83$7.00K0.00%+83New
Simon Quick Advisors, LLC100$8.00K0.00%+10+11.1%Added
Steward Partners Investment Advisory, LLC90$8.00K0.00%00.0%Unchanged
BI Asset Management Fondsmaeglerselskab A/S90$8.00K0.00%00.0%Unchanged
Asset Dedication, LLC90$8.00K0.00%+90New
West Branch Capital LLC100$9.00K0.00%00.0%Unchanged
Orion Capital Management LLC100$9.00K0.01%00.0%Unchanged
Bellwether Advisors, LLC116$9.00K0.00%+116New
Bell Investment Advisors, Inc104$9.00K0.00%+104New
Jackson Wealth Management, LLC59,114$12.0K0.15%+30,024+103.2%Added
Allworth Financial LP153$13.0K0.00%+153New
Meeder Asset Management Inc180$15.0K0.00%00.0%Unchanged
Smithfield Trust Co170$15.0K0.00%00.0%Unchanged
Plante Moran Financial Advisors, LLC190$16.0K0.00%−240−55.8%Reduced
Lindbrook Capital, LLC190$16.0K0.00%−20−9.5%Reduced
TCI Wealth Advisors, Inc.182$16.0K0.00%+2+1.1%Added
Towarzystwo Funduszy Inwestycyjnych Pzu SA200$17.2K0.02%00.0%Unchanged
Earnest Partners LLC220$19.0K0.00%00.0%Unchanged
Migdal Insurance & Financial Holdings Ltd.237$20.0K0.00%+67+39.4%Added
Alpha Paradigm Partners, LLC233$20.0K0.01%+233New
Meridian Wealth Partners, LLC242$21.0K0.00%+242New
Stephenson National Bank & Trust260$22.0K0.01%00.0%Unchanged
JNBA Financial Advisors270$23.0K0.00%+270New
FourThought Financial, LLC280$24.0K0.00%+30+12.0%Added
Reilly Financial Advisors, LLC300$26.0K0.00%00.0%Unchanged
Assetmark, Inc303$26.0K0.00%+273+910.0%Added
Healthcare of Ontario Pension Plan Trust Fund310$27.0K0.00%−470−60.3%Reduced
Liberty Wealth Management LLC343$29.0K0.01%+283+471.7%Added
McIlrath & Eck, LLC380$33.0K0.01%00.0%Unchanged
Clearstead Advisors, LLC393$34.0K0.00%+393New
Arkadios Wealth Advisors420$36.0K0.01%00.0%Unchanged
Harbour Investments, Inc.466$40.0K0.00%−7,594−94.2%Reduced
Whittier Trust Co of Nevada Inc470$40.0K0.00%+423+900.0%Added
Dark Forest Capital Management LP471$41.0K0.01%−4,993−91.4%Reduced
Consolidated Planning Corp480$41.0K0.03%+480New
Wolverine Asset Management LLC500$43.0K0.00%−3,860−88.5%Reduced
Sugarloaf Wealth Management, LLC511$44.0K0.01%+191+59.7%Added
Jackson, Grant Investment Advisers, Inc.530$46.0K0.02%00.0%Unchanged
Creative Financial Designs Inc550$47.0K0.01%00.0%Unchanged
Spectrum Management Group, LLC616$53.0K0.01%+616New
Lenox Wealth Advisors, LLC700$60.0K0.01%00.0%Unchanged
Evoke Wealth, LLC710$61.0K0.00%00.0%Unchanged
Kelly Financial Services LLC786$67.6K0.04%−48,906−98.4%Reduced
State of Wyoming790$68.0K0.04%+790New
Huntington National Bank825$71.0K0.00%+15+1.9%Added
Harbor Investment Advisory, LLC827$71.0K0.01%+327+65.4%Added
Carolinas Wealth Consulting LLC845$73.0K0.02%+195+30.0%Added
IFP Advisors, Inc1,006$85.0K0.00%+61+6.5%Added
Bessemer Group Inc1,021$88.0K0.00%+391+62.1%Added
Ancora Advisors, LLC1,040$90.0K0.00%−530−33.8%Reduced
Koshinski Asset Management, Inc.1,072$92.3K0.01%+1,072New
Carroll Financial Associates, Inc.1,107$95.0K0.01%+37+3.5%Added
Barrett Asset Management, LLC1,140$98.0K0.00%00.0%Unchanged
Quadrant Capital Group LLC1,286$111.0K0.02%+94+7.9%Added
Newfound Research LLC1,317$113.0K0.18%+300+29.5%Added
Tobam1,340$115.0K0.00%00.0%Unchanged
Loomis Sayles & Co L P1,500$129.0K0.00%−5,110−77.3%Reduced
Cullen/Frost Bankers, Inc.1,560$134.0K0.00%00.0%Unchanged
Berman Capital Advisors, LLC1,593$136.0K0.02%+543+51.7%Added
Delta Asset Management LLC1,760$151.0K0.01%00.0%Unchanged
Capco Asset Management, LLC1,900$164.0K0.05%00.0%Unchanged
Signaturefd, LLC1,984$171.0K0.01%+524+35.9%Added
Whittier Trust Co2,014$173.0K0.00%−266−11.7%Reduced
First Horizon Advisors, Inc.2,154$184.0K0.01%+4+0.2%Added
Parkside Financial Bank & Trust2,180$187.0K0.06%+60+2.8%Added
Lloyd Advisory Services, LLC.2,224$191.0K0.10%+994+80.8%Added
Flputnam Investment Management Co2,340$201.0K0.01%−150−6.0%Reduced