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, Q4 2025
Institutional positions in Costar Group, Inc. as of Dec 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
- 847
- −40 vs. Q3 2025
- Shares held
- 422.7M
- +11.7M (+2.8%) vs. Q3 2025
- Total value
- $28.4B
- −$6.23B (−18.0%) vs. Q3 2025
- New holders
- 103
- 273 more added
- Sold out
- 143
- 388 more reduced
18 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: 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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 760 | $11.7B |
| Q1 2026 | 797 | $16.8B |
| Q4 2025 | 847 | $28.4B |
| Q3 2025 | 905 | $34.9B |
| Q2 2025 | 873 | $34.2B |
| Q1 2025 | 858 | $33.9B |
| Q4 2024 | 805 | $28.9B |
| Q3 2024 | 773 | $30.0B |
| Q2 2024 | 767 | $29.3B |
| Q1 2024 | 767 | $38.4B |
| Q4 2023 | 737 | $34.4B |
| Q3 2023 | 690 | $30.1B |
| Q2 2023 | 714 | $35.5B |
| Q1 2023 | 692 | $26.7B |
| Q4 2022 | 704 | $30.4B |
| Q3 2022 | 634 | $28.0B |
| Q2 2022 | 591 | $23.0B |
| Q1 2022 | 589 | $25.2B |
| Q4 2021 | 633 | $29.6B |
| Q3 2021 | 594 | $32.3B |
| Q2 2021 | 607 | $31.1B |
| Q1 2021 | 593 | $31.2B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| HM Payson & Co | 92 | $6.19K | 0.00% | +42+84.0% | Added |
| MTM Investment Management, LLC | 93 | $6.25K | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 99 | $6.66K | 0.00% | −142−58.9% | Reduced |
| First United Bank Trust | 100 | $6.72K | 0.00% | 00.0% | Unchanged |
| Concord Wealth Partners | 100 | $6.72K | 0.00% | 00.0% | Unchanged |
| Orion Capital Management LLC | 100 | $6.72K | 0.00% | 00.0% | Unchanged |
| Flagship Harbor Advisors, LLC | 100 | $6.72K | 0.00% | +100 | New |
| Keating Financial Advisory Services, Inc. | 101 | $6.79K | 0.00% | +101 | New |
| Private Wealth Management Group, LLC | 101 | $6.79K | 0.00% | −90−47.1% | Reduced |
| Dogwood Wealth Management LLC | 109 | $7.33K | 0.00% | +15+16.0% | Added |
| Meramec Financial Planners, LLC | 146 | $7.34K | 0.00% | +146 | New |
| Arlington Trust Co LLC | 110 | $7.40K | 0.00% | +110 | New |
| SJS Investment Consulting Inc. | 112 | $7.53K | 0.00% | −297−72.6% | Reduced |
| TD Waterhouse Canada Inc. | 114 | $7.66K | 0.00% | +105+1,166.7% | Added |
| Elyxium Wealth, LLC | 114 | $7.67K | 0.00% | +114 | New |
| Ronald Blue Trust, Inc. | 115 | $7.73K | 0.00% | −75−39.5% | Reduced |
| JFS Wealth Advisors, LLC | 118 | $7.93K | 0.00% | +15+14.6% | Added |
| Aventura Private Wealth, LLC | 122 | $8.20K | 0.00% | 00.0% | Unchanged |
| Asset Dedication, LLC | 131 | $8.81K | 0.00% | 00.0% | Unchanged |
| Purpose Unlimited Inc. | 132 | $8.87K | 0.00% | +132 | New |
| Quent Capital, LLC | 138 | $9.28K | 0.00% | −170−55.2% | Reduced |
| Rational Advisors LLC | 139 | $9.35K | 0.00% | +7+5.3% | Added |
| UMA Financial Services, Inc. | 140 | $9.41K | 0.00% | +9+6.9% | Added |
| USA Financial Portformulas Corp | 143 | $9.62K | 0.00% | −18,614−99.2% | Reduced |
| ORG Partners LLC | 145 | $9.73K | 0.00% | −26−15.2% | Reduced |
| Quaker Wealth Management, LLC | 152 | $10.2K | 0.00% | +2+1.3% | Added |
| Private Wealth Asset Management, LLC | 161 | $10.8K | 0.00% | 00.0% | Unchanged |
| Swiss Re Ltd | 162 | $10.9K | 0.00% | +162 | New |
| CGC Financial Services, LLC | 166 | $11.2K | 0.00% | +166 | New |
| Bogart Wealth, LLC | 176 | $11.8K | 0.00% | −23−11.6% | Reduced |
| St Germain D J Co Inc | 176 | $11.8K | 0.00% | +176 | New |
| CBIZ Investment Advisory Services, LLC | 185 | $12.4K | 0.00% | +143+340.5% | Added |
| Dynamic Wealth Strategies, LLC | 204 | $13.7K | 0.01% | +4+2.0% | Added |
| Cornerstone Planning Group LLC | 211 | $13.8K | 0.00% | −62−22.7% | Reduced |
| South State Corp. | 217 | $14.6K | 0.00% | −34−13.5% | Reduced |
| Birchwood Financial Partners, Inc. | 220 | $14.8K | 0.01% | +220 | New |
| Basecamp Wealth Advisors LLC | 223 | $15.0K | 0.00% | +223 | New |
| Catalyst Capital Advisors LLC | 228 | $15.3K | 0.00% | +16+7.5% | Added |
| Cullen/Frost Bankers, Inc. | 236 | $15.9K | 0.00% | −137−36.7% | Reduced |
| Chilton Capital Management LLC | 245 | $16.5K | 0.00% | −184−42.9% | Reduced |
| McIlrath & Eck, LLC | 258 | $17.3K | 0.00% | −80−23.7% | Reduced |
| Covestor Ltd | 262 | $18.0K | 0.01% | −4−1.5% | Reduced |
| Root Financial Partners, LLC | 272 | $18.3K | 0.00% | −97−26.3% | Reduced |
| Garton & Associates Financial Advisors LLC | 274 | $18.4K | 0.01% | +274 | New |
| True Wealth Design, LLC | 278 | $18.7K | 0.01% | +226+434.6% | Added |
| Private Trust Co NA | 280 | $18.8K | 0.00% | −171−37.9% | Reduced |
| Farmers & Merchants Investments Inc | 280 | $18.8K | 0.00% | +10+3.7% | Added |
| Transamerica Financial Advisors, Inc. | 287 | $19.3K | 0.00% | +126+78.3% | Added |
| SBI Securities Co., Ltd. | 292 | $19.6K | 0.00% | −18−5.8% | Reduced |
| Montag A & Associates Inc | 300 | $20.2K | 0.00% | +300 | New |
| Winthrop Capital Management, LLC | 346 | $23.0K | 0.01% | 00.0% | Unchanged |
| Westside Investment Management, Inc. | 360 | $23.6K | 0.00% | 00.0% | Unchanged |
| WPG Advisers, LLC | 380 | $25.6K | 0.02% | −336−46.9% | Reduced |
| Reflection Asset Management | 404 | $27.2K | 0.02% | +404 | New |
| Essential Partners LLC | 414 | $27.8K | 0.01% | −218−34.5% | Reduced |
| Ancora Advisors, LLC | 419 | $28.2K | 0.00% | +14+3.5% | Added |
| Lloyd Advisory Services, LLC. | 427 | $28.7K | 0.01% | +427 | New |
| Financial Network Wealth Advisors LLC | 430 | $28.9K | 0.03% | −31−6.7% | Reduced |
| CVA Family Office, LLC | 450 | $30.3K | 0.00% | −252−35.9% | Reduced |
| Rossby Financial, LCC | 458 | $30.8K | 0.01% | −45−8.9% | Reduced |
| Annis Gardner Whiting Capital Advisors, LLC | 508 | $34.2K | 0.01% | +30+6.3% | Added |
| Close Asset Management Ltd | 520 | $35.0K | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 523 | $35.2K | 0.00% | −5,193−90.9% | Reduced |
| Park Place Capital Corp | 545 | $36.6K | 0.01% | 00.0% | Unchanged |
| Colonial Trust Co | 583 | $39.5K | 0.01% | −10−1.7% | Reduced |
| DV Equities, LLC | 590 | $39.7K | 0.01% | +590 | New |
| GW&K Investment Management, LLC | 593 | $40.0K | 0.00% | +6+1.0% | Added |
| IFP Advisors, Inc | 614 | $41.3K | 0.00% | +471+329.4% | Added |
| Stephenson National Bank & Trust | 618 | $41.6K | 0.01% | −812−56.8% | Reduced |
| Vega Investment Solutions | 629 | $42.3K | 0.01% | +629 | New |
| Twin Lakes Capital Management, LLC | 635 | $42.7K | 0.02% | 00.0% | Unchanged |
| Bryn Mawr Trust Co | 640 | $43.0K | 0.00% | −202−24.0% | Reduced |
| HFM Investment Advisors, LLC | 644 | $43.3K | 0.02% | −2−0.3% | Reduced |
| Larson Financial Group LLC | 691 | $46.5K | 0.00% | −618−47.2% | Reduced |
| Johnson Financial Group, Inc. | 720 | $48.4K | 0.00% | −739−50.7% | Reduced |
| Bank of Jackson Hole Trust | 729 | $49.0K | 0.02% | +81+12.5% | Added |
| Pin Oak Investment Advisors Inc | 1,033 | $52.0K | 0.04% | +557+117.0% | Added |
| Bank Julius Baer & Co. Ltd, Zurich | 880 | $59.2K | 0.00% | −72,030−98.8% | Reduced |
| Quarry LP | 941 | $63.3K | 0.01% | −328−25.8% | Reduced |
| Cromwell Holdings LLC | 955 | $64.2K | 0.04% | −82−7.9% | Reduced |
| Atlantic Union Bankshares Corp | 1,047 | $70.4K | 0.00% | −852−44.9% | Reduced |
| Brown Brothers Harriman & Co | 1,048 | $70.5K | 0.00% | −766−42.2% | Reduced |
| Fideuram Asset Management (Ireland) dac | 945 | $72.8K | 0.01% | +945 | New |
| Sentry Investment Management LLC | 1,082 | $73.0K | 0.05% | 00.0% | Unchanged |
| DV Trading LLC | 1,088 | $73.2K | 0.01% | +1,088 | New |
| Versant Capital Management, Inc | 1,120 | $75.3K | 0.01% | −1,588−58.6% | Reduced |
| Pinnacle Wealth Planning Services, Inc. | 1,138 | $76.5K | 0.01% | +1,138 | New |
| Onefund, LLC | 1,169 | $78.6K | 0.05% | +71+6.5% | Added |
| Eurizon SLJ Capital Ltd | 1,244 | $83.6K | 0.03% | +1,244 | New |
| Abound Wealth Management | 1,253 | $84.3K | 0.02% | −3−0.2% | Reduced |
| Clear Street Markets LLC | 1,274 | $85.7K | 0.02% | +1,137+829.9% | Added |
| HighMark Wealth Management LLC | 1,296 | $87.1K | 0.04% | 00.0% | Unchanged |
| Whittier Trust Co of Nevada Inc | 1,390 | $93.4K | 0.00% | −85−5.8% | Reduced |
| E Fund Management (Hong Kong) Co., Ltd. | 1,553 | $95.0K | 0.04% | +1,234+386.8% | Added |
| Caden Capital Partners, LP | 1,515 | $101.9K | 0.23% | −347,986−99.6% | Reduced |
| EverSource Wealth Advisors, LLC | 1,695 | $114.0K | 0.00% | −167−9.0% | Reduced |
| Dara Capital US, Inc. | 1,732 | $116.5K | 0.10% | +1,732 | New |
| Whittier Trust Co | 1,750 | $117.6K | 0.00% | 00.0% | Unchanged |
| Delta Asset Management LLC | 1,760 | $118.3K | 0.01% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 1,779 | $119.6K | 0.00% | −289−14.0% | Reduced |