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 2026
Institutional positions in Costar Group, Inc. as of Mar 31, 2026. 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
- 797
- −34 vs. Q4 2025
- Shares held
- 415.9M
- +73.3M (+21.4%) vs. Q4 2025
- Total value
- $16.8B
- −$6.24B (−27.1%) vs. Q4 2025
- New holders
- 130
- 308 more added
- Sold out
- 164
- 276 more reduced
16 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sentinus, LLC | 8,441 | $340.5K | 0.03% | +8,441 | New |
| Buckingham Strategic Partners | 8,346 | $336.7K | 0.00% | +8,346 | New |
| Integrated Wealth Concepts LLC | 8,283 | $334.1K | 0.00% | +4,674+129.5% | Added |
| Empirical Finance, LLC | 8,225 | $331.8K | 0.02% | 00.0% | Unchanged |
| Chicago Trust Co NA | 8,140 | $328.4K | 0.05% | −4,859−37.4% | Reduced |
| Aaron Wealth Advisors | 8,130 | $328.0K | 0.02% | +655+8.8% | Added |
| Bayesian Capital Management, LP | 8,100 | $326.8K | 0.40% | +8,100 | New |
| Pitcairn Wealth Advisors LLC | 4,853 | $326.3K | 0.03% | +243+5.3% | Added |
| Castleview Partners, LLC | 8,012 | $323.2K | 0.17% | +8,012 | New |
| Conestoga Capital Advisors, LLC | 7,859 | $317.0K | 0.01% | −4,418−36.0% | Reduced |
| Trust Point Inc. | 7,810 | $315.1K | 0.03% | +733+10.4% | Added |
| Commerzbank Aktiengesellschaft | 7,761 | $313.0K | 0.01% | +7,761 | New |
| Natixis | 7,637 | $308.1K | 0.00% | −12,901−62.8% | Reduced |
| Tema ETFs LLC | 7,536 | $304.0K | 0.02% | +1,351+21.8% | Added |
| ORG Wealth Partners, LLC | 7,497 | $302.4K | 0.06% | +5,273+237.1% | Added |
| Sowell Financial Services LLC | 7,497 | $302.4K | 0.01% | −2,218−22.8% | Reduced |
| Stansberry Asset Management, LLC | 7,463 | $301.1K | 0.03% | −539−6.7% | Reduced |
| Brown Brothers Harriman & Co | 7,438 | $300.0K | 0.00% | +6,390+609.7% | Added |
| Pallas Capital Advisors LLC | 7,437 | $300.0K | 0.01% | +7,437 | New |
| Pensionmark Financial Group, LLC | 7,321 | $295.3K | 0.00% | +3,930+115.9% | Added |
| Huntington National Bank | 7,314 | $295.0K | 0.00% | +2,059+39.2% | Added |
| RSM US Wealth Management LLC | 7,279 | $293.6K | 0.00% | −2,539−25.9% | Reduced |
| Ramiah Investment Group | 7,217 | $291.1K | 0.25% | +1,755+32.1% | Added |
| Jump Financial, LLC | 7,141 | $288.1K | 0.00% | +7,141 | New |
| Motley Fool Asset Management LLC | 7,088 | $285.9K | 0.01% | −33,255−82.4% | Reduced |
| Blueshift Asset Management, LLC | 6,985 | $281.8K | 0.09% | +6,985 | New |
| Snowden Capital Advisors LLC | 6,942 | $280.0K | 0.01% | −519−7.0% | Reduced |
| Wheels Up Wealth, Inc. | 6,940 | $280.0K | 0.26% | 00.0% | Unchanged |
| IMC-Chicago, LLC | 6,637 | $267.7K | 0.00% | +6,637 | New |
| TCW Group Inc | 6,583 | $265.6K | 0.00% | +318+5.1% | Added |
| Coldstream Capital Management Inc | 6,541 | $263.9K | 0.00% | +1,778+37.3% | Added |
| Sig Brokerage, LP | 6,424 | $259.1K | 0.07% | +6,424 | New |
| Savvy Advisors, Inc. | 6,404 | $258.3K | 0.01% | +6,404 | New |
| B.O.S.S. Retirement Advisors, LLC | 6,360 | $256.6K | 0.08% | −1,714−21.2% | Reduced |
| Icon Wealth Advisors, LLC | 7,513 | $256.5K | 0.02% | −9,986−57.1% | Reduced |
| Balyasny Asset Management LLC | 6,326 | $255.2K | 0.00% | −17−0.3% | Reduced |
| Teacher Retirement System of Texas | 6,304 | $254.3K | 0.00% | −7,696−55.0% | Reduced |
| CIBC World Markets Inc. | 6,299 | $254.1K | 0.00% | +6,299 | New |
| Vontobel Holding Ltd. | 6,290 | $253.7K | 0.00% | +2,291+57.3% | Added |
| Baron Wealth Management LLC | 6,277 | $253.2K | 0.08% | −865−12.1% | Reduced |
| V-Square Quantitative Management LLC | 6,205 | $250.3K | 0.03% | +1,135+22.4% | Added |
| Blue Sparrow, LLC | 6,160 | $248.5K | 0.00% | +6,160 | New |
| Integrated Advisors Network LLC | 6,140 | $247.7K | 0.01% | +6,140 | New |
| Skopos Labs, Inc. | 6,128 | $247.2K | 0.01% | +6,128 | New |
| Davidson Kahn Capital Management, LLC | 6,156 | $246.7K | 0.13% | −36,675−85.6% | Reduced |
| Perigon Wealth Management, LLC | 6,097 | $246.0K | 0.00% | +697+12.9% | Added |
| Baker Tilly Wealth Management, LLC | 6,075 | $245.1K | 0.06% | −1,401−18.7% | Reduced |
| Rockefeller Capital Management L.P. | 6,071 | $244.9K | 0.00% | +242+4.2% | Added |
| Prestige Wealth Management Group LLC | 6,026 | $243.1K | 0.05% | +5,967+10,113.6% | Added |
| Bridges Investment Management Inc | 6,000 | $242.0K | 0.00% | +3,000+100.0% | Added |
| GTS Securities LLC | 5,986 | $241.5K | 0.01% | +102+1.7% | Added |
| Riverview Capital Advisers, LLC | 5,972 | $240.9K | 0.08% | +2,909+95.0% | Added |
| Evolve Private Wealth, LLC | 5,965 | $240.6K | 0.01% | +5,965 | New |
| Siemens Fonds Invest GmbH | 5,942 | $239.7K | 0.01% | 00.0% | Unchanged |
| Hengehold Capital Management LLC | 5,932 | $239.3K | 0.02% | −828−12.2% | Reduced |
| Penserra Capital Management LLC | 5,887 | $236.0K | 0.00% | +137+2.4% | Added |
| Syon Capital LLC | 5,800 | $234.0K | 0.01% | +640+12.4% | Added |
| Fidelis Capital Partners, LLC | 5,770 | $232.8K | 0.02% | +717+14.2% | Added |
| Nomura Holdings Inc | 5,722 | $230.8K | 0.00% | −1,228,395−99.5% | Reduced |
| Groupama Asset Managment | 5,705 | $230.1K | 0.00% | −4,186−42.3% | Reduced |
| Fifth Third Wealth Advisors LLC | 5,638 | $227.4K | 0.01% | +5,638 | New |
| Sapient Capital LLC | 5,531 | $223.1K | 0.00% | −3,498−38.7% | Reduced |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 5,499 | $221.8K | 0.01% | −6,499−54.2% | Reduced |
| Marks Group Wealth Management, Inc | 5,465 | $220.5K | 0.02% | −722−11.7% | Reduced |
| Fox Run Management, L.L.C. | 5,348 | $218.6K | 0.04% | +5,348 | New |
| Alpha Family Trust | 5,410 | $218.2K | 0.11% | +5,410 | New |
| Meeder Asset Management Inc | 5,392 | $217.5K | 0.01% | +5,392 | New |
| Integrated Investment Consultants, LLC | 5,245 | $211.6K | 0.04% | −55−1.0% | Reduced |
| Pembroke Management, LTD | 5,241 | $211.4K | 0.03% | −633−10.8% | Reduced |
| AlphaGrep UK Ltd | 5,211 | $210.2K | 0.06% | +5,211 | New |
| Wallace Advisory Group, LLC | 5,191 | $209.4K | 0.22% | +5,191 | New |
| Mirabella Financial Services LLP | 5,077 | $204.8K | 0.02% | +1,756+52.9% | Added |
| Checchi Capital Advisers, LLC | 5,061 | $204.2K | 0.01% | +943+22.9% | Added |
| Caden Capital Partners, LP | 4,821 | $194.5K | 2.40% | +3,306+218.2% | Added |
| Emerald Advisers, LLC | 4,808 | $194.0K | 0.01% | 00.0% | Unchanged |
| Hantz Financial Services, Inc. | 4,784 | $193.0K | 0.00% | −65,661−93.2% | Reduced |
| Ostrum Asset Management | 4,771 | $192.5K | 0.01% | +70+1.5% | Added |
| Leonteq Securities AG | 4,743 | $191.3K | 0.01% | +1,038+28.0% | Added |
| Harbor Investment Advisory, LLC | 4,295 | $173.3K | 0.01% | −1,880−30.4% | Reduced |
| Parkside Financial Bank & Trust | 4,256 | $171.7K | 0.01% | −304−6.7% | Reduced |
| Advisory Services Network, LLC | 4,202 | $169.5K | 0.00% | +4,202 | New |
| Canada Post Corp Registered Pension Plan | 4,170 | $168.2K | 0.01% | −10,000−70.6% | Reduced |
| MAI Capital Management | 3,973 | $160.3K | 0.00% | +1,313+49.4% | Added |
| Allworth Financial LP | 3,556 | $143.5K | 0.00% | +128+3.7% | Added |
| Smartleaf Asset Management LLC | 3,453 | $141.2K | 0.01% | −3,387−49.5% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 3,452 | $139.0K | 0.00% | −14,529−80.8% | Reduced |
| Generali Asset Management SPA SGR | 3,217 | $129.8K | 0.00% | −23,959−88.2% | Reduced |
| Quarry LP | 3,203 | $129.2K | 0.03% | +2,262+240.4% | Added |
| Signaturefd, LLC | 2,964 | $119.6K | 0.00% | −194−6.1% | Reduced |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 2,900 | $117.0K | 0.04% | +600+26.1% | Added |
| EverSource Wealth Advisors, LLC | 2,721 | $109.8K | 0.00% | +1,026+60.5% | Added |
| Archetype Wealth Partners | 2,660 | $107.0K | 0.01% | +2,660 | New |
| Farther Finance Advisors, LLC | 2,550 | $101.1K | 0.00% | +580+29.4% | Added |
| Oslo Pensjonsforsikring AS | 2,309 | $93.1K | 0.01% | +2,309 | New |
| Westpac Banking Corp | 2,306 | $93.0K | 0.01% | 00.0% | Unchanged |
| Mather Group, LLC. | 2,170 | $87.5K | 0.00% | +2,170 | New |
| Livforsakringsbolaget Skandia, Omsesidigt | 2,100 | $84.6K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 2,077 | $83.8K | 0.00% | +298+16.8% | Added |
| Clearstead Advisors, LLC | 1,963 | $79.2K | 0.00% | −158,549−98.8% | Reduced |
| Los Angeles Capital Management LLC | 1,946 | $78.5K | 0.00% | −67,417−97.2% | Reduced |