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.
| 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 2025
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Erste Asset Management GmbH | 200,000 | $15.8M | 0.20% | +40,000+25.0% | Added |
| Thrivent Financial for Lutherans | 203,680 | $16.1M | 0.04% | +446+0.2% | Added |
| APG Asset Management N.V. | 220,900 | $16.2M | 0.05% | +3,400+1.6% | Added |
| Rafferty Asset Management, LLC | 207,792 | $16.5M | 0.07% | −26,050−11.1% | Reduced |
| Susquehanna International Group, LLP | 209,553 | $16.6M | 0.03% | +31,613+17.8% | Added |
| Nicholas Company, Inc. | 214,399 | $17.0M | 0.29% | −150.0% | Reduced |
| New York State Common Retirement Fund | 217,225 | $17.2M | 0.03% | −41,255−16.0% | Reduced |
| FIL Ltd | 219,375 | $17.4M | 0.02% | +21,950+11.1% | Added |
| NS Partners Ltd | 219,520 | $17.4M | 0.76% | +4,675+2.2% | Added |
| Chevy Chase Trust Holdings, Inc. | 221,229 | $17.5M | 0.06% | +3,378+1.6% | Added |
| Prudential Financial Inc | 225,441 | $17.9M | 0.03% | +5,361+2.4% | Added |
| State of Wisconsin Investment Board | 237,813 | $18.8M | 0.05% | +12,845+5.7% | Added |
| Gilder Gagnon Howe & Co LLC | 245,760 | $19.5M | 0.25% | +79,763+48.1% | Added |
| Standard Life Aberdeen plc | 248,869 | $19.6M | 0.04% | +130,277+109.9% | Added |
| Korea Investment CORP | 255,619 | $20.3M | 0.05% | −24,191−8.6% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 258,477 | $20.5M | 0.04% | −7,592−2.9% | Reduced |
| Aureus Asset Management, LLC | 260,224 | $20.6M | 1.44% | +10,688+4.3% | Added |
| Gillson Capital LP | 269,170 | $21.3M | 1.82% | +49,633+22.6% | Added |
| Ruffer LLP | 270,412 | $21.4M | 0.82% | +108,233+66.7% | Added |
| Manufacturers Life Insurance Company, The | 275,800 | $21.9M | 0.02% | +14,454+5.5% | Added |
| First Trust Advisors LP | 277,074 | $22.0M | 0.02% | −30,471−9.9% | Reduced |
| Baskin Financial Services Inc. | 279,646 | $22.2M | 1.80% | +1,821+0.7% | Added |
| Oppenheimer Asset Management Inc. | 280,752 | $22.2M | 0.28% | +8,619+3.2% | Added |
| Landmark Investment Partners, L.P. | 282,966 | $22.4M | 7.02% | +245,247+650.2% | Added |
| Ashford Capital Management Inc | 286,770 | $22.7M | 2.93% | −31,378−9.9% | Reduced |
| Tran Capital Management, L.P. | 288,760 | $22.9M | 3.08% | +288,760 | New |
| Stifel Financial Corp | 296,234 | $23.5M | 0.02% | +20,729+7.5% | Added |
| Asset Management One Co.,Ltd. | 300,684 | $23.8M | 0.08% | +12,706+4.4% | Added |
| Freestone Grove Partners LP | 306,621 | $24.3M | 0.25% | +306,621 | New |
| Susquehanna Fundamental Investments, LLC | 309,257 | $24.5M | 0.41% | +287,065+1,293.6% | Added |
| Kornitzer Capital Management Inc | 309,981 | $24.6M | 0.51% | −215−0.1% | Reduced |
| New York State Teachers Retirement System | 320,422 | $25.4M | 0.06% | −10,157−3.1% | Reduced |
| Millennium Management LLC | 325,428 | $25.8M | 0.03% | −109,022−25.1% | Reduced |
| Motley Fool Wealth Management, LLC | 330,575 | $26.2M | 1.55% | −28,864−8.0% | Reduced |
| Victory Capital Management Inc | 337,200 | $26.7M | 0.03% | −318,590−48.6% | Reduced |
| National Bank of Canada | 342,341 | $27.1M | 0.03% | +81,760+31.4% | Added |
| Granahan Investment Management Inc | 347,693 | $27.5M | 1.37% | −10,513−2.9% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 355,496 | $28.2M | 0.06% | +35,621+11.1% | Added |
| Ninety One UK Ltd | 356,947 | $28.3M | 0.08% | −35,491−9.0% | Reduced |
| Nomura Holdings Inc | 363,097 | $28.8M | 0.15% | +290,445+399.8% | Added |
| Adage Capital Partners GP, L.L.C. | 384,600 | $30.5M | 0.06% | +133,052+52.9% | Added |
| Great West Life Assurance Co | 389,913 | $31.0M | 0.05% | +1,133+0.3% | Added |
| ThornTree Capital Partners LP | 393,198 | $31.2M | 6.88% | −70,152−15.1% | Reduced |
| No Street GP LP | 395,000 | $31.3M | 2.45% | +40,000+11.3% | Added |
| NZS Capital, LLC | 396,308 | $31.4M | 1.42% | −37,192−8.6% | Reduced |
| Clearbridge Investments, LLC | 398,206 | $31.5M | 0.03% | −10,432−2.6% | Reduced |
| Geneva Capital Management LLC | 403,205 | $31.9M | 0.60% | +12,534+3.2% | Added |
| Visualize Group LP | 404,091 | $32.0M | 10.54% | +183,700+83.4% | Added |
| State Board of Administration of Florida Retirement System | 408,765 | $32.4M | 0.06% | −2,848−0.7% | Reduced |
| Royal London Asset Management Ltd | 416,974 | $33.0M | 0.08% | +14,688+3.7% | Added |
| Russell Investments Group, Ltd. | 424,796 | $33.7M | 0.05% | +112,665+36.1% | Added |
| Caden Capital Partners, LP | 437,274 | $34.6M | 10.69% | +49,411+12.7% | Added |
| Frontier Capital Management Co LLC | 439,425 | $34.8M | 0.38% | +44,809+11.4% | Added |
| Bank of Montreal | 442,916 | $35.1M | 0.02% | −101,468−18.6% | Reduced |
| LPL Financial LLC | 446,550 | $35.4M | 0.01% | +13,781+3.2% | Added |
| Ycg, LLC | 446,893 | $35.4M | 2.77% | −1,638−0.4% | Reduced |
| Ironvine Capital Partners, LLC | 457,958 | $36.3M | 3.94% | −8,753−1.9% | Reduced |
| Canada Pension Plan Investment Board | 467,135 | $37.0M | 0.04% | −662,172−58.6% | Reduced |
| Allspring Global Investments Holdings, LLC | 476,245 | $37.7M | 0.07% | −6,467−1.3% | Reduced |
| Alliancebernstein L.P. | 477,506 | $37.8M | 0.01% | +9,105+1.9% | Added |
| Arrowstreet Capital, Limited Partnership | 492,279 | $39.0M | 0.03% | +467,702+1,903.0% | Added |
| Spyglass Capital Management LLC | 495,858 | $39.3M | 2.70% | −725,749−59.4% | Reduced |
| Telemark Asset Management, LLC | 500,000 | $39.6M | 5.18% | +100,000+25.0% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 516,769 | $40.9M | 0.11% | −23,830−4.4% | Reduced |
| Quantum Capital Management, LLC | 528,206 | $41.8M | 4.33% | −9,845−1.8% | Reduced |
| National Pension Service | 537,062 | $42.6M | 0.04% | +45,316+9.2% | Added |
| Douglas Lane & Associates, LLC | 556,751 | $44.1M | 0.65% | +173,367+45.2% | Added |
| Natixis Advisors, L.P. | 594,602 | $47.1M | 0.09% | +55,589+10.3% | Added |
| ProShare Advisors LLC | 617,771 | $48.9M | 0.11% | +75,736+14.0% | Added |
| Ownership Capital B.V. | 625,788 | $49.6M | 2.27% | −412,599−39.7% | Reduced |
| California Public Employees Retirement System | 630,649 | $50.0M | 0.03% | −9,175−1.4% | Reduced |
| SEI Investments Co | 680,885 | $53.9M | 0.07% | +26,170+4.0% | Added |
| Raymond James Financial Inc | 686,911 | $54.4M | 0.02% | +44,465+6.9% | Added |
| California State Teachers Retirement System | 696,449 | $55.2M | 0.07% | +15,864+2.3% | Added |
| Citigroup Inc | 699,425 | $55.4M | 0.04% | +105,287+17.7% | Added |
| TD Asset Management Inc | 714,581 | $56.6M | 0.05% | +17,141+2.5% | Added |
| Ci Investments Inc. | 727,117 | $57.6M | 0.24% | +22,110+3.1% | Added |
| Stephens Investment Management Group LLC | 738,837 | $58.5M | 0.84% | +125,568+20.5% | Added |
| Peregrine Capital Management LLC | 739,397 | $58.6M | 1.94% | +140,742+23.5% | Added |
| TimesSquare Capital Management, LLC | 752,887 | $59.7M | 0.96% | +83,901+12.5% | Added |
| HSBC Holdings PLC | 760,291 | $60.2M | 0.04% | −135,558−15.1% | Reduced |
| Rhumbline Advisers | 768,366 | $60.9M | 0.06% | +54,747+7.7% | Added |
| Kayne Anderson Rudnick Investment Management LLC | 832,539 | $66.0M | 0.16% | −75,309−8.3% | Reduced |
| Ensign Peak Advisors, Inc | 835,209 | $66.2M | 0.13% | −53,225−6.0% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 867,557 | $68.7M | 0.06% | +104,232+13.7% | Added |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 911,600 | $72.2M | 3.84% | +21,725+2.4% | Added |
| D. E. Shaw & Co., Inc. | 916,692 | $72.6M | 0.09% | −516,038−36.0% | Reduced |
| Pictet Asset Management Holding SA | 929,105 | $73.6M | 0.08% | −105,047−10.2% | Reduced |
| American Capital Management Inc | 938,142 | $74.3M | 3.02% | +1,154+0.1% | Added |
| Chicago Capital, LLC | 943,955 | $74.8M | 2.11% | +29,016+3.2% | Added |
| Baird Financial Group, Inc. | 962,268 | $76.2M | 0.15% | −106,953−10.0% | Reduced |
| Colony Group, LLC | 983,793 | $77.9M | 0.20% | +370,652+60.5% | Added |
| Bridgewater Associates, LP | 985,993 | $78.1M | 0.36% | +106,078+12.1% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 997,010 | $79.0M | 0.06% | +44,815+4.7% | Added |
| Price T Rowe Associates Inc | 1,042,830 | $82.6M | 0.01% | −213,591−17.0% | Reduced |
| Barclays PLC | 1,043,668 | $82.7M | 0.04% | −634,464−37.8% | Reduced |
| Nuveen, LLC | 1,044,506 | $82.8M | 0.03% | +1,044,506 | New |
| Soroban Capital Partners LP | 1,050,747 | $83.3M | 1.17% | +577,835+122.2% | Added |
| Bares Capital Management, Inc. | 1,133,002 | $89.8M | 10.54% | +483,797+74.5% | Added |
| ShawSpring Partners LLC | 1,148,302 | $91.0M | 12.50% | +238,499+26.2% | Added |