DaveManuel.com · Institutional Ownership · Who Owns It
COSTAR GROUP INC (CSGP)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
771
Reporting holders
$11.9B
Reported value
102.2%
Of shares outstanding
0.7%
Calls
0.3%
Puts
-35
Holder change
Institutions report 414,073,817 shares against 405,197,588 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | $1.1B | 37,914,844 | 0.05% | 2q | -0.8%-$9.0M |
| BlackRock, Inc. | $957.6M | 33,813,969 | 0.01% | 8q | HELD |
| VANGUARD CAPITAL MANAGEMENT LLC | $755.7M | 26,683,792 | 0.02% | 2q | -2.7%-$21.0M |
| BAMCO INC /NY/ | $612.5M | 21,626,763 | 0.92% | 31q | +32.6%+$150.5M |
| STATE STREET CORP | $521.4M | 18,410,876 | 0.02% | 31q | -1.3%-$6.8M |
| Capital International Investors | $471.3M | 16,643,016 | 0.10% | 18q | +7.3%+$32.0M |
| BAILLIE GIFFORD & CO | $372.5M | 13,154,165 | 0.34% | 31q | -3.4%-$12.9M |
| GEODE CAPITAL MANAGEMENT, LLC | $343.3M | 12,166,469 | 0.02% | 31q | -2.3%-$8.0M |
| AKRE CAPITAL MANAGEMENT LLC | $331.3M | 11,699,396 | 6.47% | 27q | +13.1%+$38.3M |
| POLEN CAPITAL MANAGEMENT LLC | $248.1M | 8,759,314 | 2.14% | 7q | -30.3%-$107.9M |
| AQR CAPITAL MANAGEMENT LLC | $239.2M | 8,445,474 | 0.08% | 31q | +568.8%+$203.4M |
| Jupiter Topco LLC | $221.8M | 7,832,860 | 0.09% | new | FIRST |
| Invesco Ltd. | $192.8M | 6,808,377 | 0.02% | 31q | -57.3%-$258.8M |
| EdgePoint Investment Group Inc. | $168.5M | 5,950,002 | 1.27% | new | NEW |
| NORGES BANK | $168.5M | 5,949,912 | 0.02% | 32q | -16.1%-$32.3M |
| MORGAN STANLEY | $155.4M | 5,485,870 | 0.01% | 35q | +1.4%+$2.1M |
| Meritage Group LP | $152.8M | 5,394,164 | 5.89% | 2q | +62.0%+$58.5M |
| JPMORGAN CHASE & CO | $146.7M incl. $1.3M options CALL | 4,939,994 | 0.01% | 31q | +167.1%+$91.8M |
| GOLDMAN SACHS GROUP INC | $145.3M | 5,129,484 | 0.01% | 31q | -44.5%-$116.6M |
| FEDERATED HERMES, INC. | $125.4M | 4,426,727 | 0.18% | 31q | +241.1%+$88.6M |
| Capital Research Global Investors | $118.8M | 4,193,733 | 0.02% | 15q | -4.1%-$5.1M |
| PRINCIPAL FINANCIAL GROUP INC | $107.4M | 3,790,794 | 0.05% | 31q | -78.6%-$393.8M |
| NORTHERN TRUST CORP | $97.7M | 3,448,839 | 0.01% | 31q | HELD |
| Qube Research & Technologies Ltd | $91.1M | 3,218,369 | 0.08% | new | NEW |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $88.9M | 3,136,727 | 0.09% | 31q | +17.2%+$13.1M |
| Amundi | $88.8M | 3,135,933 | 0.02% | 21q | -4.4%-$4.1M |
| VAN ECK ASSOCIATES CORP | $87.2M | 3,078,903 | 0.05% | 9q | -11.5%-$11.3M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $84.5M | 2,983,969 | 0.03% | 31q | +212.1%+$57.4M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $83.9M | 2,962,442 | 0.01% | 31q | +3.1%+$2.5M |
| BANK OF AMERICA CORP /DE/ | $77.5M | 2,735,102 | 0.00% | 31q | -23.3%-$23.6M |
| Spyglass Capital Management LLC | $76.3M | 2,694,697 | 4.13% | 11q | +142.5%+$44.8M |
| JANE STREET GROUP, LLC | $73.2M incl. $11.9M options CALL+PUT | 2,162,322 | 0.01% | 25q | +98.8%+$36.4M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $71.4M | 2,521,571 | 0.01% | 31q | +4.0%+$2.7M |
| CANADA PENSION PLAN INVESTMENT BOARD | $70.3M | 2,481,641 | 0.04% | 31q | +23.4%+$13.3M |
| FMR LLC | $70.1M | 2,474,902 | 0.00% | 31q | -12.6%-$10.1M |
| UBS Group AG | $68.1M incl. $2.2M options CALL+PUT | 2,328,376 | 0.01% | 31q | +75.6%+$29.3M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $68.1M | 2,403,003 | 0.10% | 3q | +3.0%+$2.0M |
| Ensign Peak Advisors, Inc | $67.2M | 2,373,407 | 0.11% | 27q | -13.2%-$10.2M |
| VANGUARD FIDUCIARY TRUST CO | $65.1M | 2,297,974 | 0.01% | 2q | -3.9%-$2.6M |
| DEUTSCHE BANK AG\ | $64.1M | 2,264,379 | 0.02% | 34q | +19.2%+$10.3M |
| BANK OF MONTREAL /CAN/ | $63.4M incl. $858.1K options CALL+PUT | 2,209,141 | 0.02% | 31q | -11.2%-$8.0M |
| BECK MACK & OLIVER LLC | $59.0M | 2,084,233 | 1.15% | 18q | -28.8%-$23.9M |
| Bank of New York Mellon Corp | $56.8M | 2,005,395 | 0.01% | 31q | -16.5%-$11.2M |
| Erste Asset Management GmbH | $49.8M | 1,700,000 | 0.39% | 31q | +277.8%+$36.6M |
| THOMPSON SIEGEL & WALMSLEY LLC | $49.4M | 1,744,040 | 0.89% | 2q | +183.5%+$32.0M |
| Legal & General Group Plc | $47.7M | 1,682,774 | 0.01% | 31q | -44.4%-$38.0M |
| BNP PARIBAS FINANCIAL MARKETS | $44.7M | 1,578,322 | 0.02% | 31q | +105.3%+$22.9M |
| HSBC HOLDINGS PLC | $44.6M incl. $14.2K options CALL | 1,570,774 | 0.02% | 31q | +16.6%+$6.4M |
| Fiera Capital Corp | $44.4M | 1,566,845 | 0.16% | 14q | +225.3%+$30.7M |
| Squarepoint Ops LLC | $44.3M incl. $3.5M options CALL+PUT | 1,442,049 | 0.05% | 15q | +84.3%+$20.3M |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $43.7M | 1,543,483 | 0.19% | 2q | +16.1%+$6.0M |
| ENVESTNET ASSET MANAGEMENT INC | $43.5M | 1,535,584 | 0.01% | 31q | -14.8%-$7.6M |
| DIMENSIONAL FUND ADVISORS LP | $42.9M | 1,515,376 | 0.01% | 31q | -36.9%-$25.1M |
| Pictet Asset Management Holding SA | $41.7M | 1,470,824 | 0.04% | 12q | +7.2%+$2.8M |
| ROYAL BANK OF CANADA | $41.5M | 1,467,115 | 0.01% | 31q | +2.2%+$888.7K |
| MARSHALL WACE, LLP | $39.1M | 1,381,204 | 0.03% | 5q | +167.0%+$24.5M |
| Nuveen, LLC | $37.5M | 1,325,564 | 0.01% | 6q | -31.3%-$17.1M |
| DF DENT & CO INC | $37.4M | 1,319,009 | 0.71% | 31q | -17.8%-$8.1M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $36.8M | 1,299,558 | 0.02% | 2q | +3076.5%+$35.6M |
| WELLS FARGO & COMPANY/MN | $35.5M | 1,253,821 | 0.01% | 31q | -10.6%-$4.2M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $35.2M incl. $23.7M options CALL+PUT | 405,498 | 0.00% | 31q | +59.4%+$13.1M |
| CITADEL ADVISORS LLC | $35.1M incl. $14.0M options CALL+PUT | 741,898 | 0.00% | 31q | -31.8%-$16.4M |
| TWO SIGMA INVESTMENTS, LP | $34.0M incl. $2.7M options CALL+PUT | 1,104,950 | 0.02% | 5q | +264.7%+$24.7M |
| Swiss National Bank | $33.5M | 1,183,765 | 0.02% | 31q | -4.8%-$1.7M |
| Connor, Clark & Lunn Investment Management Ltd. | $33.1M | 1,169,688 | 0.06% | 2q | +986.3%+$30.1M |
| Douglas Lane & Associates, LLC | $33.1M | 1,168,859 | 0.45% | 7q | +45.4%+$10.3M |
| RIVERBRIDGE PARTNERS LLC | $30.9M | 1,091,535 | 0.86% | 31q | -11.1%-$3.8M |
| D. E. Shaw & Co., Inc. | $29.5M | 1,043,332 | 0.01% | 31q | -82.3%-$137.8M |
| Mitsubishi UFJ Asset Management Co., Ltd. | $28.8M | 1,015,380 | 0.02% | 31q | -3.5%-$1.0M |
| CAPITAL FUND MANAGEMENT S.A. | $28.3M incl. $2.7M options CALL+PUT | 902,723 | 0.12% | 4q | +1847.5%+$26.8M |
| CITIGROUP INC | $27.2M incl. $2.0M options CALL | 889,581 | 0.01% | 31q | -6.7%-$2.0M |
| Focus Partners Wealth | $26.5M | 936,775 | 0.03% | 7q | +1.6%+$415.1K |
| Sumitomo Mitsui Trust Group, Inc. | $26.2M | 925,120 | 0.01% | 31q | -3.0%-$820.0K |
| Man Group plc | $26.1M | 921,094 | 0.04% | 13q | +1323.0%+$24.3M |
| Vanguard Global Advisers, LLC | $24.9M | 881,001 | 0.01% | 2q | -5.1%-$1.3M |
| MILLENNIUM MANAGEMENT LLC | $24.7M incl. $3.5M options CALL+PUT | 746,995 | 0.01% | 15q | +504.4%+$20.6M |
| PRIMECAP MANAGEMENT CO/CA/ | $23.3M | 821,600 | 0.01% | 6q | +2.2%+$509.8K |
| RHUMBLINE ADVISERS | $22.4M | 790,116 | 0.02% | 31q | HELD |
| VANGUARD ASSET MANAGEMENT, Ltd | $21.9M | 772,828 | 0.01% | 2q | +7.7%+$1.6M |
| Russell Investments Group, Ltd. | $21.6M | 762,930 | 0.02% | 31q | +118.1%+$11.7M |
| TUDOR INVESTMENT CORP ET AL | $21.5M incl. $3.7M options CALL+PUT | 627,490 | 0.03% | 9q | +250.0%+$15.4M |
| BARCLAYS PLC | $21.5M | 758,649 | 0.00% | 31q | -38.4%-$13.4M |
| Petrus Trust Company, LTA | $21.4M | 756,200 | 2.01% | 6q | HELD |
| Trexquant Investment LP | $21.0M | 740,241 | 0.12% | 2q | +913.1%+$18.9M |
| AMERICAN CAPITAL MANAGEMENT INC | $20.5M | 725,143 | 0.92% | 31q | -12.1%-$2.8M |
| Korea Investment CORP | $19.8M | 698,417 | 0.04% | 31q | +279.8%+$14.6M |
| PEREGRINE CAPITAL MANAGEMENT LLC | $19.6M | 692,753 | 0.64% | 31q | -0.9%-$181.2K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $19.4M | 686,023 | 0.00% | 31q | -54.8%-$23.6M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $19.3M | 680,684 | 0.02% | 31q | +2.0%+$384.4K |
| BLAIR WILLIAM & CO/IL | $18.6M | 658,159 | 0.05% | 31q | -26.9%-$6.9M |
| ALLIANCEBERNSTEIN L.P. | $18.5M | 458,488 | 0.01% | 31q | +12.5%+$2.1M |
| Gotham Asset Management, LLC | $18.0M | 635,988 | 0.04% | 5q | +42.3%+$5.4M |
| Mitsubishi UFJ Trust & Banking Corp | $16.9M | 596,676 | 0.04% | 31q | +40.9%+$4.9M |
| Quantinno Capital Management LP | $16.4M | 577,996 | 0.02% | 17q | +69.9%+$6.7M |
| LANDMARK INVESTMENT PARTNERS, L.P. | $15.7M incl. $11.3M options CALL | 144,011 | 3.93% | 2q | +20.0%+$2.6M |
| Chicago Capital, LLC | $14.9M | 526,958 | 0.36% | 31q | -50.1%-$15.0M |
| United Asset Strategies, Inc. | $13.8M | 489,008 | 0.98% | new | NEW |
| NEW YORK STATE COMMON RETIREMENT FUND | $13.8M | 487,676 | 0.02% | 31q | +137.5%+$8.0M |
| California Public Employees Retirement System | $13.5M | 478,042 | 0.01% | 31q | -10.3%-$1.5M |
| NZS Capital, LLC | $13.5M | 475,551 | 0.35% | 19q | -33.0%-$6.6M |
Showing the largest 100 of 771 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-27 | 2026-10-27 | Material agreement entered | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-04 | FLORANCE ANDREW C | Founder and CEO | Bought | 83,300 | $2.5M |
| 2026-08-07 | Cann Cynthia Cammett | Chief Accounting Officer | Sold | 4,788 | $147.4K |
| 2026-08-05 | Hill John W | Director | Sold | 3,500 | $105.7K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 184 | $214.7M | 7,839,934 | 29 | 58 | 66 | 0.3% |
| Q2 2026 | 771 | $11.9B | 414,073,817 | 111 | 299 | 266 | 1.0% |
| Q1 2026 | 806 | $17.0B | 415,946,571 | 119 | 305 | 266 | 1.1% |
| Q4 2025 | 867 | $29.0B | 426,195,691 | 64 | 260 | 378 | 1.1% |
| Q3 2025 | 918 | $35.4B | 415,952,159 | 99 | 347 | 279 | 0.9% |
| Q2 2025 | 891 | $34.6B | 426,126,909 | 93 | 336 | 307 | 0.8% |
| Q1 2025 | 869 | $34.5B | 429,980,450 | 132 | 361 | 252 | 1.3% |
| Q4 2024 | 816 | $29.5B | 410,124,363 | 106 | 280 | 262 | 0.6% |
| Q3 2024 | 782 | $30.4B | 399,995,392 | 85 | 287 | 271 | 0.6% |
| Q2 2024 | 773 | $29.6B | 396,662,231 | 95 | 252 | 266 | 0.5% |
| Q1 2024 | 775 | $40.3B | 415,538,345 | 87 | 276 | 251 | 0.5% |
| Q4 2023 | 744 | $34.8B | 397,131,402 | 70 | 266 | 248 | 0.4% |
| Q3 2023 | 694 | $30.3B | 392,208,923 | 57 | 260 | 227 | 0.4% |
| Q2 2023 | 722 | $35.8B | 400,557,479 | 88 | 245 | 239 | 0.5% |
| Q1 2023 | 694 | $27.1B | 392,317,603 | 76 | 232 | 244 | 0.2% |
| Q4 2022 | 707 | $30.6B | 394,642,504 | 104 | 238 | 230 | 0.5% |
| Q3 2022 | 623 | $53.4B | 754,845,862 | 103 | 214 | 182 | 1.5% |
| Q2 2022 | 583 | $43.0B | 709,719,765 | 76 | 195 | 196 | 0.2% |
| Q1 2022 | 579 | $49.8B | 746,584,047 | 62 | 234 | 187 | 0.2% |
| Q4 2021 | 619 | $114.4B | 1,344,481,779 | 72 | 204 | 192 | 7.0% |
| Q3 2021 | 590 | $105.4B | 1,122,717,464 | 61 | 214 | 180 | 8.3% |
| Q2 2021 | 601 | $56.9B | 685,011,962 | 76 | 227 | 172 | 0.4% |
| Q1 2021 | 589 | $51.7B | 62,599,309 | 65 | 218 | 193 | 0.4% |
| Q4 2020 | 607 | $51.8B | 55,764,908 | 60 | 231 | 181 | 0.4% |
| Q3 2020 | 573 | $48.4B | 56,809,684 | 81 | 185 | 197 | 0.4% |
| Q2 2020 | 544 | $54.4B | 76,191,956 | 83 | 202 | 173 | 0.5% |
| Q1 2020 | 499 | $28.1B | 47,507,216 | 59 | 172 | 195 | 0.6% |
| Q4 2019 | 484 | $30.7B | 51,090,628 | 48 | 163 | 170 | 0.5% |
| Q3 2019 | 478 | $30.4B | 51,159,319 | 72 | 151 | 179 | 0.1% |
| Q2 2019 | 441 | $30.7B | 55,391,289 | 66 | 173 | 136 | 0.2% |
| Q1 2019 | 432 | $25.2B | 53,966,851 | 81 | 136 | 138 | 0.1% |
| Q4 2018 | 381 | $18.0B | 53,252,564 | 4 | 9 | 6 | 0.2% |