CSGP NASDAQ
CoStar Group, Inc.
1W: +6.5%
1M: -12.5%
3M: -32.0%
YTD: -48.4%
1Y: -55.6%
3Y: -55.3%
5Y: -58.7%
$33.95
+0.02 (+0.06%)
Weekly Expected Move ±5.5%
$29
$31
$33
$34
$36
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🏦 Institutional Activity
Latest: Q1 2026963
Institutions Holding
-46 vs prior
104.1%
Ownership
-89.61%
111
New
271
Increased
489
Reduced
241
Closed
👔 Insider Trades
25 records| Date | Name | Title | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-01 | FLORANCE ANDREW C | officer: president and ceo | P-Purchase | 3,100 | $35.82 | $111K | Filing |
| 2026-05-01 | FLORANCE ANDREW C | officer: president and ceo | P-Purchase | 68,330 | $35.17 | $2.4M | Filing |
| 2026-03-15 | Boxer Gene | officer: general counsel and secretary | F-Tax Withholding | 482 | $43.63 | $21K | Filing |
| 2026-03-15 | Cann Cynthia Cammett | officer: chief accounting officer | F-Tax Withholding | 1,194 | $43.63 | $52K | Filing |
| 2026-03-15 | DESMARAIS MICHAEL J | officer: chief human resources officer | F-Tax Withholding | 2,873 | $43.63 | $125K | Filing |
| 2026-03-15 | SIMURO FRANK | officer: chief technology officer | F-Tax Withholding | 11,107 | $43.63 | $485K | Filing |
| 2026-03-15 | Boxer Gene | officer: general counsel and secretary | F-Tax Withholding | 428 | $43.63 | $19K | Filing |
| 2026-03-15 | Ruggles Lisa | officer: senior vp, global operations | F-Tax Withholding | 2,977 | $43.63 | $130K | Filing |
| 2026-03-02 | SAINT FREDERICK G. | officer: president, marketplaces | P-Purchase | 20,000 | $45.33 | $907K | Filing |
| 2026-03-02 | Glaser Rachel C | director | P-Purchase | 1,000 | $44.94 | $45K | Filing |
| 2026-03-01 | Cann Cynthia Cammett | officer: chief accounting officer | F-Tax Withholding | 1,385 | $44.63 | $62K | Filing |
| 2026-03-01 | SAINT FREDERICK G. | officer: president, marketplaces | F-Tax Withholding | 11,096 | $44.63 | $495K | Filing |
| 2026-03-01 | LOWN CHRISTIAN M. | officer: chief financial officer | F-Tax Withholding | 7,175 | $44.63 | $320K | Filing |
| 2026-03-01 | Ruggles Lisa | officer: senior vp, global operations | F-Tax Withholding | 8,931 | $44.63 | $399K | Filing |
| 2026-03-01 | DESMARAIS MICHAEL J | officer: chief human resources officer | F-Tax Withholding | 6,353 | $44.63 | $284K | Filing |
| 2026-03-01 | SIMURO FRANK | officer: chief technology officer | F-Tax Withholding | 18,702 | $44.63 | $835K | Filing |
| 2026-03-01 | FLORANCE ANDREW C | officer: president and ceo | F-Tax Withholding | 59,593 | $44.63 | $2.7M | Filing |
| 2026-03-01 | Boxer Gene | officer: general counsel and secretary | F-Tax Withholding | 4,547 | $44.63 | $203K | Filing |
| 2026-02-27 | FLORANCE ANDREW C | officer: president and ceo | P-Purchase | 55,720 | $44.52 | $2.5M | Filing |
| 2026-02-19 | SAINT FREDERICK G. | officer: president, marketplaces | F-Tax Withholding | 2,149 | $49.07 | $105K | Filing |
| 2026-02-19 | SIMURO FRANK | officer: chief technology officer | F-Tax Withholding | 4,421 | $49.07 | $217K | Filing |
| 2026-02-19 | SIMURO FRANK | officer: chief technology officer | D-Sale to Issuer | 30,727 | $— | $0 | Filing |
| 2026-02-19 | Ruggles Lisa | officer: senior vp, global operations | F-Tax Withholding | 3,219 | $49.07 | $158K | Filing |
| 2026-02-19 | Ruggles Lisa | officer: senior vp, global operations | D-Sale to Issuer | 17,583 | $— | $0 | Filing |
| 2026-02-19 | FLORANCE ANDREW C | officer: president and ceo | F-Tax Withholding | 19,221 | $49.07 | $943K | Filing |
🏛️ Congressional Trades
25 records| Date | Politician | Chamber | Type | Amount | Filing |
|---|---|---|---|---|---|
| 2026-04-14 | Gilbert Cisneros | House | Sell | $1,001 - $15,000 | Filing |
| 2026-03-13 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2026-01-28 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-12-10 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-10-15 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-09-30 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-09-25 | Lisa McClain | House | Sell | $1,001 - $15,000 | Filing |
| 2025-09-25 | Lisa McClain | House | Sell | $1,001 - $15,000 | Filing |
| 2025-09-22 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-08-13 | Lisa McClain | House | Buy | $1,001 - $15,000 | Filing |
| 2025-07-31 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-07-09 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-06-30 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-06-27 | Gilbert Cisneros | House | Buy | $15,001 - $50,000 | Filing |
| 2025-06-25 | Gilbert Cisneros | House | Buy | $1,001 - $15,000 | Filing |
| 2025-05-15 | Rob Bresnahan | House | Sell | $1,001 - $15,000 | Filing |
| 2025-05-12 | Jefferson Shreve | House | Sell | $15,001 - $50,000 | Filing |
| 2025-02-24 | Jefferson Shreve | House | Buy | $15,001 - $50,000 | Filing |
| 2025-01-21 | William R. Keating | House | Buy | $1,001 - $15,000 | Filing |
| 2025-01-15 | Julie Johnson | House | Sell | $1,001 - $15,000 | Filing |
| 2024-09-09 | Ro Khanna | House | Sell | $1,001 - $15,000 | Filing |
| 2024-02-13 | Ro Khanna | House | Buy | $1,001 - $15,000 | Filing |
| 2023-11-03 | Ro Khanna | House | Buy | $1,001 - $15,000 | Filing |
| 2023-10-31 | Ro Khanna | House | Sell | $1,001 - $15,000 | Filing |
| 2023-10-10 | Ro Khanna | House | Buy | $1,001 - $15,000 | Filing |
🏦 Top Institutional Holders
20 holders| Holder | Shares | Value | Date Reported | Filing | |
|---|---|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | 38,234,133 | $1.5B | +38,234,133 | 2026-03-31 | Filing |
| BlackRock, Inc. | 33,808,184 | $1.4B | -162,442 | 2026-03-31 | Filing |
| VANGUARD CAPITAL MANAGEMENT LLC | 27,423,903 | $1.1B | +27,423,903 | 2026-03-31 | Filing |
| STATE STREET CORP | 18,650,975 | $752M | +18,623 | 2026-03-31 | Filing |
| PRINCIPAL FINANCIAL GROUP INC | 17,696,192 | $714M | +130,118 | 2026-03-31 | Filing |
| Capital International Investors | 15,513,753 | $626M | +4,671,743 | 2026-03-31 | Filing |
| BAILLIE GIFFORD & CO | 13,610,922 | $549M | +677,737 | 2026-03-31 | Filing |
| POLEN CAPITAL MANAGEMENT LLC | 12,570,368 | $507M | +7,679,432 | 2026-03-31 | Filing |
| GEODE CAPITAL MANAGEMENT, LLC | 12,448,652 | $500M | +266,485 | 2026-03-31 | Filing |
| AKRE CAPITAL MANAGEMENT LLC | 10,348,273 | $417M | +730,468 | 2026-03-31 | Filing |
| GOLDMAN SACHS GROUP INC | 9,245,812 | $373M | +5,494,284 | 2026-03-31 | Filing |
| JANUS HENDERSON GROUP PLC | 7,724,152 | $312M | +250,772 | 2026-03-31 | Filing |
| Invesco Ltd. | 7,137,002 | $288M | +1,749,946 | 2026-03-31 | Filing |
| CADEN CAPITAL PARTNERS, LP | 4,821 | $194M | +3,306 | 2026-03-31 | Filing |
| Capital Research Global Investors | 4,373,706 | $176M | -1,193,256 | 2026-03-31 | Filing |
| BANK OF AMERICA CORP /DE | 3,568,107 | $144M | +63,295 | 2026-03-31 | Filing |
| NORTHERN TRUST CORP | 3,432,231 | $138M | -33,831 | 2026-03-31 | Filing |
| Meritage Group LP | 3,329,006 | $134M | +3,329,006 | 2026-03-31 | Filing |
| Amundi | 3,280,724 | $132M | -833,792 | 2026-03-31 | Filing |
| Legal & General Group Plc | 3,025,508 | $122M | +164,208 | 2026-03-31 | Filing |