CSGP — COSTAR GROUP, INC.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
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Measured signals that fired on CSGP
| date | signal | measured base rate |
|---|---|---|
| 2026-07-16 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-10 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-06-18 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-06-18 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-05-14 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-04-16 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-07 | Cann Cynthia Cammett Chief Accounting Officer | Open-market sale | 4.8K | 30.78 | 147.4K |
| 2026-08-05 | Hill John W Director | Open-market sale | 3.5K | 30.21 | 105.7K |
| 2026-08-04 | FLORANCE ANDREW C Founder and CEO | Open-market purchase | 83.3K | 29.89 | 2.5M |
| 2026-08-01 | SAINT FREDERICK G. President, Marketplaces | Shares withheld for tax | 1.4K | 28.76 | 41.3K |
| 2026-08-01 | Cann Cynthia Cammett Chief Accounting Officer | Shares withheld for tax | 1.1K | 28.76 | 31.0K |
| 2026-07-01 | LOWN CHRISTIAN M. Chief Financial Officer | Shares withheld for tax | 5.6K | 29.36 | 164.3K |
| 2026-06-23 | Musslewhite Robert W Director | Grant or award | 8.3K | 0.00 | 0 |
| 2026-06-23 | Hill John W Director | Grant or award | 8.3K | 0.00 | 0 |
| 2026-06-23 | Brunner Angelique G. Director | Grant or award | 8.3K | 0.00 | 0 |
| 2026-06-23 | BERISFORD JOHN L Director | Grant or award | 8.3K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.5B | 38.2M |
| BlackRock, Inc. | 1.4B | 33.8M |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.1B | 27.4M |
| STATE STREET CORP | 752.4M | 18.7M |
| PRINCIPAL FINANCIAL GROUP INC | 713.9M | 17.7M |
| BAMCO INC /NY/ | 658.1M | 16.3M |
| Capital International Investors | 625.8M | 15.5M |
| BAILLIE GIFFORD & CO | 549.1M | 13.6M |
| POLEN CAPITAL MANAGEMENT LLC | 507.1M | 12.6M |
| GEODE CAPITAL MANAGEMENT, LLC | 500.4M | 12.4M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| SCHEDULE 13G | 2026-08-14 | — | on EDGAR ↗ |
| 4 | 2026-08-10 | 2026-08-07 | on EDGAR ↗ |
| 4 | 2026-08-10 | 2026-08-05 | on EDGAR ↗ |
| 144 | 2026-08-05 | — | on EDGAR ↗ |
| 4 | 2026-08-05 | 2026-08-04 | on EDGAR ↗ |
| 4 | 2026-08-04 | 2026-07-31 | on EDGAR ↗ |
| 4 | 2026-08-04 | 2026-07-31 | on EDGAR ↗ |
| 4 | 2026-08-04 | 2026-08-01 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Costar Group, Inc. (CSGP) filed form 8-K · 2026-08-21 · SEC EDGAR
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