Andrew C. Florance is CEO & President at COSTAR GROUP, INC. (CSGP). They have made 33 open-market trades across 2 companies since 2006, most recently 2026-08-04.
CIK 0001066061
5 open-market purchases totalling $9.9M since 2013, against 28 sales. Across 5 scored buys the stock is down 1.3% at thirty days, and 2.3 points behind the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| CSGP | 1,806,165 | $58.3M |
| WD | 24,019 | $784K |
| Total | $59.1M |
Shares reported on the most recent Form 4, priced at the 2026-08-05 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 40% | 60% | — |
| Avg Move | -4.5% | -1.3% | — |
| Alpha | -4.3% | -2.3% | — |
| Scored | 5 | 5 | 4 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CSGP | BUY | 2026-08-04 | 2026-08-05 | $29.89 | $2.5M | +4.4% | +2.8% | — |
| CSGP | BUY | 2026-05-01 | 2026-05-04 | $35.20 | $2.5M | -9.6% | -5.2% | -14.8% |
| CSGP | BUY | 2026-02-27 | 2026-03-02 | $44.52 | $2.5M | -5.5% | -13.7% | -26.2% |
| CSGP | BUY | 2024-10-25 | 2024-10-28 | $74.67 | $2.2M | +1.4% | +9.0% | +1.6% |
| CSGP | SELL | 2023-04-28 | 2023-05-02 | $76.77 | $55.4M | +0.5% | +6.3% | +12.0% |
| CSGP | SELL | 2021-03-10 | 2021-03-11 | $818.37 | $32.0M | +2.2% | +9.2% | +4.4% |
| CSGP | SELL | 2020-08-26 | 2020-08-28 | $849.91 | $53.0M | -7.2% | +0.3% | +3.5% |
| CSGP | SELL | 2020-03-02 | 2020-03-03 | $663.90 | $22.3M | -5.2% | -23.2% | -6.2% |
| CSGP | SELL | 2019-07-26 | 2019-07-30 | $628.64 | $30.4M | +2.2% | -1.0% | -10.0% |
| CSGP | SELL | 2019-03-04 | 2019-03-04 | $473.38 | $52.4M | -0.1% | +3.8% | +7.2% |
| CSGP | SELL | 2018-04-26 | 2018-04-30 | $371.03 | $18.4M | +7.4% | +4.0% | +13.2% |
| CSGP | SELL | 2018-02-27 | 2018-03-01 | $347.10 | $55.6M | +6.1% | +2.6% | +11.3% |
| CSGP | SELL | 2017-05-02 | 2017-05-03 | $244.46 | $21.3M | +3.4% | +6.1% | +11.4% |
| CSGP | SELL | 2017-03-02 | 2017-03-02 | $205.31 | $10.8M | +0.4% | +1.6% | +28.1% |
| CSGP | SELL | 2015-11-11 | 2015-11-12 | $205.10 | $3.6M | -11.4% | -2.9% | -22.8% |
| CSGP | SELL | 2015-03-02 | 2015-03-03 | $197.90 | $6.6M | -11.4% | -2.9% | -2.9% |
| CSGP | SELL | 2014-03-06 | 2014-03-10 | $210.04 | $10.5M | -11.4% | -2.9% | -2.9% |
| CSGP | SELL | 2013-10-28 | 2013-10-30 | $179.08 | $9.7M | -11.4% | -2.9% | -2.9% |
| CSGP | SELL | 2013-07-29 | 2013-07-31 | $156.42 | $11.3M | -11.4% | -2.9% | -2.9% |
| WD | BUY | 2013-05-20 | 2013-05-22 | $19.00 | $237K | -13.0% | +0.7% | +0.7% |
| CSGP | SELL | 2013-03-14 | 2013-03-18 | $99.89 | $5.6M | -11.4% | -2.9% | -2.9% |
| CSGP | SELL | 2013-03-04 | 2013-03-06 | $102.85 | $3.3M | -11.4% | -2.9% | -2.9% |
| CSGP | SELL | 2012-08-01 | 2012-08-02 | $80.10 | $4.5M | -11.4% | -2.9% | -2.9% |
| CSGP | SELL | 2012-05-17 | 2012-05-21 | $70.08 | $1.9M | -11.4% | -2.9% | -2.9% |
| CSGP | SELL | 2011-11-04 | 2011-11-07 | $62.93 | $1.3M | -11.4% | -2.9% | -2.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.