31.50 USD
↘ 0.02 (0.06%)AFTER HOURS (AS OF Mon 07:30 PM EDT)
CSGP Stock After Hours
CoStar Group Inc
CSGPNASDAQ • USD
Market: CLOSED
After-hours trading runs 4:00 PM – 8:00 PM ET.
CSGP last traded at $31.50 after hours, down $0.02 (0.06%) from its regular-session close of $31.52.
📅 CSGP is expected to report earnings around Oct 27, 2026 after the close (estimated), with an estimated EPS of $0.34. CSGP earnings details →
CSGP After Hours Chart
CSGP After Hours News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, CSGP has had 15 qualifying gap events (gaps of 5% or more at the open) — 6 gap-ups and 9 gap-downs. Gap-ups averaged +6.2%, 83% have fully filled, median time to fill 9 trading days. Gap-downs averaged -8.8%, 67% have fully filled, median time to fill 5 trading days. Most recent: a -5.3% gap down on Jul 30, 2026, which filled in 3 trading days. Average 20-trading-day return after a CSGP gap up: -5.44%. After a gap down: +9.84%.
Gap Ups6 events
Fill Rate
83.3%
Avg Gap
6.2%
Avg 50% Fill
7d
Avg Fill
9d
Gap Downs9 events
Fill Rate
66.7%
Avg Gap
8.8%
Avg 50% Fill
1d
Avg Fill
5d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 50% | 50% | 67% | 67% |
| fills 50% | 33% | 33% | 50% | 67% |
| fills 75% | 33% | 33% | 50% | 67% |
| fills 100% | 33% | 33% | 50% | 50% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 56% | 78% | 78% | 78% |
| fills 50% | 56% | 78% | 78% | 78% |
| fills 75% | 22% | 56% | 78% | 78% |
| fills 100% | 11% | 33% | 56% | 67% |
Complete Gap History — 15 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-07-30 | $29.83 | -5.25% | Filled | 1d | 3d | 83% | 100% | 100% | 100% |
| 2026-07-29 | $30.33 | -14.18% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-07-14 | $28.77 | -6.15% | Filled | 1d | 2d | 57% | 100% | 100% | 100% |
| 2026-02-25 | $49.15 | -5.21% | Open | 6d | — | 20% | 65% | 95% | 95% |
| 2026-01-27 | $65.81 | +5.27% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-10-29 | $78.23 | -7.54% | Open | — | — | 3% | 3% | 3% | 3% |
| 2025-04-07 | $72.62 | +5.34% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2024-10-23 | $76.87 | -5.77% | Filled | 2d | 11d | 12% | 72% | 100% | 100% |
| 2024-04-24 | $84.62 | +9.35% | Filled | 14d | 24d | 47% | 47% | 47% | 83% |
| 2023-10-25 | $74.17 | -8.32% | Filled | 1d | 7d | 53% | 100% | 100% | 100% |
| 2023-07-26 | $91.80 | -5.41% | Open | — | — | 15% | 15% | 15% | 15% |
| 2022-10-26 | $74.50 | +5.73% | Filled | 39d | 50d | 24% | 24% | 24% | 24% |
| 2022-09-06 | $70.89 | +5.80% | Filled | 7d | 9d | 8% | 8% | 100% | 100% |
| 2022-07-27 | $60.70 | +5.44% | Open | — | — | 5% | 5% | 5% | 5% |
| 2022-02-23 | $62.94 | -21.48% | Filled | 1d | 18d | 73% | 94% | 94% | 100% |
Frequently Asked Questions
What is CSGP's after-hours price?
CoStar (CSGP) is trading at $31.50 after hours, down $0.02 (0.06%) from its regular-session close of $31.52.
Why is CSGP moving after hours?
CSGP is down 0.06% in after-hours trading. Moves in this session almost always follow something released after the 4:00 PM ET close — an earnings report, guidance, a filing, or news — and trade on far thinner volume than the regular session, so the size of the move can overstate what the market will settle on at the next open.
When does CSGP after-hours trading start and end?
After-hours trading in CSGP on the NASDAQ runs from 4:00 PM to 8:00 PM ET on trading days, immediately after the regular session closes. Not every broker offers the full window, and liquidity thins sharply after about 6:30 PM ET.
Will CSGP's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and CSGP's gap history is the best guide to what happens next: 83% of CSGP gap-ups have fully filled, and 67% of gap-downs have filled over the past 5 years. Fill rates this high mean a large after-hours move is more often faded than extended.
When does CSGP report earnings?
CSGP is expected to report earnings around Oct 27, 2026 after the close (estimated), with an estimated EPS of $0.34. Earnings are the most common cause of a large after-hours move, since most companies report after the close.