25.18 USD
↗ 1.85 (7.93%)PRE MARKET (AS OF 05:29 AM EDT)
CMCSA Stock Premarket
Comcast Corp
CMCSANASDAQ • USD
Market: CLOSED
Premarket trading runs 4:00 AM – 9:30 AM ET.
CMCSA Premarket Chart
CMCSA Premarket News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, CMCSA has had 9 qualifying gap events (gaps of 5% or more at the open) — 1 gap-up and 8 gap-downs. Gap-ups averaged +7%, 100% have fully filled, median time to fill 15 trading days. Gap-downs averaged -7%, 88% have fully filled, median time to fill 14 trading days. Most recent: a -6.1% gap down on Jan 5, 2026, which filled in 18 trading days. Average 20-trading-day return after a CMCSA gap up: -4.46%. After a gap down: +4.81%.
Gap Ups1 events
Fill Rate
100.0%
Avg Gap
7.0%
Avg 50% Fill
1d
Avg Fill
15d
Gap Downs8 events
Fill Rate
87.5%
Avg Gap
7.0%
Avg 50% Fill
1d
Avg Fill
14d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 100% | 100% | 100% | 100% |
| fills 75% | 100% | 100% | 100% | 100% |
| fills 100% | 0% | 0% | 0% | 100% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 63% | 75% | 88% | 100% |
| fills 50% | 63% | 75% | 75% | 88% |
| fills 75% | 25% | 63% | 63% | 88% |
| fills 100% | 13% | 13% | 38% | 63% |
Complete Gap History — 9 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-01-05 | $29.54 | -6.13% | Filled | 1d | 18d | 66% | 88% | 88% | 100% |
| 2025-10-30 | $28.53 | -8.55% | Filled | 1d | 33d | 82% | 82% | 90% | 90% |
| 2025-04-24 | $34.47 | -7.22% | Filled | 1d | 7d | 55% | 92% | 100% | 100% |
| 2025-01-30 | $37.36 | -7.87% | Filled | 13d | 26d | 9% | 9% | 37% | 87% |
| 2024-10-31 | $42.24 | +7.02% | Filled | 1d | 15d | 80% | 97% | 97% | 100% |
| 2023-10-26 | $42.75 | -6.32% | Filled | 5d | 7d | 15% | 94% | 100% | 100% |
| 2022-12-14 | $36.71 | -5.01% | Filled | 1d | 14d | 73% | 73% | 73% | 100% |
| 2022-07-28 | $43.37 | -8.71% | Open | — | — | 19% | 19% | 19% | 27% |
| 2022-01-27 | $48.46 | -6.16% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
Frequently Asked Questions
What is CMCSA's premarket price?
Comcast (CMCSA) is trading at $25.18 in premarket, up $1.85 (+7.93%) from the previous close of $23.33.
When does CMCSA premarket trading start?
Premarket trading for CMCSA on the NASDAQ runs from 4:00 AM to 9:30 AM Eastern Time, ahead of the regular session (9:30 AM – 4:00 PM ET). After-hours runs from 4:00 PM to 8:00 PM ET.
How often does CMCSA fill its gaps?
Over the past 5 years, 100% of CMCSA gap-ups have fully filled and 88% of gap-downs have filled. Median time to fill is 15 trading days for gap-ups and 14 trading days for gap-downs.
Does CMCSA have any unfilled gaps?
No. CMCSA has no unfilled gap events from the past 60 days; all recent gaps have been filled.
What's the average return after a CMCSA gap?
Based on 9 qualifying gap events over the past 5 years, the average 20-trading-day return after a CMCSA gap up is -4.46%, and after a gap down is +4.81%.