135.18 USD
↗ 2.92 (2.21%)PRE MARKET (AS OF 09:29 AM EDT)
GLW Stock Premarket
Corning Incorporated
GLWNYSE • USD
Market: CLOSED
Premarket trading runs 4:00 AM – 9:30 AM ET.
GLW last traded at $135.18 in premarket, up $2.92 (2.21%) from its previous close of $132.26.
📅 GLW is scheduled to report earnings on Oct 27, 2026 before the open (confirmed), with an estimated EPS of $0.88. GLW earnings details →
GLW Premarket Chart
GLW Premarket News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, GLW has had 34 qualifying gap events (gaps of 5% or more at the open) — 22 gap-ups and 12 gap-downs. Gap-ups averaged +7.1%, 86% have fully filled, median time to fill 6 trading days. Gap-downs averaged -7.8%, 83% have fully filled, median time to fill 5 trading days. Most recent: a -9.5% gap down on Sep 14, 2026, which filled in 17 trading days. Average 20-trading-day return after a GLW gap up: +1.46%. After a gap down: +0.31%.
Gap Ups22 events
Fill Rate
86.4%
Avg Gap
7.1%
Avg 50% Fill
2d
Avg Fill
6d
Gap Downs12 events
Fill Rate
83.3%
Avg Gap
7.8%
Avg 50% Fill
2d
Avg Fill
5d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 68% | 86% | 86% | 95% |
| fills 50% | 41% | 73% | 73% | 82% |
| fills 75% | 9% | 55% | 59% | 73% |
| fills 100% | 9% | 50% | 55% | 73% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 42% | 83% | 92% | 92% |
| fills 50% | 42% | 75% | 83% | 92% |
| fills 75% | 17% | 58% | 67% | 92% |
| fills 100% | 0% | 50% | 58% | 75% |
Complete Gap History — 34 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-09-14 | $166.40 | -9.47% | Filled | 6d | 17d | 23% | 59% | 64% | 100% |
| 2026-08-18 | $173.21 | -6.67% | Open | 1d | — | 55% | 55% | 55% | 83% |
| 2026-08-12 | $159.19 | +6.04% | Filled | 2d | 2d | 48% | 100% | 100% | 100% |
| 2026-08-04 | $146.64 | +5.70% | Filled | 3d | 15d | 50% | 51% | 51% | 100% |
| 2026-07-31 | $135.22 | +6.33% | Filled | 1d | 2d | 65% | 100% | 100% | 100% |
| 2026-07-30 | $124.05 | +5.14% | Open | — | — | 7% | 7% | 7% | 7% |
| 2026-07-28 | $143.36 | -15.07% | Filled | 3d | 4d | 20% | 100% | 100% | 100% |
| 2026-07-21 | $153.10 | +5.36% | Filled | 1d | 3d | 57% | 100% | 100% | 100% |
| 2026-07-14 | $183.11 | +5.39% | Filled | 1d | 2d | 70% | 100% | 100% | 100% |
| 2026-07-09 | $184.03 | +9.63% | Filled | 1d | 3d | 54% | 100% | 100% | 100% |
| 2026-07-01 | $255.43 | -6.24% | Open | — | — | 9% | 9% | 9% | 9% |
| 2026-06-25 | $205.83 | +6.18% | Filled | 2d | 6d | 43% | 100% | 100% | 100% |
| 2026-06-23 | $209.83 | -8.28% | Filled | 2d | 2d | 14% | 100% | 100% | 100% |
| 2026-06-08 | $177.58 | +8.63% | Filled | 1d | 2d | 52% | 100% | 100% | 100% |
| 2026-06-02 | $176.70 | +5.55% | Filled | 4d | 4d | 5% | 100% | 100% | 100% |
| 2026-05-06 | $162.10 | +16.83% | Filled | 1d | 49d | 52% | 52% | 72% | 72% |
| 2026-04-28 | $168.01 | -10.07% | Filled | 1d | 6d | 64% | 100% | 100% | 100% |
| 2026-04-08 | $148.52 | +5.68% | Filled | 15d | 16d | 11% | 11% | 11% | 100% |
| 2026-03-05 | $144.84 | -5.99% | Filled | 1d | 14d | 83% | 83% | 83% | 100% |
| 2026-02-03 | $110.36 | +6.29% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-01-27 | $94.95 | +7.50% | Open | — | — | 15% | 36% | 36% | 36% |
| 2025-10-28 | $89.37 | -5.66% | Filled | 1d | 2d | 58% | 100% | 100% | 100% |
| 2025-07-29 | $55.41 | +6.24% | Open | — | — | 27% | 27% | 27% | 27% |
| 2025-01-29 | $51.23 | +7.57% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-01-27 | $54.25 | -5.35% | Filled | 3d | 3d | 5% | 100% | 100% | 100% |
| 2024-10-29 | $46.84 | +5.53% | Filled | 2d | 6d | 16% | 100% | 100% | 100% |
| 2024-07-30 | $42.68 | -7.33% | Filled | 17d | 34d | 12% | 42% | 42% | 96% |
| 2024-07-08 | $38.44 | +6.40% | Filled | 17d | 17d | 3% | 3% | 3% | 100% |
| 2024-01-30 | $31.15 | +5.30% | Filled | 3d | 11d | 13% | 65% | 100% | 100% |
| 2022-11-10 | $32.06 | +5.74% | Filled | 6d | 26d | 40% | 68% | 68% | 68% |
| 2022-10-25 | $32.33 | -7.73% | Filled | 1d | 2d | 78% | 100% | 100% | 100% |
| 2022-04-26 | $34.42 | +5.17% | Filled | 1d | 17d | 54% | 76% | 76% | 100% |
| 2022-01-26 | $35.30 | +15.01% | Filled | 28d | 50d | 32% | 32% | 32% | 34% |
| 2021-10-26 | $38.61 | -5.34% | Filled | 9d | 10d | 18% | 23% | 100% | 100% |
Related: GLW quote & chart · After hours · Technical analysis · Fundamentals · Earnings · Short interest
Frequently Asked Questions
What is GLW's premarket price?
Corning (GLW) is trading at $135.18 in premarket, up $2.92 (2.21%) from the previous close of $132.26.
Why is GLW moving in premarket?
Corning (GLW) is up 2.21% from its previous close in premarket trading. Premarket moves are usually driven by company-specific news, earnings results, analyst rating or price-target changes, or broad market and sector sentiment. Check the latest GLW premarket headlines and gap history below for the likely catalyst.
When does GLW premarket trading start?
Premarket trading for GLW on the NYSE 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 GLW fill its gaps?
Over the past 5 years, 86% of GLW gap-ups have fully filled and 83% of gap-downs have filled. Median time to fill is 6 trading days for gap-ups and 5 trading days for gap-downs.
Does GLW have any unfilled gaps?
No. GLW has no unfilled gap events from the past 60 days; all recent gaps have been filled.
What's the average return after a GLW gap?
Based on 34 qualifying gap events over the past 5 years, the average 20-trading-day return after a GLW gap up is +1.46%, and after a gap down is +0.31%.
When does GLW report earnings?
GLW is scheduled to report earnings on Oct 27, 2026 before the open (confirmed), with an estimated EPS of $0.88. Corning Incorporated is officially scheduled to report its third-quarter 2026 financial results on Tuesday, October 27, 2026, with a conference call at 8:30 AM ET.