154.06 USD
↗ 2.61 (1.72%)PRE MARKET (AS OF Fri 05:29 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 $154.06 in premarket, up $2.61 (1.72%) from its previous close of $151.45.
📅 GLW is expected to report earnings around Oct 27, 2026 before the open (estimated), 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 33 qualifying gap events (gaps of 5% or more at the open) — 22 gap-ups and 11 gap-downs. Gap-ups averaged +7.1%, 82% have fully filled, median time to fill 5 trading days. Gap-downs averaged -7.6%, 82% have fully filled, median time to fill 4 trading days. Most recent: a -6.7% gap down 4 days ago, still unfilled. GLW has 4 unfilled gaps from the past 60 days; the largest is a -6.7% gap down on Aug 18, 2026, currently 55% retraced. Average 20-trading-day return after a GLW gap up: +1.16%. After a gap down: -0.45%.
Gap Ups22 events
Fill Rate
81.8%
Avg Gap
7.1%
Avg 50% Fill
2d
Avg Fill
5d
Gap Downs11 events
Fill Rate
81.8%
Avg Gap
7.6%
Avg 50% Fill
1.5d
Avg Fill
4d
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% | 68% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 45% | 82% | 91% | 91% |
| fills 50% | 45% | 73% | 82% | 91% |
| fills 75% | 18% | 64% | 73% | 82% |
| fills 100% | 0% | 55% | 64% | 73% |
Active Unfilled Gaps (past 60 days)
4 days ago
2026-08-18
Gap %
-6.67%
Gap From
$173.21
% vs Current
+15.60%
retraced 55% to $168.05
18 days ago
2026-08-04
Gap %
+5.70%
Gap From
$146.64
% vs Current
-2.14%
retraced 83% to $148.05
23 days ago
2026-07-30
Gap %
+5.14%
Gap From
$124.05
% vs Current
-17.21%
retraced 7% to $130.00
52 days ago
2026-07-01
Gap %
-6.24%
Gap From
$255.43
% vs Current
+70.47%
retraced 9% to $240.87
Complete Gap History — 33 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 4 days ago | $173.21 | -6.67% | Open | 1d | — | 55% | 55% | 55% | 55% |
| 10 days ago | $159.19 | +6.04% | Filled | 2d | 2d | 48% | 100% | 100% | 100% |
| 18 days ago | $146.64 | +5.70% | Open | 3d | — | 50% | 51% | 51% | 83% |
| 22 days ago | $135.22 | +6.33% | Filled | 1d | 2d | 65% | 100% | 100% | 100% |
| 23 days ago | $124.05 | +5.14% | Open | — | — | 7% | 7% | 7% | 7% |
| 25 days ago | $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% |
Frequently Asked Questions
What is GLW's premarket price?
Corning (GLW) is trading at $154.06 in premarket, up $2.61 (1.72%) from the previous close of $151.45.
Why is GLW moving in premarket?
Corning (GLW) is up 1.72% 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, 82% of GLW gap-ups have fully filled and 82% of gap-downs have filled. Median time to fill is 5 trading days for gap-ups and 4 trading days for gap-downs.
Does GLW have any unfilled gaps?
Yes. GLW has 4 unfilled gaps from the past 60 days. The largest is a -6.7% gap down from Aug 18, 2026 and is currently 55% retraced.
What's the average return after a GLW gap?
Based on 33 qualifying gap events over the past 5 years, the average 20-trading-day return after a GLW gap up is +1.16%, and after a gap down is -0.45%.
When does GLW report earnings?
GLW is expected to report earnings around Oct 27, 2026 before the open (estimated), with an estimated EPS of $0.88.