200.48 USD
↗ 5.56 (2.85%)PRE MARKET (AS OF 05:29 AM EDT)
GLW Stock Premarket
Corning Incorporated
GLWNYSE • USD
Market: OPEN
Premarket trading runs 4:00 AM – 9:30 AM ET.
GLW last traded at $200.48 in premarket, up $5.56 (2.85%) from its previous close of $194.92.
📅 GLW is expected to report earnings around Aug 4, 2026 before the open (estimated), with an estimated EPS of $0.76. GLW earnings details →
GLW Premarket Chart
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, GLW has had 21 qualifying gap events (gaps of 5% or more at the open) — 14 gap-ups and 7 gap-downs. Gap-ups averaged +7.7%, 79% have fully filled, median time to fill 11 trading days. Gap-downs averaged -6.8%, 100% have fully filled, median time to fill 6 trading days. Most recent: a +8.6% gap up 14 days ago, which filled in 2 trading days. GLW has 1 unfilled gap from the past 60 days — a +16.8% gap up on May 6, 2026, currently 86% retraced. Average 20-trading-day return after a GLW gap up: +6.71%. After a gap down: +8.49%.
Gap Ups14 events
Fill Rate
78.6%
Avg Gap
7.7%
Avg 50% Fill
2.5d
Avg Fill
11d
Gap Downs7 events
Fill Rate
100.0%
Avg Gap
6.8%
Avg 50% Fill
1d
Avg Fill
6d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 57% | 86% | 86% | 100% |
| fills 50% | 36% | 64% | 64% | 79% |
| fills 75% | 14% | 43% | 50% | 64% |
| fills 100% | 14% | 36% | 43% | 64% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 57% | 86% | 100% | 100% |
| fills 50% | 57% | 71% | 86% | 100% |
| fills 75% | 29% | 71% | 86% | 100% |
| fills 100% | 0% | 57% | 71% | 86% |
Active Unfilled Gaps (past 60 days)
47 days ago
2026-05-06
Gap %
+16.83%
Gap From
$162.10
% vs Current
-16.84%
retraced 86% to $166.00
Complete Gap History — 21 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 14 days ago | $177.58 | +8.63% | Filled | 1d | 2d | 52% | 100% | 100% | 100% |
| 20 days ago | $176.70 | +5.55% | Filled | 4d | 4d | 5% | 100% | 100% | 100% |
| 2026-05-06 | $162.10 | +16.83% | Open | 1d | — | 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 $200.48 in premarket, up $5.56 (2.85%) from the previous close of $194.92.
Why is GLW moving in premarket?
Corning (GLW) is up 2.85% 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, 79% of GLW gap-ups have fully filled and 100% of gap-downs have filled. Median time to fill is 11 trading days for gap-ups and 6 trading days for gap-downs.
Does GLW have any unfilled gaps?
Yes. GLW has 1 unfilled gap from the past 60 days. The largest is a +16.8% gap up from May 6, 2026 and is currently 86% retraced.
What's the average return after a GLW gap?
Based on 21 qualifying gap events over the past 5 years, the average 20-trading-day return after a GLW gap up is +6.71%, and after a gap down is +8.49%.
When does GLW report earnings?
GLW is expected to report earnings around Aug 4, 2026 before the open (estimated), with an estimated EPS of $0.76.