Skip to main content
GLW
NYSE Technology

Corning Plunges 20% as Q3 Guidance Misses on Slowing Optical Growth

Tom Rudovsky · Reported by Reuters
More coverage: Electronic Component Stocks · Technology
Sentiment info
Negative
Importance info
9
Price
$114.82
Mkt Cap
$98.818B
52W Low
$54.92
52W High
$271.78
52W Position info
109% above low
Off High info
58% below high
Rel. Volume info
1.0× avg
Market data snapshot near publication time

GLW has more than doubled off its 52-week low of $54.92.

Summary

Corning shares are down over 20% after the company forecast Q3 core sales of $4.9B-$5B and adjusted EPS of $0.85-$0.89, both below consensus. The miss is driven by slowing growth in its Optical Communications segment—up 32% this quarter versus 36% last quarter and 81% a year ago—and persistent headwinds in handheld glass from memory pricing and mid-teen volume declines. Additionally, capacity limits and a smartphone slump are weighing on the Q3 outlook. This follows a strong Q2 beat reported earlier today, but the guidance shortfall against lofty AI-driven expectations is wiping out $23.2B in market value. The optical fiber business remains the growth engine, but the deceleration raises questions about whether the AI infrastructure ramp is plateauing. Watch for management commentary on the earnings call regarding the trajectory of data-center demand and any updates to the long-term $30B sales target.

At the time of this announcement, GLW was trading at $114.82 on NYSE in the Technology sector, with a market capitalization of approximately $98.8B. The 52-week trading range was $54.92 to $271.78. This news item was assessed with negative market sentiment and an importance score of 9 out of 10. Source: Reuters.


Price Chart

Share this article

Copied!

GLW - Latest Insights

GLW
Jul 28, 2026, 8:41 AM EDT
Source: Dow Jones Newswires
Importance Score:
8
Price at Filing: $117.99
Real-time Price: $115.81 info
Change: -$2.18 (-2%) info
Market Cap: $99.67B info
GLW
Jul 28, 2026, 7:37 AM EDT
Source: Dow Jones Newswires
Importance Score:
8
Price at Filing: $119.40
Real-time Price: $115.81 info
Change: -$3.59 (-3%) info
Market Cap: $99.67B info
GLW
Jul 28, 2026, 7:03 AM EDT
Filing Type: 8-K
Importance Score:
7
Price at Filing: $120.50
Real-time Price: $115.81 info
Change: -$4.69 (-4%) info
Market Cap: $99.67B info
GLW
Jun 25, 2026, 3:13 AM EDT
Source: Wiseek News
Importance Score:
8
Price at Filing: $215.60
Real-time Price: $115.81 info
Change: -$99.79 (-46%) info
Market Cap: $99.67B info
GLW
Jun 10, 2026, 3:13 AM EDT
Source: Wiseek News
Importance Score:
8
Price at Filing: $172.07
Real-time Price: $115.81 info
Change: -$56.26 (-33%) info
Market Cap: $99.67B info