Corning (GLW) has landed an AT&T fiber deal worth more than $3bn, the two companies said on 29 September 2026. AT&T will procure fibre and cable from Corning under a multi-year supply agreement, as first reported by Reuters.
Corning shares climbed 4.01% to $157.60 by 16:00 UTC on the day of the announcement, having risen 3.3% in premarket trading, according to Reuters. The move came despite the stock sitting 6.07% below its 20-day range ahead of the news.
An AT&T fiber deal that dwarfs the 2024 tie-up
Neither company disclosed the contract’s exact duration or annual value. But the new agreement marks a sharp escalation from a prior AT&T-Corning fibre commitment of more than $1bn struck in 2024, according to Converge Digest. Broadband Breakfast reported that terms beyond the headline figure were withheld by both parties, a gap that leaves the near-term revenue cadence for Corning’s optical business unclear.
AT&T pointed to data volumes as the driver. The average AT&T Fibre household now uses more than one terabyte of data a month, five times the level in 2016, Reuters reported, with usage expected to keep rising as AI, cloud and streaming traffic grows.
Fibre build-out fits a wider spending push
The deal sits inside a much larger AT&T infrastructure programme. The carrier has committed more than $250bn over five years to strengthen US connectivity, and it closed a $5.75bn acquisition of Lumen’s fibre business to extend its network footprint, per Reuters. AT&T has said the build-out supports a goal of bringing fast, reliable internet to 60 million Americans by the end of 2030, according to the companies’ joint release carried by PR Newswire.
For Corning, the contract lands as its earnings recover from a volatile patch. Net income swung from a loss of $117m in the third quarter of 2024 to $559m in the second quarter of 2026, according to filings with the SEC. Diluted earnings per share over the same run moved from a 14-cent loss to 64 cents. Against that backdrop, a supply commitment north of $3bn — even spread across several years — represents a meaningful anchor for the optical communications division.
No sign of a pre-announcement short squeeze
Trading data show no unusual positioning ahead of the news. Corning’s short-sale ratio, tracked by FINRA, moved between roughly 0.35 and 0.52 in the ten sessions to 28 September, in line with its recent range rather than spiking as the deal took shape. That suggests the share reaction reflected the announcement itself rather than any leak or pre-positioning by short sellers.
The Wall Street Journal separately confirmed the more-than-$3bn valuation in its own report on the tie-up, adding to a run of same-day coverage that left the core numbers uncontested even as duration and per-year terms stayed private.
What’s still missing
The open question for investors is cadence: how the $3bn-plus commitment breaks down year by year, and how much of it lands in Corning’s results before 2030. Neither company has set a date for further disclosure, and the next scheduled data point is Corning’s following quarterly filing with the SEC, where any change in backlog or customer concentration tied to AT&T would typically surface first.
Until then, the market has taken the headline number at face value. Corning’s shares closed the announcement session near the top of their recent trading band, with the stock’s 20-day high sitting at $170.00 — a level traders will watch if fresh detail on the AT&T contract emerges.
This article is for information only and is not investment advice or a recommendation to buy or sell any asset. Markets move quickly; figures are correct as sourced at the time of writing. Always do your own research before making financial decisions.
