Corning tumbles 12% after earnings, leading rout in optical stocks — Live Feedhttps://www.live-feeds.com/feed/corning-tumbles-12-after-earnings-leading-rout-in-optical-stocksContinuously updated, source-cited coverage. Corning Shares Plummet Following Q2 Earnings Reporthttps://www.live-feeds.com/feed/corning-tumbles-12-after-earnings-leading-rout-in-optical-stockshttps://www.live-feeds.com/feed/corning-tumbles-12-after-earnings-leading-rout-in-optical-stocks#u27080Thu, 30 Jul 2026 12:29:30 +0000Corning stock experienced its worst day in 6 years after reporting Q2 2026 results. Despite an earnings beat, the stock fell due to company guidance. This decline triggered a broader sell-off in optical stocks.What's confirmed:Corning reported an earnings beat for Q2 2026.Corning stock fell following its Q2 2026 guidance.Still unconfirmed:Corning stock tumbled 16%.The stock decline led to a rout in optical stocks.This was the worst day for Corning stock in 6 years.The stock fell after fiber deals with Nvidia and Amazon.