Corning’s AI fiber boom is real, but its stock price may be getting out of hand

Morning Star AU00:00

Key takeawaysCorning’s supply deal with Meta derisks its fiber supply buildout, but key financial terms remain undisclosed.The market appears to be pricing Corning as a pure-play AI fiber company. But...

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But...</p>\n\n<a href=\"https://www.morningstar.com.au/stocks/cornings-ai-fiber-boom-is-real-its-stock-price-may-be-getting-out-hand\">Source Link</a>\n\n</div>\n\n\n</article>\n</div>\n</body>\n</html>\n","isBrief":false,"type":0,"news_type":1,"symbol":null,"symbol_name":null,"start_time":0,"source_url":"https://www.morningstar.com.au/stocks/cornings-ai-fiber-boom-is-real-its-stock-price-may-be-getting-out-hand","article_id":"2630713320","we_media_id":null,"thumbnails":[],"rights":{"source":"morningstar_stock","url":"https://www.morningstar.com.au/stocks/cornings-ai-fiber-boom-is-real-its-stock-price-may-be-getting-out-hand","rn_cache_url":null,"directOrigin":true},"url":"https://stock-news.laohu8.com/highlight/detail?id=2630713320","pubTimestamp":1777305600,"columns":[],"sourceInfo":{"source_id":"morningstar_stock","name":"Morning Star"},"weMediaInfo":null,"summary":"Key takeawaysCorning’s supply deal with Meta derisks its fiber supply buildout, but key financial terms remain undisclosed.The market appears to be pricing Corning as a pure-play AI fiber company. But","collect":0,"end_time":0,"defaultTopTitle":"morningstar.com.au","property":[],"viewcount":null,"language":"en","relate_stocks":{},"translate_title":"康宁的AI光纤热潮是真实的，但其股价可能会失控","themeId":null,"isJumpTheme":false,"ttsUrl":"https://static.tigerbbs.com/680c5a0b5b21d257523276181936f7a6","symbols_score_info":{"AIYY":0.6,"YMAG":0.79,"AGIX":1.5,"CHAT":1.5,"SOCL":0.79,"NVDA":0.6,"GOOG":0.6,"ARTY":1.5,"META":0.6,"AMZN":0.6,"TSLA":0.6,"AIPO":1.5,"MSFT":0.6,"AAPL":0.6,"MAGY":0.79,"AI":0.9,"GLW":1.5},"content_text":"Key takeawaysCorning’s supply deal with Meta derisks its fiber supply buildout, but key financial terms remain undisclosed.The market appears to be pricing Corning as a pure-play AI fiber company. But it isn’t one—at least, not yet.Morningstar sees Corning stock as overvalued.Materials science giant and fiber-optic cable producer Corning’s GLW stock has more than doubled in 12 months, powered by a landmark supply deal with Meta Platforms META and surging demand for the optical fiber that helps power AI data centers. The Meta deal—a long-term supply agreement to help Corning expand its capacity to produce the fiber-optic cables needed to meet AI infrastructure demands—targets up to $6 billion in sales through 2030. “Corning will expand its optical fiber capacity in North Carolina significantly,” writes Morningstar senior equity analyst William Kerwin.As a longstanding innovator in the optical communication space, Corning could stand as a genuine AI infrastructure winner. But the deal is not without risk. “We view [Corning] as a key enabler of 5G networks and hyperscale data centers, providing the fiber backbone to network operators and AI model builders,” Kerwin writes.Kerwin thinks a robust growth opportunity lies ahead for Corning, but the company operates in a highly capital-intensive space, relies on a hefty R&D budget to maintain its leadership, and is exposed to the risks of a slowdown in the AI spending boom. “To justify where the stock is trading, you basically need to assume everything goes right,” Kerwin says. “We agree growth is going to be really strong. It’s just about the magnitude.” He believes the picture painted by Corning’s latest stock prices is of a company that is years away from actually existing.The Meta deal: Real, but not a blank checkThe January announcement of Corning’s long-term fiber supply agreement with Meta was the single biggest catalyst to reshape the investment thesis. Morningstar raised its fair value estimate to $95 per share from $60 following the deal, modeling roughly $5 billion of the $6 billion total as incremental to prior expectations, with revenue expected to ramp in 2027 and extend through 2030.In Kerwin’s view, the deal resolved a key uncertainty that had long hung over Corning’s AI growth story: not whether demand existed, but whether the firm could build enough supply to meet it. Capital-intensive manufacturing expansions are inherently risky. You invest today for capacity that won’t come online for one to three years, with limited visibility into what the market will look like by then. “The demand has always been there,” Kerwin explains. “It’s a question of how fast they can expand supply to meet it.Kerwin says the Meta agreement changes that calculus. By offering co-investment provisions and likely take-or-pay protections, similar to structures Corning uses in its display glass and cover glass businesses, it gives the company confidence to expand its North Carolina fiber facility, knowing a major customer is effectively sharing the risk. “Getting this co-investment from Meta derisks [expansion] for Corning,” Kerwin says. “It enables them to say, ‘We know we’re going to have this amount of demand, so we can build out the supply.’”Still, meaningful questions remain unanswered. Corning has not disclosed the specific financial terms of the deal—whether it involves an upfront cash investment from Meta, the precise pricing structure, or the exact supply guarantees. “We don’t know what actual financial incentives are in the deal—if that involves a pricing guarantee, a supply guarantee, or if this is a take-or-pay contract,” Kerwin says. “They’re never going to give us those specifics. But that would be the biggest thing we’re still left wanting.” The deal is also phrased as “up to” $6 billion, with no explicit guarantee. Investors focused on AI spending durability should note that qualifier.Supply, not demand, is the limiting factorOne of the more counterintuitive aspects of Corning’s story is that the ceiling on its near-term growth isn’t the strength of AI spending; it’s how fast the company can physically produce fiber. Corning is vertically integrated to an unusual degree, manufacturing not just the finished cable and components but also the raw fiber strands themselves, and even the proprietary furnaces used to make them. That depth of integration is a core source of the company’s cost advantage and narrow economic moat, but it also means capacity additions take time. “The core constraint is the actual fiber production, rather than cabling,” Kerwin says. “It is time-intensive to produce the fiber.” He expects fiber-optic cable demand to remain ahead of supply for at least the next two years, meaning essentially all new capacity Corning brings online will be absorbed immediately. “Any capacity they bring online will get fully sold. In two years, you’re still going to see demand being above supply.” Corning has patented manufacturing processes developed over decades. The company invented optical fiber in the 1970s, and those processes are not easily or quickly replicated by competitors. This supply-constrained dynamic supports margins and pricing power. It also means Morningstar’s aggressive 45%-plus annualized hyperscale growth forecast for the firm’s optical business is itself capped by how fast it can expand, not by how strong demand is.Corning remains a diversified business, but the market isn’t treating it that wayA persistent source of valuation tension is that Corning’s optical fiber business, while its fastest-growing segment, still represents only about 30%-40% of total revenue. The company remains a diversified industrial technology name, with meaningful exposure to display glass for televisions, cover glass for smartphones, automotive ceramics, pharmaceutical glass, and solar components.Television display glass, in particular, continues to matter. It is Corning’s highest-margin segment, generates substantial cash flow, and funds investment across the rest of the business. It is not a growth engine, but it is a steady, profitable anchor. “It’s still material, still 20% of the business,” Kerwin says. “It is a cash cow.”Kerwin’s concern is that the market is valuing Corning as if the optical business were the entire company. “The stock is trading as if the entirety of the sales of Corning are from high-growth optical fiber. Really, it’s only 30%-40%.” Even with growth in the company’s optical fiber at 40% annually, Corning’s overall revenue grows in the mid-teens. That’s strong, but it’s a very different story from pricing in a pure-play AI infrastructure name, since Corning’s other business units are growing at a slower rate, according to Kerwin. Morningstar’s model has optical fiber sales reaching 60% of total revenue by 2030. If that scenario plays out, the multiple the business deserves may indeed rise. But Kerwin says that’s a 2030 story, and Corning’s current price appears to be trading as if the best scenario is already a reality. “It’s getting valued as if it’s already a 70% fiber business, and we’re still far from that.”What to watch for clues to Corning’s futureFor investors, the single most important update will come from clarity on the provisions of the Meta deal. Beyond that, a key question over the next 12-24 months is whether additional hyperscale supply agreements materialize, and whether the financial terms of those deals confirm the co-investment risk-sharing structure Corning has signaled. Morningstar models Corning generating mid-teens revenue growth through 2030, with adjusted operating margins expanding from roughly 15% in 2025 to 23% by the end of the forecast period. At a $95 fair value estimate, the stock is pricing in a strong but disciplined growth case. With Corning trading at $165 per share as of April 22, Verwin says it’s pricing in something closer to a bull case, with limited room for error. “We really like the company; we just think the valuation has gotten pretty frothy.”Bulls sayCorning is the dominant supplier of optical fiber to hyperscale data centers and AI networks, giving it a robust growth opportunity.Corning’s stranglehold on the global display glass market earns it heady cash flow, which it uses to reinvest in all of its businesses.Corning’s debt has the longest average time to maturity of the entire S&P 500, giving it ample time and liquidity to fulfill its obligationsBears sayCorning operates in highly capital-intensive markets that limit its economic returns.Corning is growing more concentrated in optical fiber, which opens it up to end-market cyclicality and exposes it to the risk of a correction or slowdown in AI spendingCorning relies on a hefty R&D budget to maintain its leadership position in its markets. 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