Cerebras Systems' first quarter revenue was $193.4 million, exceeding analysts' expectations of $181.4 million. First quarter hardware revenue was $110.6 million and cloud revenue was $82.8 million. Full-year revenue is expected to be between $855 million and $865 million, while analysts' expectations were $824.8 million. Second quarter revenue is expected to be around $194 million, compared to analysts' expectations of $173.3 million.

Goldman Sachs analyst Bobby Molavi compared the current situation to the 19th-century British railway mania: 500 companies spent more than the nation's annual income building 8,000 miles of railway, with most early investors losing out, while the real beneficiaries were the later "passengers." He pointed out that the current AI craze is driven by both debt and momentum, and that the S&P 500’s forward P/E ratio of 18x is only "a bit cheaper." Whether the builders can retain value is uncertain, and history does not offer an optimistic answer.

The shrinking valuations of two major giants have triggered a chain reaction—investors are adopting more conservative revenue multiples for AI startups and are directly halting high-valuation financing for companies with zero revenue. Multiple venture capital firms have advised their portfolio companies to lower valuation expectations and to quickly build up cash reserves. Market participants warn that the outcome of Anthropic’s IPO will be a barometer for the industry: if successful, the boom will continue; if it fails, some companies may face elimination.

Morgan Stanley still maintains its most optimistic "Overweight" rating, but has lowered its year-end 2027 target price from $31 to $25.

For Corning, the recent profit growth mainly comes from the expansion of AI clusters. As the number of optical links crossing cabinets and campuses increases, customers need to deploy more optical fibers within limited conduit and cabinet space, thus driving demand for high-density optical cables and connection systems.