Big Tech is about to spend $200 billion on AI infrastructure this year. This week, investors find out if any of it is working.
Google, Meta, Amazon, and Microsoft all report earnings this week, and the question hanging over every print is the same: is all that money actually producing returns? The stakes couldn't be higher for Nvidia, AMD, and Broadcom, the three chipmakers whose valuations are directly tied to the AI buildout continuing at full throttle. An OpenAI report dropped before Tuesday's session showing the company missing internal targets on revenue and user growth. The sector never recovered.
Nvidia, AMD, and Arm Holdings sold off sharply. The semiconductor index posted its second straight daily loss after a long winning streak.
"If OpenAI is missing its own internal targets," one analyst wrote, "how long can the massive spending on data centers continue at this pace?" The spending numbers are staggering. Google set a $175 billion to $185 billion capex range.
Meta's falls between $115 billion and $135 billion. Amazon raised its expectation to $200 billion.
Those figures represent a collective bet that AI infrastructure demand will keep accelerating through decade's end.
Nvidia is the clearest beneficiary. Management expects revenue to hit $1 trillion by the end of 2027, up from a previous $500 billion target through 2026, according to Susquehanna analyst Christopher Rolland.
Demand for its Blackwell and Rubin chips remains surging. Year to date, Nvidia shares are up roughly 8%.
AMD is preparing its first full-rack solution, Helios, launching in the latter half of this year. Management sees a $1 trillion total addressable market by 2030, double their prior estimate.
Shares have soared 214% over the last year.
Broadcom, per Rolland, looks like "the clearest winner" in custom ASICs, application-specific chips that offer higher efficiency than general-purpose silicon for AI workloads. But the OpenAI report injected fresh doubt into the narrative at the worst possible time. With Amazon, Meta, Microsoft, and Alphabet all reporting this week, every number will face extra scrutiny.
Revenue beats get questioned. Guidance gets picked apart.
"Tuesday was not a selloff," wrote FXEmpire's James Hyerczyk. "It was a preview." The semiconductor sector had surged roughly 45-50% since late March, tracked by the iShares PHLX SOX Semiconductor Sector Index Fund. That kind of vertical climb pushed RSI deep into overbought territory at 80.97, according to Benzinga. The current pullback looks more like a technical cooldown than a structural reversal, but after a rally that sharp, even a pause hits like a wall. The irony? The best-performing semiconductor-adjacent stock this year isn't a chip company at all.
Corning, the 175-year-old glass manufacturer, is up 74% year to date, obliterating Nvidia (up 14-51% range), AMD, and Broadcom. Its optical fiber is the backbone connecting AI data centers. In January, Meta signed a $6 billion deal for Corning's fiber. In March, Corning broke ground on a factory dedicated solely to Meta's cables.
CEO Wendell Weeks said on an April 28 call the company signed two more hyperscale deals of similar size.
Corning's optical communications business generated $1.8 billion in Q1 2026, up 36% year over year. Segment net income jumped 93%. The message from the fiber supplier is clear: the AI buildout is real and accelerating. The question this earnings week is whether the chipmakers can say the same about their customers' returns.
