Meta Platforms shares jumped as much as 10% in trading Thursday after the company delivered fourth-quarter results that beat expectations and issued revenue guidance that convinced skeptics that massive AI investments are translating into advertising dollars. The rally represented one of the largest single-day gains for the social media giant in months.

The Numbers That Moved the Market

Meta's fourth-quarter results exceeded Wall Street expectations across the board:

  • Earnings per share: $8.88 vs. $8.16 expected
  • Revenue: $59.9 billion vs. $58.4 billion expected
  • Year-over-year revenue growth: 24%

But it was the forward guidance that truly electrified investors. Meta projected first-quarter 2026 revenue between $45 billion and $48 billion, with the midpoint above analyst estimates. More significantly, management expressed confidence that 2026 operating income would exceed 2025 levels—even with capital expenditures potentially doubling.

"Wall Street will happily applaud a beat, but it will pay for a story—and Meta handed it one: strong advertising now, enormous AI buildout next, and enough confidence to promise that operating income in 2026 will land above 2025 even after the spending step-up."

— Market analysis

The $135 Billion Question—Answered

Heading into earnings, investor anxiety centered on Meta's AI spending plans. Reports suggested capital expenditures could reach $113 billion or higher, prompting fears that Zuckerberg was prioritizing moonshots over profitability.

Meta confirmed the concerns were warranted—sort of. The company guided for 2026 capital expenditures between $115 billion and $135 billion, nearly double the $72.2 billion spent in 2025. This spending will fund data centers, custom AI chips, and the infrastructure needed to train increasingly sophisticated AI models.

What changed investor sentiment was management's assertion that this spending won't crater margins. By promising operating income growth despite the investment surge, Meta effectively told investors: we're spending more because we're earning more, not because we've lost discipline.

AI Is Already Paying Off

Unlike some tech companies whose AI investments remain speculative, Meta can point to concrete returns. The company's AI-powered advertising improvements have directly boosted revenue by enhancing:

  • Ad targeting: Better matching between advertisers and potential customers
  • Content recommendations: Keeping users engaged longer, creating more ad inventory
  • Ad creative tools: AI-generated images and copy that improve campaign performance

Meta AI, the company's consumer-facing AI assistant, now has over 1 billion active users across Facebook, Instagram, WhatsApp, and Messenger. While direct monetization of this product remains limited, it represents an engagement driver that supports the core advertising business.

Zuckerberg's Vision

CEO Mark Zuckerberg described 2026 as "a major year for AI" and outlined ambitions for "building personal super intelligence"—AI systems tailored to individual users that could transform how people interact with technology.

Whether this vision materializes remains to be seen, but investors appeared willing to give Zuckerberg the benefit of the doubt. His track record on AI—from the shift to algorithmic feeds to the development of recommendation systems—has generally been vindicated by revenue growth.

Why Investors Changed Their Minds

Meta's stock had underperformed in recent months as AI spending concerns mounted. Shares gained only about 14% year-to-date heading into earnings, lagging other Magnificent Seven stocks. The worry was simple: what if Zuckerberg was building infrastructure that would never generate adequate returns?

Thursday's results offered reassurance on several fronts:

  • Revenue acceleration: 24% growth suggests AI improvements are working
  • Margin protection: Management's commitment to operating income growth addresses the core concern
  • Execution track record: Meta has consistently delivered on financial guidance
  • Competitive position: The spending secures Meta's position against rivals also investing heavily in AI

Reality Labs: Still a Drag

Meta's virtual and augmented reality division, Reality Labs, continues to lose money—approximately $4-5 billion in the fourth quarter alone. Total losses since the division's formation exceed $50 billion.

However, the losses have stabilized rather than grown, and the division's prominence in Meta's narrative has diminished as AI takes center stage. The Quest headset line dominates the VR market, and the vision for AR glasses remains years from commercialization.

Investors have largely made peace with Reality Labs losses, viewing them as a long-term option on future computing platforms rather than a near-term financial concern.

Valuation Perspective

Even after Thursday's rally, Meta trades at roughly 22-24 times forward earnings—expensive by the company's historical standards but reasonable for a company growing revenue at 20%+ rates. The stock remains cheaper than most Magnificent Seven peers on a price-to-earnings basis.

The bull case rests on AI driving sustained revenue growth that justifies the infrastructure spending. The bear case focuses on execution risk and the possibility that AI improvements become commoditized, limiting Meta's ability to maintain premium pricing for advertising.

What Comes Next

Meta's 2026 will be defined by several key questions:

  • Can revenue growth continue at 20%+ rates? The company needs advertising to keep booming
  • Will the spending actually stay within guidance? $135 billion is the high end of a wide range
  • How will AI products evolve? Meta AI is just the beginning of consumer applications
  • What happens with regulation? The FTC antitrust case and global regulatory challenges persist

For now, Wall Street has decided that Zuckerberg deserves the benefit of the doubt. The 10% rally represents a vote of confidence that $135 billion isn't reckless spending—it's an investment in a future where Meta remains dominant in digital advertising for years to come.