In a historic moment for the tech industry, Google’s parent company, Alphabet, has officially crossed the $4 trillion market capitalization mark, joining an elite group of global companies. The milestone comes after Alphabet shares rose about 1% following Apple’s announcement that Google’s Gemini will power its AI models and the next generation of Siri, reinforcing the company’s dominant position in artificial intelligence.

Alphabet now stands alongside Nvidia, Microsoft, and Apple as the only four companies ever to surpass the $4 trillion valuation threshold.

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This remarkable achievement caps a strong year for the tech giant, whose stock surged 65% in 2025 amid the rollout of new AI chips, the launch of Gemini 3, and renewed momentum in the global AI race. Analysts predict that Alphabet’s growth trajectory is likely to continue into 2026, as demand for AI-powered solutions expands across industries.

Alphabet’s ascent reflects the broader dominance of U.S. tech companies in the global market. The latest rankings of the world’s most valuable companies reveal that the top 10 firms are led overwhelmingly by U.S.-based technology companies:

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Nvidia continues to hold the top spot with a $4.5 trillion valuation, driven by its leadership in AI computing hardware. Apple and Microsoft follow closely, underscoring the continued influence of tech giants on global markets. Outside the U.S., Taiwan’s TSMC and Saudi Arabia’s Aramco remain the only non-U.S. companies to feature in the top 10, highlighting the concentration of wealth and innovation in the American tech sector.

With Alphabet’s entry into the $4 trillion club, the stage is set for an exciting 2026, as tech titans race to innovate, expand AI capabilities, and redefine the future of global business.