Alphabet has surpassed a $4 trillion market valuation, becoming the second most valuable company globally, overtaking Apple. This milestone is attributed to a renewed focus on artificial intelligence, particularly the success of its Gemini models and AI chip rentals. The company's stock surged approximately 65% in 2025 and continued its upward trend, fueled by strong cloud revenue growth and a multi-year deal with Apple to power its AI technology. Investor confidence has been bolstered by Alphabet's perceived leadership in the AI race and its competitive advantages in AI development.