Shares of Alphabet closed above $335 on Jan. 13, lifting the company’s market capitalization past the $4 trillion milestone for the first time. This achievement cements Alphabet’s position as the world’s second-most valuable public company, a distinction that underscores investors’ confidence in its dominant search franchise and growing exposure to artificial intelligence–driven services.

In November, Alphabet unveiled Gemini 3, a next-generation large language model that has since been integrated into Google Search as both an AI overview feature and a conversational ‘AI mode.’ Early data from the company indicate these enhancements are boosting overall query volume, reversing a period of deceleration. The introduction of AI-driven video and spatial generation tools has further strengthened user engagement, with internal metrics showing a mid-teens percentage increase in daily active users interacting with AI features on YouTube and Maps.

Alphabet’s cloud division entered 2026 with a $155 billion ordering backlog, reflecting a 46% quarter-over-quarter increase and signifying escalating enterprise AI spending. Meanwhile, the company’s core advertising business continues to haul in robust results: advertising revenue grew in the high-teens percentage range year over year in Q4, thanks to strong performance on both search and YouTube platforms. These two segments now account for over 60% of consolidated revenue and more than 70% of operating profit, according to the latest earnings disclosure.

Despite a near-50% rally since early 2025, Alphabet’s forward price-to-earnings ratio remains in line with the mega-cap tech peer group average, at roughly 33 times projected earnings. Major Wall Street strategists have reiterated ‘buy’ ratings, noting a forward PEG ratio close to 1.0 and pointing to multiple catalysts—continued AI adoption, enterprise cloud wins, and further monetization of AI in advertising—as drivers that could sustain long-term shareholder returns.