Meta Platforms (META) and Alphabet (GOOGL) showed starkly different stock movements in May 2026.

While Meta shares fell 11%, Alphabet rose 16% over the same period, reflecting divergent investor sentiment driven by financial results and strategic decisions.

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Alphabet's Strong Earnings Drive Growth

Alphabet's Q1 2026 earnings report delivered robust performance.

Google Cloud revenue surged 63% year-over-year to $20.03 billion, with its cloud backlog nearly doubling to over $460 billion.

The company's AI initiatives, particularly in Search and Waymo, contributed to a 27% year-to-date gain in shares.

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Investors rewarded Alphabet for consistent growth across divisions. Google Search revenue increased 19% to $60.4 billion, while AI-driven queries hit record levels.

CEO Sundar Pichai emphasized the company's progress in autonomous driving and cloud infrastructure.

Meta's Challenges Amid AI Investment

Meta faced market penalties for its aggressive AI spending strategy.

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The company raised 2026 capital expenditure guidance to $125-145 billion, but failed to clarify how this would translate to revenue.

This uncertainty led to an 11% stock drop despite reporting higher-than-expected earnings per share of $10.44.

The social media giant's financial results included an $8.03 billion one-time tax benefit, which diluted investor confidence.

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While Meta's AI investments aim to enhance metaverse and advertising capabilities, the lack of clear revenue linkage to these expenditures raised concerns among market participants.