Key facts
- Major tech companies added $2.3 trillion in market value in May.
- Apple, Micron, Samsung, SK Hynix, Microsoft, and Nvidia saw significant market value increases.
- Strong demand for AI chips and upbeat earnings outlooks fueled the rally.
- Apple announced a $100 billion share buyback.
- Micron's 2026 HBM chips were sold out, with HBM4 in production.
The world's most valuable technology companies, excluding Alphabet, experienced a significant surge in market value during May, collectively adding $2.3 trillion. This rally was propelled by strong demand for artificial intelligence chips and positive earnings outlooks. Key players like Apple, Micron Technology, Samsung Electronics, SK Hynix, Microsoft, and Nvidia all saw substantial increases in their market capitalizations. Apple's announcement of a $100 billion share buyback and Micron's report of sold-out 2026 HBM chips contributed to the optimism.