Tech stocks mixed as Meta, Microsoft affirm big AI spending plans after DeepSeek turmoil
1. Meta plans to invest hundreds of billions in AI infrastructure. 2. Zuckerberg remains confident in long-term AI investments despite competitor concerns. 3. DeepSeek's emergence raised questions about AI demand for established players. 4. Microsoft and SoftBank also increasing investments in AI initiatives. 5. Stock volatility seen as major players react to new AI competitors.