SOXL sinks 15% on Intel, OpenAI cuts its raise to $20B, offline vs online ML

A brutal week for chips, a funding chill for AI, and a staff-level ML interview question every senior candidate should own. Markets: SOXL down about 15% to roughly $77; QQQ down about 3% to around $690; VGT down about 3% to near $117; VUG down about 3% to near $85. Coming week: AMD, Qualcomm and Arm earnings. AI news: OpenAI cuts its fundraising target to $20 billion and Meta gets a credit warning as investors pull back from funding the AI buildout, with Anthropic's IPO ahead. Interview Tip of the Day: Your model's offline metrics improved, but the online A/B test is flat or worse. Why, and how do you find out which cause it is? Did You Know: ELIZA, the 1966 chatbot that only rephrased what you said, yet convinced some users they were talking to a real therapist. Questions or feedback: [email protected]