By Tom Westbrook and Amanda Cooper SINGAPORE/LONDON (Reuters) -Global shares steadied on Wednesday, after another selloff driven by nerves over AI valuations, although the mood was cautious ahead of what could be make-or-break earnings from chip titan Nvidia and U.S. jobs data this week. The tech-heavy Nasdaq fell 1.2% overnight, marking a second straight daily decline. Worries about lofty valuations have knocked it more than 6% below late October's record peak. Heading towards the open, S&P 500 futures and Nasdaq 100 futures were up 0.3-0.4%, having climbed steadily throughout the European morning. The STOXX 600 reversed early losses to rise 0.1%, but is still down 4% from record highs reached less than a week ago. MSCI's All-World index was down 0.1%, easing for a fifth straight session

See Full Page