Key TakeawaysNvidia shares rose Tuesday as Wall Street awaited the company's highly anticipated fiscal 2025 second-quarter results, which are due to be released after markets close on Wednesday.The stock has faced increased turbulence in the last two months amid concerns about the rollout of Nvidia's next-generation AI chip and the longevity of the AI rally.Morgan Stanley analysts in a note Sunday said the effects of product delays are likely overblown, but high expectations pose a risk to the stock. Nvidia ...