U.S. stock futures were fluctuating on Wednesday after Tuesday’s lower close. Futures of major benchmark indices were mixed.Investors interpreted the latest batch of corporate earnings as solid but not spectacular, offering a convenient excuse to take profits after strong year-to-date rallies.Palantir Technologies Inc. (NASDAQ:PLTR), one of the poster children of this year's AI-fueled rally, slumped around 8% despite easily beating Wall Street estimates and raising its full-year guidance.President Donald Tr ...