U.S. stock futures were mixed this morning, with the S&P 500 futures gaining around 0.1% on Tuesday.Shares of Vipshop Holdings Limited VIPS fell sharply in today's pre-market trading after reporting second-quarter results.Vipshop reported second-quarter sales of $3.7 billion, down by 3.6% year-on-year, which topped the Wall Street view of $3.66 billion. Vipshop Holdings registered adjusted earnings per ADS of 54 cents, which aligns with the analyst consensus.For the third quarter of 2024, the company expect ...