The U.S. stock market staged an impressive rally yesterday, as investors turned their attention to the economy and shrugged off concerns about the coronavirus. Of note, the Delta variant (a highly contagious version of the virus) has been presenting health challenges lately, and some parts of the country have imposed restrictions, as a result. No doubt, Wall Street will be monitoring the situation closely in the weeks ahead. Meanwhile, the second-quarter earnings season has commenced, and investors have been busy sifting through numerous corporate reports. On our shores, the U.S. equity futures are mixed, suggesting a similar start to the day.