Shopify logo is seen in this illustration taken, February 11, 2025. REUTERS/Dado Ruvic/Illustration Purchase Licensing Rights, opens new tabAug 6 (Reuters) - Shopify (SHOP.TO), opens new tab, forecast third-quarter revenue above market estimates on Wednesday as demand from retailers for its e-commerce services remains strong despite tariff-related jitters, sending its U.S. shares up 16% premarket.The upbeat forecast comes as a welcome sign after investor concerns around President Donald Trump's ...