US stock futures hovered near the flatline on Wednesday as investors remained focused on earnings, while concerns over the US-China trade dispute and the ongoing government shutdown persisted. Netflix tumbled more than 6% in premarket trading after its results were affected by a tax dispute in Brazil, while Texas Instruments fell 7.6% following a disappointing outlook. Thermo Fisher Scientific slipped 4.7% despite reporting stronger-than-expected earnings and revenue. On the upside, AT&T rose 2.4% after adding more wireless subscribers than expected, and Intuitive Surgical surged over 17% following strong earnings and revenue. Tesla (0.1%) and IBM (0.3%) are also scheduled to report quarterly results after the closing bell.