The Dow is up 2.7% in April as of Wednesday’s close.U.S. stock-index futures pointed to a roughly flat open Thursday, putting the main gauges on track for a second-straight day of muted action. The equity market is staying on course for a weekly gain, boosted by enthusiasm over first-quarter earnings. What are the main benchmarks doing? Dow Jones Industrial Average futures YMM8, -0.04% dipped by 6 points, or less than 0.1%, to 24,727, while S&P 500 futures ESM8, -0.11% shed 2.45 points to 2,707.25. Nasdaq-100 futures NQM8, -0.04% shed 0.50 point to 6,843. On Wednesday, the Dow DJIA, -0.16% closed slightly lower, hurt by a selloff for IBM IBM, -7.53% after the tech giant’s latest results, while the S&P 500SPX, +0.08% and the Nasdaq Composite COMP, +0.19% edged up. The three gauges are showing year-to-date gains ranging from 0.1% to 5.7%, having recovered this month from their slump in March. What’s driving markets? First-quarter earnings reports have grabbed investors’ attention this week, with Netflix Inc. NFLX, -0.46% , Goldman Sachs Group Inc. GS, +0.15% and UnitedHealth Group Inc. UNH, -0.90% among the companies that have posted encouraging results.via