Exchange operator and financial services provider Nasdaq Inc. (NASDAQ: NDAQ) completed a successful first half of 2018 as its second-quarter 2018 earnings report displayed a convincing balance between trading and nontrading results. While reported revenue advanced only 3% against the prior-year period, underlying growth remained vigorous. We'll sift through the details after a stroll through big-picture numbers directly below.Data source: Nasdaq Inc.Nasdaq's reported revenue growth of roughly 3% was impacted by a headwind of 5 percentage points due to the divestiture of its Public Relations Solutions and Digital Media Services businesses, while foreign currency translation provided a 1% boost.