$Groupon(GRPN)$ SAN FRANCISCO (MarketWatch) -- Groupon Inc. [s; grpn] on Tuesday reported a fiscal first-quarter loss of $37.8 million, or 6 cents a share, on revenue of $757.6 million. During the same period a year ago, Groupon lost a penny a share on $601.4 million in sales. Excluding one-time items, Groupon would have lost a penny a share. Analysts surveyed by FactSet had forecast Groupon to lose 3 cents a share on $740.1 million in revenue. Groupon shares shed 4% in after-hours trading following the release of its results.