MIAMI--(BUSINESS WIRE)--Vector Group Ltd. (NYSE:VGR) today announced financial results for the three months ended March 31, 2015. GAAP Financial Results First quarter 2015 revenues were $360.8 million, compared to revenues of $347.2 million in the first quarter of 2014. The increase in revenues in 2015 was primarily due to an increase of revenues at Douglas Elliman Realty, LLC. The Company recorded operating income of $44.0 million in the first quarter of 2015, compared to operating income of $