Plus500, an online service provider for retail customers to trade internationally, said its full-year results are in line with expectations.The company reported a 35% increase in revenues to $82.1m during the first quarter of the year. It also saw the number of new customers grow 63% to 32,880.Plus500 results were helped by positive market conditions during the period, which included the "exceptional" movement in the Swiss franc in January.The group secured the sponsorship of Atlético Madrid Football Club.Chief executive Gal Haber said: "We believe the increased brand awareness resulting from this partnership will help strengthen our position as a leading 'contract for difference' trading platform."Shares were up 0.34% to 727.5p on Thursday at 12:55.