Strong start to 2015 for Optimal as FTSE250 listing progresses 21st May 2015 7:54 am GMT | Last updated: 13th July 2020 Strong start to 2015 for Optimal as FTSE250 listing progresses Related Articles: 1st May 2024 UK online gambling revenue tops £500 million in March 1st May 2024 Caesars Entertainment revenue slips to $2.74 billion in first quarter 1st May 2024 Illinois posts $1.07 billion in February sports bets