By Elliot Gulliver-Needham IG Group has launched a platform in the UK providing US-listed options and futures trading following the impact that meme stocks and crypto has had on interest in retail investing, City A.M. can reveal. Tastytrade, which was bought by IG Group in 2021, will expand into the UK this summer, allowing retail investors to trade derivatives and stocks across over 7,000 underlying holdings. JJ Kinahan, CEO of IG North America and president of Tastytrade, told City A.M. that the growth of meme stocks like Gamestop had led retail investors to become “interested in the markets…