https://www.iggroup.com/investors/regulatory-news Regulatory filing "Proposed Acquisition of tastytrade, Inc." https://www.londonstockexchange.com/news-article/IGG/proposed-acquisition-of-tastytrade-inc/14834889 https://otp.tools.investis.com/clie...regulatory-story.aspx?cid=2458&newsid=1446143 PR via BusinessWire "IG Group and tastytrade, Inc. Join Together in $1 Billion Landmark Deal" https://www.businesswire.com/news/h...Inc.-Join-Together-in-1-Billion-Landmark-Deal Bloomberg article "IG’s $1 Billion Bet on Tastytrade Seen as Pricey; Shares Fall" https://www.bloomberg.com/news/arti...to-buy-online-broker-tastytrade-for-1-billion .