BUZZ — UK's System1 gains as Brave Bison raises final takeover offer to $70.8 mln
* Shares of marketing technology company System1 Group rise 5.9% at 360p * Brave Bison Group, which is trading flat, increases its final offer for System1, a 13% increase from the prior offer * Revised offer values System1 at 405p per share implying an equity value of about £53.4 million ($70.75 million) * YTD, SYS1 is