Jan 19 (Reuters) - BB Biotech AG:
* SHOWS A DOUBLE-DIGIT TOTAL RETURN FOR 2017 - MID CAPS OVERDELIVER ON INNOVATION AND ARE BECOMING A KEY UPSIDE TRIGGER
* UNDERLYING PORTFOLIO PERFORMED WELL, ENDING YEAR UP 23.4% IN CHF, 12.5% IN EUR AND 29.2% IN USD
* FULL YEAR 2017 DATA SHOWED A NET GAIN OF CHF 688 MN COMPARED TO A NET LOSS OF CHF 802 MN FOR FULL YEAR 2016
* WILL PROPOSE A RECORD REGULAR DIVIDEND OF CHF 3.30 PER SHARE AT GENERAL ASSEMBLY ON MARCH 13, 2018
* BELIEVES THAT 2018 WILL CONTINUE TO BRING IMPORTANT PRODUCT APPROVALS AND MILESTONES FOR SECTOR AND FOR ITS PORTFOLIO Source text for Eikon: Further company coverage: