GKOS - Glaukos +6% on move to SmallCap 600 March, 09 2020 05:40 PM Glaukos Corporation Glaukos (NYSE:GKOS) is up 6% postmarket after news that it's joining the S&P SmallCap 600 index.More news on: Glaukos Corporation, AK Steel Holding Corporation, Healthcare stocks news, Stocks on the move Read more ...