Stocks to watch on Tuesday:Opera (OPRA) - hitting new post IPO lows. The stock trades far below the IPO price of $12 despite solid results and a strong cash position. The only concern is the Chinese ownership position, but for now the issue appears the US market not being familiar with their new browsers and news feed focused on emerging markets. The stock is risky, but extremely cheapUber (UBER) - the ridesharing service plans to go public in 2019. Avoid any post IPO pop at all costs. More research: Uber Will Flop Glu Mobile (GLUU) - Cowen names the mobile-game developer a best idea for 2019. The stock is poised for a breakout, but the analyst only gave Glu Mobile a $9.50 target. Traders will love a break of multi-year resistance here at $8. Disclosure: Long GLUU