YY was added to my get big list long ago because of profitability. Company attempted a failed buy back of shares in order to relist on mainland China. Stock has not been on it's upward trend in a long time. This may have changed with movement on Dec 8th 2018. I will be long if trend continues higher.
It seems many institutions are not committing to the real future of successful HFT companies. Virtu Financial makes money everyday in many markets and all asset classes. There will always be successful proprietary trading but lets hope we don't have to compete against the robots. It's truly a forgotten gem.