$CityDev(C09.SI)$ I have decided to close this profitable position as I have received a notification that my position could be liquidated as my account has a high concentration indicator. I post a question with Tiger AI and got a reply on what it means and how I can check the concentration level on margin for individual stock. This can be check from the yellow $ of the top right corner of each stock. So fellow Tigers do aware on accumulating of highly concentrated on lowly trade stocks have a risk of being liquidated.