what u guys think about the stock in sg compare to my? Seems like sg is more active than my huh?

seems like got good future prospect on this counter. Anyway, im new to stock, by looking at the company's PE ratio, it is 262x!! So damn high. Their NAV is around 30% of the current price. I wonder why so much ppl still inject in this stock.
Feel like the share price of a stock is mainly caused by the demand and supply. If lot ppl pump in a specific counter then the share will shoot up sharply and when no 1 is actively playing with the share then the share will drop back to the normal level. See who is the last person hold on the over price share then the guy is making the lost while the rest is make a gain from there. Of course it is also depend on the announcement.
Anyone mind to share his view?