For a start it's 'their' not 'there'. And do you think that PSY...

For a start it's 'their' not 'there'. And do you think that PSY is the only stock that is potentially over priced? I'd guess a very high percentage of stocks are over priced or have been for a significant period. A lot of people are buying on sentiment more than fundamentals, they're playing 'the run' of a stock. Whether the market cap is ridiculously high or not doesn't factor into their decision to buy, it's a short term trade on a running stock. I'm not sure why you had to insult every holder's intelligence by suggesting it's over priced? That's for the market to determine, not the individual.