Quote from NoDoji:
The stock market is an auction, meaning "fair value" is whatever the current price is. One party sells because they believe price is going lower; the other party buys because they believe price is going higher. The belief can be based on fundamentals, indicators, technical price levels, analyst opinion, recommendation of a friend, newsletter, etc.
If you have a fundamental opinion about a company and the "unfair" value of its stock (too high or too low), and are trading for the longer term to prove your opinion correct and produce a profit, the thing that matters most is that you have a risk management plan on your position, and an account large enough to weather irrational exuberance or panic in the market that runs price against you in the meantime.
http://www.businessinsider.com/whitney-tilson-short-netflix-2010-12
Quote from BwPirt:
Would shorting it be a terrible idea?
Quote from stock777:
Those that can, trade, aint talking about it.