Mossberg, while you are correct in saying that the market is the...

Mossberg, while you are correct in saying that the market is the best measure of a stock, at that point in time
Some investors May be looking at a different time interval.

What is the market after all. It is the collective opinion of investors at that moment in time. Elections get it wrong, the market can also get it wrong. Proof of that is how a stock may suddenly increase in share price or similarly plunge in value. The market is changing its mind in an instant.