It's almost like confidence is its own commodity and serious investors try to beat the curve and buy stock at a point just before confidence rises (leading to a higher market value for the stock).
If confidence in a company's stock is perpetually high (Coca-Cola, Walmart), you can
assume that investors won't see a relatively high return on their investment. People
invest in these kinds of companies because they're confident that the company is a
stable investment. The buy low / sell high kinds of companies are investment risks and
depending on who you are (or when you buy/sell) you might be happy to see confidence
fluctuate!
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