They are, but most exploit profit opportunities introduced into market prices by human actors. If humans were rational, there would be just as many people bett

They are, but most exploit profit opportunities introduced into market prices by human actors. If humans were rational, there would be just as many people betting against stocks as betting on them. The idea that upward price movement is always good is also misleading. A price can be irrationally too high, so corrections are good. Most of the conventional wisdom (and typical lexicon) about markets is laden with superstition and bias.