A FEW MONTHS back, we outlined some of the basic logical fallacies that can lead your investment thinking astray. One that I’ve been hearing quite a bit of lately is that of false attribution. In trader talk, it’s putting the ass in assume.
Even among experienced professionals, there’s a rather surprising ignorance of the factors that really move markets. Every high-school economics class starts with the basic law of supply and demand, but pundits, media commentators and even market professionals who should know better choose to focus on just one side of that irrefutably important concept.
Turn on any newscast and you’ll hear the same shockingly ignorant analysis: If the market drops, it’s because investors sold their shares. If the market rallies, it’s because everybody bought. After all, buyers make a stock go up; sellers force a stock’s price down, right?
But while most commentators are quick to interpret a market trend as the result of some action of investors, it’s often their inaction that’s ultimately responsible for the move. (more…)