Economics 101: Why Your Investment Activities Don’t Influence the Price of Stocks

They tumble, slide, jump, soar. They get the jitters and often seem moodier than a hormone-addled teenager. They are the stuff of which dreams are made—the rise and fall of fortunes in mythological proportions. I’m thinking of how fortune smiled on that lucky mortal who bought Apple shares for a song back in the ‘80s and became a bajillionaire.  Yes, I’m talking about financial markets. Yes, it’s…