Charles Kindleberger: “There is nothing as disturbing to one’s well-being and judgment as to see a friend get rich” (Manias, Panics, and Crashes: A History of Financial Crises, 1989). Market participants are pained by the money that others have made and they’ve missed out on, and they’re afraid the trend (and the pain) will continue further. They conclude that joining the herd will stop the pain, so they surrender. Eventually they buy the asset well into its rise or sell after it has fallen a great deal.
