In my 53 years in the investment world, I’ve seen a number of economic cycles, pendulum swings, manias and panics, bubbles and crashes, but I remember only two real sea changes. I think we may be in the midst of a third one today.

As I’ve recounted many times in my memos, when I joined the investment management industry in 1969, many banks – like the one I worked for at the time – focused their equity portfolios on the so-called “Nifty Fifty.” The Nifty Fifty comprised the stocks of companies that were considered the best and fastest-growing – so good that nothing bad could ever happen to them. For these stocks, everyone was sure there was “no price too high.” But if you bought the Nifty Fifty when I started at the bank and held them until 1974, you were sitting on losses of more than 90% . . . from owning pieces of the best companies in America. Perceived quality, it turned out, wasn’t synonymous with safety or with successful investment.