So far, it's been a calm morning for stocks. But statements will soon trickle in for brokerage accounts for January to March — a quarter where the S&P fell 4.6%, the Nadsaq fell 10%, and the Dow fell 9%. (That's before recent tariff tumult.) Today: the importance of portfolio diversification and how to think about financial planning during market turbulence. Also: inklings of tariff exemptions for the auto industry.