Investors digested President Donald Trump’s latest tariff exemptions and looked toward a big week for first-quarter earnings.

Nvidia on Tuesday said it would take $5.5 billion in charges after the U.S. government limited exports of its H20 artificial intelligence chip to China, a key market for one of its most popular chips.

Over my forty years or so in and around dealing rooms and financial markets, I have heard many theories as to how to approach that problem and have settled on a process that has worked for me.