The Weekend Notebook

The AI boom can be summed up in one ticker: NVIDIA (NVDA), now the world’s most valuable company at $4.3 trillion; commanding a record 8% of the S&P 500....

Canada, under Prime Minister Mark Carney, is taking a beating from U.S. tariffs. But Carney refuses to cave to President Donald Trump’s demands—raising the question: Is confrontation with the U.S. Canada’s only choice?...

Riding High — and Heading for Trouble...

Argentina: Fiscal Fireworks and Another IMF Bailout...

Powell Holds the Line as Trump Turns Up the Heat...