The valuation of the largest companies in the world fluctuates by market capitalization day to day, even minute by minute, but true success is a marathon, not a sprint.

You heard the news: propelled by the AI frenzy, the chipmaker Nvidia passed the $3 trillion market cap and became the most valuable company in the world by market capitalization—for a few days last June, that is. Since then, things have returned more or less to what they used to be: as of September 3, 2024, when the market closed, Apple was still the king of the stock exchanges, closely followed by Microsoft. Incidentally, that was also the day when, amid a stock selloff, Nvidia lost $279 billion in market value, the largest wipeout in U.S. history (while…