In six of the past seven years, the S&P 500 has delivered double-digit returns. That kind of consistency speaks to the power of long-term investing, even in the face of frequent uncertainty. What made last year especially notable is that returns were not limited to...

It has been nearly three years since the arrival of OpenAI’s ChatGPT-3.5, marking generative AI’s watershed moment. Suddenly, algorithms could produce text, computer code and images comparable to human output—and an AI investment boom was underway. Fast-forward to today, when suddenly, nobody writes their own...