Sector rotation is a strategy based on moving money between stock market sectors to stay ahead of booms and busts. But does the research say it works? NerdWallet is committed to editorial integrity.

Meltwater from the polar ice caps, combined with the shifting spin of Earth's core, is messing with the Earth's rotation to the point that we might need to adjust for a "negative leap second." The ...

AI and semiconductor stocks may be falling, but the broader market remains resilient. Here’s why today’s volatility looks more like rotation than weakness.

For most of human history, our ancestors kept time by the sun—the interval between one sunrise and the next marked the passage of what we call a day. But then, in the 1950s, scientists invented atomic ...

While it’s only a few weeks into 2026, the latest data shows that the tables are turning in the stock market. Small-cap companies are outpacing large caps, in an early reversal of last year’s dynamic.