The U.S. stock market is poised to be kept on edge next year as investors are caught between fear of missing out on the artificial-intelligence rally and concern that it’s a bubble just waiting to ...

The placid surface of an equity market that’s treaded water for months is masking dramatic swings underneath, as stock moves whipsaw traders and threaten more turbulence ahead.

Implied volatility shows how much movement the market is expecting in the future. Options with high levels of implied volatility suggest that investors in the underlying stocks are expecting a big ...