When the long-short momentum basket dropped 10pc or more over a five-day span in the past, it proceeded to rise in the following week 80pc of the time.

The heaviest weight on the market was Nvidia, whose chips are powering much of the move into AI. It sank 3.5%.

Walmart’s adjusted earnings miss analysts’ estimates but second-quarter revenue tops forecasts. Tech stocks Palantir, Nvidia, ...

The lessons from the MIT study were less about what's wrong with AI models and more about what's wrong with the way companies ...