Stock markets

Jim Simons, billionaire quantitative investing pioneer who generated eye-popping returns, dies at 86

Jim Simons, a mathematician who founded the most successful quantitative hedge fund of all time, passed away on Friday in…

Behind America’s divided economy: Booming luxury travel and a jump in ‘relief’ loans

At American Express, consumers are continuing to open high-fee credit cards and splurge on luxuries like travel. But for lending…

European companies in China are under pressure from slower growth, overcapacity

BEIJING — European companies in China are finding it harder to make money in the country as growth slows and…

Stocks making the biggest moves after hours: Airbnb, Robinhood, Arm Holdings, Equinix and more

Check out the companies making headlines in extended trading: Airbnb — The hoteling company issued disappointing forward guidance, dragging shares…