Nvidia announces it will be opening its artificial-intelligence server platform to rival chip makers, while Walmart stock ...

The billionaire Bill Ackman foresaw the UNH stock crash three months before it happened: here's how he knew what was coming.

Five UnitedHealth Group insiders including new CEO Stephen Hemsley scooped up the health insurer’s beaten-down stock in ...

Health insurers continue to use algorithms to predict how long patients need intense care — and thus how much care is covered ...