A group of investors on Reddit are driving up the stock price of GameStop, going against Wall Street consensus that the video game retailer's days are numbered. WSJ's Gunjan Banerji explains how they're working together to make the stock soar - and make a lot of money for themselves in the process.

The U.S. job market made a remarkable comeback in 2020, after the pandemic wiped out more than 20 million jobs. But it wasn't nearly enough for a full recovery. WSJ's Eric Morath explains why many economists think that 2021 could be a record-setting year for job growth - and how that optimistic outlook could fall apart.

For years, two billionaire investors battled over the fate of Herbalife, a nutritional shake company. This month, we saw the final chapter of the strange saga that WSJ's David Benoit likens to "Mean Girls meets Wall Street."