Third Point criticized the company's board for having signed off on excessive executive pay packages and said it needs to cut costs.

Bath & Body Works' stock price had tumbled nearly 40% since January. It jumped nearly 6% in after-hours trading on news that Third Point is involved.

The hedge fund, which invests $12 billion in assets, most recently reached a settlement with Disney to add a new director to its board.

The news of the stake was revealed in a so-called 13D filing, a filing Third Point makes only rarely and one that signals the hedge fund may be laying the foundations for a proxy fight.

(Reporting by Svea Herbst-Bayliss; Editing by Aurora Ellis)

By Svea Herbst-Bayliss