Qorvo stock is soaring Friday after activist investor Starboard Value disclosed a new stake in the Apple supplier. Here's what investors need to know.

Starboard Value has built a 7.7% stake in Qorvo , the chipmaker revealed in a filing on Friday, as the activist investor looks to boost the company's weak share price.

Qorvo Inc. (NASDAQ:QRVO) gained 7.2% in premarket trading after activist Starboard Value disclosed a stake in the chipmaker. Starboard reported owning a 7.7% stake in Qorvo, a supplier of radio frequency chips to Apple and Samsung,