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. Shares of the company rose over 8% in premarket trading.

Shares of Qorvo got a boost when it was learned that hedge fund Starboard Value has taken a 7.7% stake in the maker of radio frequency and power chips.

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