Jan 16 (Reuters) - Activist investor Starboard Value has

built a 7.7% stake in chipmaker Qorvo ( QRVO ), the Wall Street

Journal reported on Thursday, citing people familiar with the

matter.

The stake, valued at around $500 million, is expected to be

revealed in a securities filing Friday morning, according to the

report.

The details on Starboard's plans for Qorvo ( QRVO ) could not be

learned, the report added. Starboard and Qorvo ( QRVO ) did not

immediately respond to Reuters' requests for comment.

Starboard is seeking changes to boost the company's lagging

share price, the report said.

Starboard Value, run by Jeffrey Smith, is one of the world's

most prominent activist investors and has recently been pushing

for changes at firms including Pfizer ( PFE ), Rupert Murdoch's

News Corp ( NWSA ), and business software provider Salesforce ( CRM )

.