Starbucks Corp (NASDAQ:SBUX) stock is up 2.5% to trade at $77 premarket, after The Wall Street Journal reported activist investor Starboard Value took a stake in the company to raise share value.The equity has been struggling since marking its worst day since 2020 back in May, after a lackluster earnings report. The 60-day moving average has also been a consistent level of pressure, guiding the shares to their July 16, two-year low of$71.55. While SBUX has since edged higher, it still carries a 21% year-to ...