Memory stocks are getting a fresh boost on Thursday after an update from Apple . The tech giant sparked new momentum for one of the hottest trades of the year after outgoing CEO Tim Cook hinted that the supply crunch at the heart of this year's memory stock rally is still a major issue for hardware makers. "Unfortunately, price increases are unavoidable," Cook told The Wall Street Journal . "We're doing our best to mitigate the huge increases that are being passed to us, and we've been trying