Check out which companies are making headlines before the bell Friday:
Apple - The technology titan advanced in premarket trading after releasing an update to software that had glitches for its latest iPhones.
BlackBerry posted a smaller quarterly loss and its CEO projected the tech company would double its software revenue next year. Its shares edged higher in pre-market trading.
Finish Line - The seller of athletic wear dropped after reporting disappointing quarterly results.
Micron Technology - The manufacturer of computer-memory chips climbed after posting fourth-quarter revenue that topped expectations.
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