Check out which companies are making headlines ahead of the bell Friday:
BlackBerry—The smartphone maker reported a much smaller-than-expected quarterly loss even as its sales continued to decline. Shares rallied in pre-open trading.
Zynga—Billionaire Steven Cohen raised his stake to 5.3 percent from 2.2 percent in the video-game publisher, according to a regulatory filing. Shares gained in pre-open trading.
Wal-Mart—The retail giant filed a $5 billion lawsuit against Visa earlier this week, saying the credit card company passed along unreasonable fees when shoppers used credit or debit cards at its stores, according to a Wall Street Journal report.