Wall Street set for mixed open, CrowdStrike slumps after global outage

U.S. stock index futures pointed to a mixed open in choppy trading on Friday as investors paused after a two-day selloff and assessed the impact of a sweeping global tech outage that weighed heavily on CrowdStrike shares.

An update to one of CrowdStrike's products appeared to be the trigger for the cyber outage that affected customers using Microsoft's Windows Operating System, disrupting businesses across sectors and sending the cybersecurity firm's shares down 12.6% in premarket trading.