 The S&P and NASDAQ both seeing their largest weekly declines in three months. That software issue stemmed from an update by cybersecurity firm CrowdStrike, which contained a bug. CrowdStrike pulled the update, but many businesses are still recovering, including airlines, which are reporting heavy delays. CrowdStrike shares are down 9%, adding to an already bad day for the company. Among those benefiting from CrowdStrike's woes, rivals like Palo Alto Networks, whose stock is up more than 2%, and SentinelOne, up 5.5%.