The S&P 500 index fell collectively, with CrowdStrike down more than 11%.

Shares Times reported on July 19, the US stock market closed lower. As of the close, the Dow Jones Industrial Average fell 377.49 points, or 0.93%, to 40,287.53 points; the Nasdaq Composite Index fell 144.28 points, or 0.81%, to 17,726.94 points; the S&P 500 Index fell 39.59 points, or 0.71%, to 5,505.00 points.

Most tech stocks fell on Friday. Intel fell more than 5%, Tesla fell more than 4%, TSMC, ASML fell more than 3%, Qualcomm, Micron Technology, UMC, Nvidia fell more than 2%.

Microsoft fell 0.74%. Microsoft said on Friday that the root cause of its 365 application and service outage has been resolved, but the lingering impact of the security outage continues to affect some customers. CrowdStrike, a US security giant, fell more than 11%. CrowdStrike George Kurtz posted a statement on Twitter saying, "This is not a security event or a cyberattack. The issue has been identified, isolated, and remediation deployed."