Live: Dow tumbles more than 600 points as oil prices rise and market sell-off hits most sectors [https://www.cnbc.com/2026/10/22/stock-market-today-live-update.html?__source=iosappshare%7Ccom.apple.UIKit.activity.CopyToPasteboard](https://www.cnbc.com/2026/10/22/stock-market-today-live-update.html?__source=iosappshare%7Ccom.apple.UIKit.activity.CopyToPasteboard)