NYSE and Nasdaq Arca to Extend Trading Hours to 23 Hours Daily Starting December 6, 2026

The Nasdaq Stock Market and NYSE Arca are set to expand their trading hours to 23 hours per day, five days a week, effective December 6, 2026. This significant operational change will introduce an overnight trading session from Sunday through Thursday, 9 p.m. to 4 a.m. ET, with a mandatory one-hour pause between 8 p.m. and 9 p.m. ET. Companies are advised to consider the implications for timing material announcements and potential modifications to transaction documents.