Holiday Halt: S&P 500, Nasdaq to remain closed for Juneteenth today after busy 'triple witching' session

US equity and bond markets remained closed on Friday for the Juneteenth federal holiday, with NYSE and Nasdaq scheduled to reopen on Monday, June 22. The June quarterly triple witching derivatives expiration was advanced by one day to Thursday, June 18, compressing institutional trading, portfolio rebalancing and hedging activity into the final session before the holiday. The event comes during a week where investors also weighed Federal Reserve policy signals, geopolitical developments and economic data.