Swingfolio Daily — US Markets
US briefings — Tuesday, June 23, 2026
Pre-market setup and closing-bell recap for Tuesday, June 23, 2026. Observations only — no trade advice.
Tuesday, June 23, 2026
US Pre-Market: Nasdaq Futures Drop 2.7% as Asia's Memory-Chip Rout Spreads (June 23, 2026)
Nasdaq 100 futures fell 2.74% and S&P 500 futures 1.36% before the US open on 23 June 2026 as an AI selloff rotated into memory chips. Marvell, Micron and Western Digital dropped about 8% pre-market after South Korea's Kospi fell 9.99% and tripped a circuit breaker. The damage stayed concentrated in tech, with Dow futures down 0.50%.
US Close: Nasdaq Sinks 2.2% as Asia Memory-Chip Rout Hits Semis, Defensives Hold (June 23, 2026)
US stocks fell on June 23, 2026 as a memory-chip selloff that began in Asia, where South Korea's Kospi dropped 9.99% and tripped a circuit breaker, reached US semiconductors. The Nasdaq lost 2.21% and the S&P 500 1.44%, with the Philadelphia Semiconductor Index down 7.87%, while the Dow held near flat and seven of eleven sectors rose. FedEx and Cerebras both beat estimates after the close but fell on cautious guidance.