US Pre-Market: Nasdaq Futures Drop 2.7% as Asia's Memory-Chip Rout Spreads (June 23, 2026)

Sentiment: bearish S&P 500 futures: -1.36% Nasdaq 100 futures: -2.74%

Nasdaq 100 futures fell 2.74% and S&P 500 futures lost 1.36% before the open on 23 June 2026, the second day of an AI selloff that has rotated from mega-cap software into memory chips. Marvell MRVL.US led the pre-market decline at 8.30%, with Micron MU.US down 7.69% and Western Digital WDC.US down 7.23% ahead of Micron's earnings on Wednesday after the close. Asia led overnight: South Korea's Kospi fell 9.99% and tripped a circuit breaker as Samsung and SK Hynix each shed about 12%.

What drove the overnight session

• Asia memory crash: Kospi -9.99% to 8,203.84, Kosdaq -7.94%, Nikkei -3.55% to 69,788.38. Samsung and SK Hynix, together more than half the Kospi's weight, each fell about 12%; in Tokyo, Kioxia dropped 15.1% and SoftBank 10.1%. Memory chips led the selling, and US memory names opened lower.
• Fed rate-hike repricing: Futures now price about 50 basis points of US rate increases by December under new Chair Kevin Warsh, up from a single 25 bp move priced two weeks ago. Rising rate expectations weigh most on the highest-multiple AI names, and the US 10-year sits near 4.51%.
• Monday's mega-cap drop: Alphabet GOOGL.US fell 4.99% on Monday after Nobel laureate John Jumper left Google for AI startup Anthropic, while Microsoft MSFT.US lost 3.18% and Broadcom AVGO.US 4.67%. The selling widened across the chip sector on Tuesday.

Where Wall Street left off (Monday close)

• Nasdaq Composite: 26,166.60 (-1.32%)
• S&P 500: 7,472.79 (-0.37%)
• Dow: 51,712.71 (+0.29%)
• Russell 2000: 3,004.40 (+0.83%)
• VIX: 19.83 (+14.75%)

Monday's selling was concentrated in mega-cap tech: the Dow and small caps closed green while the Nasdaq slipped. Tuesday's futures show that concentration deepening, with the Nasdaq 100 contract down 2.74% against a 0.50% drop in Dow futures.

Overnight Asia and Europe

• Kospi: 8,203.84 (-9.99%), circuit breaker triggered
• Nikkei: 69,788.38 (-3.55%), a one-week low
• Kosdaq: 891.52 (-7.94%)
• Hang Seng: 23,336.28 (-1.82%)
• Shanghai Composite: 4,106.25 (-1.37%)
• Taiwan Taiex: 47,100.65 (-1.34%)
• STOXX 600: 633.24 (-0.94%)
• DAX: 24,850.07 (-1.15%)
• FTSE 100: 10,385.70 (-0.50%)

Semiconductor names led the Asian decline, and European tech followed Asia lower. Defensive sectors held the STOXX 600 loss under 1% and limited the FTSE 100 to 0.50%.

Pre-market movers

• MRVL.US -8.30%, MU.US -7.69%, WDC.US -7.23% and STX.US -7.17% lead the memory and storage decline ahead of Micron's results.
• AMAT.US -6.98%, LRCX.US -6.98%, KLAC.US -6.38% and TER.US -6.35% drag the chip-equipment group; the VanEck Semiconductor ETF SMH.US is down 5.32%.
• INTC.US -7.05% and AMD.US -6.43% extend the selling, while NVDA.US -2.47% and AVGO.US -3.85% fall less.
• IBM.US +4.21%, MSFT.US +1.08% and Chubb CB.US +1.18% rise as money rotates toward value and defensives.

US economic calendar today (ET)

• 9:45am ET: S&P Global Flash PMIs for June (manufacturing, services, composite)
• 10:00am ET: Richmond Fed Manufacturing Index
• 1:00pm ET: 2-year Treasury note auction

There is no 8:30am ET data today. The week's heavier releases (third-estimate Q1 GDP, durable goods, jobless claims and the PCE deflator) all land Thursday.

What to watch

• Micron MU.US reports Wednesday after the close, and the whole memory complex is trading off that event.
• The gap between Nasdaq futures (-2.74%) and Dow futures (-0.50%) shows whether the selloff stays in tech or broadens.
• Treasury yields and any Fed commentary into the 50 bp rate-hike repricing, with the 10-year near 4.51%.

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