Key Takeaways:
Index snapshot: Dow -0.21% | S&P 500 -0.52% | Nasdaq -1.13%
The Nasdaq Composite fell 1.13% at the open on August 18 as memory and optical communications stocks gave back gains from a prior-session rally.
Goldman Sachs projects global autonomous AI monthly token consumption will reach 120 quadrillion by 2030, roughly 24 times early-2026 levels, according to the bank's research, supporting the long-term demand thesis for memory chips.
The pullback follows a session where SanDisk surged 8.88% and Western Digital gained 5.35% after Elon Musk endorsed the memory sector on X, calling memory the core bottleneck in the era of autonomous AI. In pre-market trading, Coherent and Western Digital fell more than 7%, while SanDisk, Lumentum, Seagate, and Credo dropped over 6%. Marvell, Micron, and SK Hynix each slid more than 5%. Hesai dropped over 12% following its second-quarter earnings release.
The selloff coincided with the 30-year Treasury yield rising to a near 19-year high and oil prices holding elevated levels, with WTI crude near $84.10 and Brent near $91. Gold pulled back slightly to around $4,390, while Bitcoin held near $64,200. Markets await the Federal Reserve's July meeting minutes on Wednesday and U.S. housing data due later today.
Profit-taking after Musk-fueled rally
The memory sector's prior strength was tied directly to Musk's public comments on X, where he said memory will be the core bottleneck in the era of autonomous AI and voiced optimism on Micron, SanDisk, and SK Hynix. The rapid run-up in the sector — SanDisk gained 8.88% in the prior session alone — prompted profit-taking in pre-market trading, leading to a collective pullback in related stocks.
The synchronized weakness in Hong Kong-listed chip stocks confirmed that risk appetite for the semiconductor sector has cooled across Asia-Pacific markets. Hua Hong Semiconductor fell more than 7%, while Montage Technology and GigaDevice dropped over 6%.
AI hardware chain under pressure
Beyond memory and optical names, the broader AI hardware complex weakened. Nvidia fell about 2% in pre-market trading, AMD dropped over 3%, Marvell Technology slid nearly 6%, and Super Micro Computer declined nearly 4%. The weakness tracked Nasdaq futures, which fell nearly 1%, indicating that tech stocks overall face adjustment pressure.
The fundamental industry logic for memory chips has not shifted. Demand for high-bandwidth memory and high-capacity storage driven by AI computing expansion continues to grow, and Musk's "memory constraint" thesis remains relevant at the industry level. The current pullback reflects technical adjustment and profit-taking rather than a reversal of fundamentals.
This article is for informational purposes only and does not constitute investment advice.
