AI chip stocks swing wide on JPMorgan move, DeepSeek reports; Nasdaq +1.74%, semiconductor ETF volatile
Wall Street's record-setting start to the week saw the Dow close above 53,000 for the first time before renewed U.S.-Iran tensions erased those gains, leaving the blue-chip index down 0.5% for the week. The Nasdaq gained 1.74% for the week while the S&P 500 rose 1.23%, with both indexes finishing higher in four of the past five weeks.
Semiconductor stocks began the week strong with the VanEck Semiconductor ETF rising about 2% on Monday, but the rally quickly faded Tuesday after Samsung's results failed to impress and Reuters reported that China's DeepSeek is developing its own AI chip. Micron fell 4.7% while the ETF dropped almost 4%. The sector stabilized Wednesday helped by Apple's announcement of its $30+ billion Broadcom deal and Broadcom shares climbed nearly 5%.
On Friday, SK Hynix's US market debut opened at $170, roughly 14% above its $149 offering price, while Nvidia rose 4% to $210.96, its highest close in almost a month. The week exemplified chip-stock volatility: sentiment swings from AI infrastructure bullishness to supply-chain concerns (DeepSeek's chip, Samsung weakness) within hours. JPMorgan and Apple's anchor-customer moves provided a floor, but the sector's repricing around inference demand—not just training—continues.