Summary · why it matters
Semiconductor stocks fell across the board in US, European and Asian markets after Anthropic CEO Dario Amodei sounded a warning over the pace of frontier AI development, while Bitcoin rose 3% to $79,400. In an essay published on September 12, Amodei called for cautious handling of the security and humanitarian risks posed by increasingly capable AI systems, a view echoed by OpenAI CEO Sam Altman and xAI CEO Elon Musk. The Philadelphia Semiconductor Index, made up of 30 US-listed semiconductor companies, plunged 5.9% in Monday trading. Arm Holdings fell 9.55%, Marvell Technology dropped about 7.4% to 7.5%, Intel fell 5.5% to 7% to close near $95.96, Micron Technology declined 5.25% to $924.90, Broadcom fell 4.77%, Advanced Micro Devices dropped 4.4% to $486.80, and Nvidia fell 3.36% to $210.96, shedding about $176.6 billion in market value. In Europe, ASM International fell 8.55% to 10%, BE Semiconductor dropped 7.03% to 8.4%, and ASML also declined more than 6%, losing about 33.6 billion euros in market value, while Infineon Technologies fell 7.7%. In Asia, SK Hynix's ADR dropped 7.6% and TSMC fell 1.2%. Bitcoin Japan CEO Phillip Lord noted that Bitcoin is not a hedge against AI but a hedge against disorder in the financial system, and that in a genuine liquidity shock Bitcoin and semiconductors would first fall together before diverging. He warned that policy decisions by the Federal Reserve, the Bank of Japan and the Bank of England could prolong pressure on AI-related stocks and Bitcoin if global liquidity tightens.
SK Hynix Inc
Taiwan Semiconductor Manufacturing Co. Ltd.
ASM International NV
ASML Holding N.V.
BE Semiconductor Industries NV
Intel Corporation
Micron Technology Inc
Advanced Micro Devices Inc
Arm Holdings plc American Depositary Shares
Broadcom Inc
Marvell Technology Group Ltd
NVIDIA Corporation
Bitcoin Japan Corporation
Infineon Technologies AG