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Security software surged on AI-safety warnings while optics and chip-test names cratered, as the 10-year yield briefly topped 5% and oil pushed past $102.
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Astera Labs dropped 16.5% in an AI sector sell-off despite having no debt and $1.25 billion in cash. The author recommends buying the dip, citing the company's recent launches of PCIe 7 Aries chips and Orion rack-scale design, along with upcoming Q3 earnings on November 3rd. However, the stock trades at high multiples and depends on a few large customers, making it volatile.
Nvidia and Micron have benefited significantly from the AI infrastructure spending boom, with record revenues driven by demand for AI chips and memory. However, both stocks face substantial downside risk if tech giants reduce their AI investments. Nvidia's growth is heavily dependent on continued data center spending, while Micron operates in a cyclical memory business vulnerable to supply-demand imbalances. If AI spending slows, Nvidia appears better positioned to weather the downturn.
AMD stock has surged 164% in 2026 ahead of its Nov. 3 earnings report, but the author cautions against buying before the announcement. While AMD's AI accelerators and data center business show strong growth, the stock's 35x forward P/E ratio leaves no room for disappointment. The author recommends a gradual buying approach rather than a large position before earnings, noting that much of the easy gains have already been made.
Meta is raising up to $95 billion through stock offerings to finance its expanding AI infrastructure, with NVIDIA investing $3 billion. While the company's AI capabilities and advertising business offer long-term growth potential, concerns persist over negative free cash flow, rising capex ($135-145 billion), and record debt insurance costs. Analysts remain bullish with an average price target of $857.58, but valuation risks remain.
Susquehanna has increased its price target for Advanced Micro Devices, Inc. (AMD) from $620 to $650.
Broadcom and Taiwan Semiconductor Manufacturing (TSMC) are highlighted as two leading players in custom silicon for AI infrastructure. Broadcom designs ASICs for major tech companies like Alphabet, Meta, and OpenAI, with Q3 AI semiconductor revenue up 221% year-over-year. TSMC manufactures high-end chips and controls over 90% of the advanced AI chip market. Both stocks have delivered exceptional long-term returns, though they face recent valuation volatility amid AI industry concerns.