According to Chaoxiang Research, UBS released the SemiBytes Brief on July 20, 2026, concluding that the semiconductor sector is transitioning from broad-based gains into a period of sharp divergence, with the AI-driven rally continuing to gain momentum. The report covers five core themes. The release of Kimi K3 has further expanded the scale of open-source models, with longer context windows driving increased demand for HBM and memory, benefiting NVIDIA the most. Micron’s cumulative free cash flow over the next several years is projected to exceed $400 billion; following the lifting of the buyback ban, its theoretical buyback ratio could surpass 40%, a prospect not yet fully priced in by the market. Within the analog chip segment, internal differentiation is intensifying: stocks with higher AI exposure have gained a 42x P/E premium, while those with exposure to automotive and industrial markets remain near historical valuation averages. Positioning data indicate that Lam Research, Broadcom, Seagate, Micron, and AMD remain in a state of extreme long positioning congestion.
UBS: Semiconductor Sector Enters Divergence Phase as AI Rally Continues
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Summary
UBS notes that the semiconductor sector is entering a consolidation phase, with gains narrowing and divergence increasing. The AI rally remains strong, driven by Kimi K3 boosting HBM demand and favoring NVIDIA. Micron could generate over $400 billion in free cash flow, with buybacks potentially reaching 40% after restrictions are lifted. The analog chip sector shows a 42x P/E premium for AI-exposed stocks, while industrial and automotive-linked names remain near average valuations. Positioning data reveals heavy long positions in Lam Research, Broadcom, Seagate, Micron, and AMD, with key levels to monitor at support and resistance.
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