UBS: Semiconductors Enter Differentiation Phase, AI Crowded Trade Continues
According to Chaoxiang Research, UBS released a SemiBytes Flash Note on July 20, 2026, judging that the semiconductor sector is transitioning from a broad-based rally to a phase of severe divergence, while the AI-themed crowded trade continues.
The report covers five core topics. The release of Kimi K3 drives another upgrade in open-source model scale; longer context windows boost demand for HBM and storage, with NVIDIA being the biggest beneficiary.
Micron's cumulative free cash flow over the next few years is expected to exceed $400 billion; after the buyback ban is lifted, the theoretical buyback ratio could exceed 40%, which is not yet fully priced in by the market.
Divergence within the analog chip sector is intensifying; stocks with higher AI exposure have gained a 42x P/E premium, while valuations for stocks with automotive and industrial exposure remain near historical averages.
Position crowding data shows that Lam Research, Broadcom, Seagate, Micron, and AMD remain in a state of extreme long positioning crowding.