X trending discussion on AI capital expenditure (September 18, 2026). Multiple analysts discuss Federal Reserve rate hikes, semiconductor sector positioning, and shifting AI investment cycles from data center infrastructure toward Physical AI applications. Market consensus suggests selective semiconductor investment opportunities beyond traditional GPU/HBM plays as AI capex growth moderates from 90% to 35% annually.
A Korean financial analyst discusses September 2026 market dynamics driven by AI capital expenditure expansion and Middle Eastern energy supply shocks, which are simultaneously pushing up long-term US interest rates and inflation expectations despite stable equity prices. The analysis emphasizes that AI fundamentals remain strong but valuation pressures are intensifying as capital costs rise, making the correlation between oil prices and 10-year Treasury yields the critical market indicator going forward.