Big Tech's AI infrastructure commitment is facing its first real earnings test — and the math is starting to raise questions.
The Philadelphia Semiconductor Index fell 10% last week — its steepest decline since April 2025 — as five hyperscalers collectively commit $770 billion USD to AI and off-balance-sheet shadow debt reaches $1.65 trillion USD. TSMC responded by locking in $265 billion USD for 12 US facilities despite 4-to-5 times higher construction costs, driven by North America representing 78% of Q2 revenue. China's Moonshot AI narrowed the frontier model gap to weeks but hit hard limits on compute and power, while Chinese state-owned enterprises deployed approximately 13 trillion won in equity support to stabilize domestic markets.
Sources:
Tech Stocks Rattled by AI Overheating Fears — Can Big Tech Earnings Restore Confidence? — Seoul Economic Daily, July 20, 2026
TSMC to Build 12 US Facilities Despite 4-5x Cost Premium — Seoul Economic Daily, July 20, 2026
China Narrows AI Gap to Weeks but Hits Wall on Chips and Power — Seoul Economic Daily, July 20, 2026
State-Owned Enterprises Deploy 13 Trillion Won as China's Market Defense — Seoul Economic Daily, July 20, 2026
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