Tech shares turbocharged by Nvidia's stellar earnings

Nvidia's stronger-than-expected results and a fiscal fourth-quarter sales guide of $65 billion (vs. analysts' $61.66 billion estimate) revived investor confidence in AI hardware on Wednesday, sending its shares higher and sparking a broad rally in Asian tech names; TSMC rose 3.6%, SK Hynix more than 4%, Samsung 4.5%, Advantest jumped 9%, SoftBank and Tokyo Electron climbed 4–5%, while Taiwan and South Korea indexes gained over 2% and Japan's Nikkei reclaimed 50,000 after a 3% advance. The move eased recent market anxieties about an AI infrastructure bubble and stretched tech valuations, underpinning renewed demand for chip and data-center suppliers as cloud giants continue to invest heavily in AI capacity. However, the article notes lingering investor scrutiny over the scale of AI spending and accounting practices such as extended depreciation of compute gear, leaving some uncertainty about sustainability of the rally.

Analysis

Nvidia delivered accelerating revenue growth and an above-consensus fiscal fourth-quarter sales guide of $65 billion +/-2% versus analysts' $61.66 billion estimate, and its stock rose about 5% in extended trading. The beat catalyzed a broad Asian technology rally: TSMC rose 3.6%, SK Hynix more than 4%, Samsung Electronics 4.5%, Advantest jumped 9%, SoftBank and Tokyo Electron gained roughly 4–5%, Taiwan and South Korea indexes advanced over 2%, and Japan's Nikkei reclaimed the 50,000 level on a >3% move.

The guidance and commentary materially eased near-term fears of an AI infrastructure bubble by signaling sustained demand for chips and data-center hardware, and Reuters highlights ongoing multibillion-dollar investment from cloud incumbents such as Microsoft and Amazon that underpin supplier order books. Market participants had entered earnings with fragile sentiment after recent tech sell-offs and headline-driven position reductions, so Nvidia's surprise restored risk appetite toward AI-exposed names.

Key risks remain that could limit the rally's durability: stretched tech valuations and recent selling by prominent investors, plus investor scrutiny that cloud providers may be extending depreciation lives for AI compute gear—potentially inflating reported earnings. The sustainability of positive momentum therefore depends on continued cloud capex execution, supply-chain fulfillment by suppliers like TSMC and SK Hynix, and transparency around accounting for AI infrastructure spend.

Key Decisions for Investors

• Consider tactically adding exposure to high-quality AI supply-chain beneficiaries (NVDA, TSMC, SK Hynix, select equipment suppliers) on disciplined pullbacks to capture demand-driven upside,
• Trim or hedge near-term positions after the sharp run-up given stretched valuations and recent volatility; use partial profit-taking or options protection to manage downside,
• Monitor Nvidia's actual fiscal Q4 results versus its $65 billion guide, cloud-capex announcements from Microsoft and Amazon, and disclosures on depreciation policies as key triggers to increase or reduce exposure