Dow, S&P 500, Nasdaq notch records on AI buzz even as government shutdown drags on

US stocks, including the Nasdaq, S&P 500, and Dow, reached new record highs on Thursday, primarily propelled by the AI trade as OpenAI's valuation soared to $500 billion, significantly boosting AI chipmakers like Nvidia. This market optimism persisted despite an ongoing US government shutdown and private labor market data indicating weak hiring plans, which reinforced investor expectations for a Federal Reserve rate cut. Key corporate developments included FICO's stock surge after announcing direct sales of credit scores to lenders, Tesla's decline post-record deliveries due to future performance concerns, and Berkshire Hathaway's $9.7 billion acquisition of Occidental Petroleum's chemical division.

Analysis

US equity markets reached new all-time highs, with the S&P 500 surpassing 6,700, primarily propelled by sustained enthusiasm for artificial intelligence. The key catalyst was OpenAI's valuation soaring to $500 billion following an employee share sale, which directly fueled a rally in AI-related semiconductor stocks, sending Nvidia (NVDA) to a record high and boosting shares of AMD, Broadcom, Samsung, and SK Hynix. This tech-driven optimism is currently overshadowing macroeconomic concerns, including an ongoing US government shutdown which, despite warnings of a potential GDP impact, has not yet perturbed markets. Concurrently, private labor market data from Challenger, Gray & Christmas indicates hiring plans are at their lowest since 2009, reinforcing the 'low hire, low fire' trend seen in the recent ADP report. This evidence of a softening labor market has solidified investor expectations for a Federal Reserve rate cut in October. Sector-specific dynamics reveal significant divergence; Fair Isaac (FICO) shares surged nearly 19% on its plan to sell credit scores directly to lenders, a move that severely impacted the stocks of credit bureaus TransUnion (TRU) and Equifax (EFX), which both fell over 10%. In contrast, Tesla (TSLA) shares declined despite reporting record Q3 deliveries, as investor focus shifted to future performance headwinds without the federal EV tax credit.

Key Decisions for Investors

• Given the powerful momentum in the AI sector, investors should maintain exposure to key beneficiaries like Nvidia (NVDA) and its supply chain partners, while remaining cognizant of elevated valuations and concentration risk highlighted by OpenAI's $500 billion valuation.
• The strategic shift by Fair Isaac (FICO) to sell directly to lenders presents a clear disruption; consider long positions in FICO while evaluating the downside risk and potential short opportunities in credit bureaus like TransUnion (TRU) and Equifax (EFX).
• Re-evaluate Tesla's (TSLA) forward-looking valuation, as the negative stock reaction to record deliveries indicates the market is now prioritizing future growth risks from the expiring EV tax credit over current operational performance.
• Monitor private labor market data closely, as the market's expectation for a near-term Fed rate cut is a critical support for current equity levels and could be repriced quickly upon the eventual release of delayed official government jobs data.