US equities presented a split picture on Thursday, with the Dow Jones Industrial Average sliding while the broader S&P 500 touched an intraday record. The divergence, however, was less about investor sentiment and more about the mechanics of index construction.
At 12:04 EDT, the Dow was down 96 points, or 0.18%, while the S&P 500 advanced 0.43%. The Nasdaq Composite also gained 0.58%. The gap between the Dow and the S&P 500 stood at 0.61 percentage points, a notable discrepancy that highlighted the influence of price-weighting in the 30-stock Dow index.
Cisco's Plunge Weighs Heavily
The primary drag on the Dow was Cisco Systems (CSCO), which tumbled 9% after its earnings report. As a price-weighted index, the Dow gives more influence to stocks with higher share prices. Cisco's $10.77 decline translated into a roughly 64-point subtraction from the Dow, accounting for about two-thirds of the index's midday fall. In contrast, the S&P 500 and Nasdaq, which are weighted by market capitalization, were less affected by Cisco's slide.
Other Dow decliners included 3M (MMM), which fell $2.84, shaving about 17 points off the index. On the upside, Goldman Sachs (GS) and Microsoft (MSFT) initially provided support, with Goldman adding about 101 points earlier in the session and Microsoft contributing 41 points.
Chip Rally Lifts Broader Market
While Cisco dragged the Dow, the broader market benefited from strength in semiconductor stocks. Sandisk (SNDK) surged 15%, and Micron Technology (MU) advanced 5.6%, both helping to lift the PHLX semiconductor index by 1.8%. Notably, neither Sandisk nor Micron is a Dow component, underscoring how the index's composition can miss out on sector rallies.
Market breadth was positive, with advancers outpacing decliners by 1.78-to-1 on the New York Stock Exchange and 1.41-to-1 on the Nasdaq. The S&P 500 recorded 28 new 52-week highs and only one new low, indicating broad-based strength beneath the surface.
Macro Backdrop Supports Risk Appetite
Supporting the optimistic tone was the July Producer Price Index (PPI), which came in flat, with annual inflation easing to 4.7%. Prices for final-demand goods fell 0.7%, offsetting a 0.2% rise in services. This data reinforced expectations that the Federal Reserve will hold rates steady at its September meeting, with futures markets pricing in a 65% probability of no change.
Additionally, Brent crude oil declined 3%, helping to alleviate inflation concerns. These macro factors contributed to a favorable environment for risk assets, even as the Dow's price-weighted structure created a temporary drag.
Analyst Views
Market participants pointed to broadening earnings strength. Josh Chastant, managing director at GuideStone, noted, "We're starting to see broad-based earnings really pick up across sectors." He observed that value creation is expanding from data-center suppliers to companies developing AI models. Jefferies' Mohit Kumar reiterated an overweight recommendation on the AI sector, citing robust infrastructure earnings and ongoing capital expenditures.
Outlook and Risks
The Dow's intraday volatility reflects its sensitivity to individual stock moves. An early rally of 184 points, driven by Goldman Sachs and Microsoft, was erased by losses in Cisco and 3M. Despite encouraging inflation data and positive breadth, the index remains susceptible to further swings.
Risks include a potential recovery in Cisco shares before the close, which could narrow the divergence, and possible reversals in oil prices or Treasury yields. Intraday readings are subject to revision, and actual trading prices may differ from reported figures.
Investors will be watching the remainder of the session for clues on whether the Dow can close the gap with the S&P 500, and whether the price-weighted effect continues to distort the index's performance relative to the broader market.
