Equity markets displayed significant divergence on July 28, 2026, as a broad retreat in semiconductor and AI-infrastructure stocks pulled the Nasdaq 100 to a 2.75-month low. While the Dow Jones Industrial Average climbed to a 1.5-week high, the technology-heavy index suffered a 1.12% decline, reflecting a rotation away from hardware-centric growth drivers.
The selloff in the semiconductor sector was widespread, with the iShares Semiconductor ETF (SOXX) dropping more than 5% to reach a 2.5-month trough. Specific hardware entities faced intense pressure, as Sandisk (SNDK) fell over 14%, while Western Digital (WDC) and Seagate Technology Holdings (STX) recorded losses exceeding 13% and 11% respectively. Micron Technology (MU) and Lam Research (LRCX) also saw valuations contract by more than 9% during the session.
Amkor Technology (AMKR) contributed to the bearish sentiment after providing third-quarter net sales guidance of $1.95 billion to $2.05 billion, which failed to meet the consensus estimate of $2.11 billion. This downward pressure extended to major industry players including Advanced Micro Devices (AMD), ARM Holdings (ARM), and Applied Materials (AMAT), all of which experienced declines exceeding 8%. Intel (INTC) and KLA Corp (KLAC) also saw their market capitalizations shrink by more than 6% as investors reassessed the sustainability of current AI-infrastructure capital expenditure.
Software providers offered a contrasting performance, with Workday (WDAY) leading gains in the Nasdaq 100 with a rise of over 7%. Thomson Reuters (TRI) followed with a 6% increase, while Autodesk (ADSK), Adobe (ADBE), and Salesforce (CRM) all posted gains exceeding 4%. This bifurcation suggests that capital is moving toward firms with stable, recurring revenue models that are perceived as less vulnerable to the cyclical volatility currently impacting hardware manufacturers.
Macroeconomic data further complicated the trading environment, as the Conference Board reported that the US July consumer confidence index fell by 1.4 points to 90.8. This unexpected decline, coupled with a 1% drop in crude oil prices, prompted a flight to safety that pushed the 10-year T-note yield down 3.4 basis points to 4.614%. The market is now pricing in a 30% probability of a 25-basis-point rate hike at the upcoming Federal Open Market Committee meeting.
Earnings reports provided a buffer for the broader market, with 86% of the 145 S&P 500 companies that have reported second-quarter results beating analyst expectations. Coca-Cola (KO) and Sherwin-Williams (SHW) both saw shares rise after raising their full-year guidance, demonstrating the resilience of consumer-facing sectors. Bloomberg Intelligence forecasts suggest that second-quarter earnings may increase by 23%, with AI infrastructure spending expected to drive nearly 60% of the S&P 500’s earnings-per-share growth.
The current volatility highlights a fundamental shift in how institutional investors evaluate the AI supply chain. While previous quarters were characterized by unchecked optimism regarding hardware deployment, the market is now demanding concrete evidence of return on investment from the massive capital outlays directed toward AI infrastructure. This transition marks a departure from the speculative phase of the AI cycle toward a period of rigorous financial scrutiny.
Geopolitical tensions continue to influence commodity prices and, by extension, inflation expectations. The ongoing blockade of Iranian oil shipments and the disruption of transit through the Strait of Hormuz remain critical variables for energy markets. As the East-West pipeline becomes a primary export route for Saudi crude, any further escalation in the Red Sea could introduce new supply-side shocks that would complicate the Federal Reserve’s interest rate trajectory.
Investors remain focused on upcoming earnings reports from megacap technology firms, including Amazon.com, Meta Platforms, and Microsoft. These results will serve as a litmus test for whether the current hardware-centric correction is a temporary adjustment or a broader revaluation of the technology sector’s growth prospects. Market participants will also monitor the outcome of the two-day FOMC meeting for signals regarding future monetary policy adjustments.