AI Infrastructure Regains Momentum While Softer Economic Data Reduces Pressure on the Fed

US equities ended a relatively eventful week with only modest changes, but the subdued headline performance masked several important developments beneath the surface. Inflation data were generally reassuring, AI infrastructure stocks regained momentum, small-cap equities continued to participate, while renewed US-Iran tensions pushed oil prices sharply higher.

For the week, the S&P 500 gained 0.4%, its third consecutive weekly advance, while the Nasdaq Composite edged 0.1% higher. The Dow Jones Industrial Average declined 0.6%, while the Russell 2000 gained 1.1%. The S&P 500 reached another record during the week before closing Friday at 7,785.76.

The relatively stronger performance of smaller companies is noteworthy. Together with broader participation outside the largest technology companies, it suggests that investors have not abandoned risk despite elevated valuations and continuing geopolitical uncertainty.

Inflation Gives the Federal Reserve More Room

Inflation was one of the week’s principal market drivers.

July consumer inflation came in slightly softer than anticipated, helping reduce concerns that the Federal Reserve would need to resume raising interest rates in September. The reaction was particularly supportive for rate-sensitive areas of the market, with real estate and technology among the stronger sectors following the release.

The subsequent producer-price data also did little to materially revive tightening expectations.

By the end of the week, markets were assigning approximately a 70% probability that the Federal Reserve would leave rates unchanged in September.

This represents an important shift in the macro backdrop. Only recently, higher oil prices and persistent inflation had increased concerns over another rate increase. Softer inflation combined with July’s weak employment report has now reduced that pressure.

However, the situation remains finely balanced. Inflation has moderated, but it has not disappeared, and energy prices are again moving in the opposite direction.

The Consumer Emerges as the Next Question

Friday introduced another variable when US retail sales unexpectedly declined.

The data contributed to lower expectations for further monetary tightening, but the equity-market response was restrained. Rather than interpreting weaker consumption purely as favourable for interest rates, investors also began considering what softer demand could mean for economic growth and corporate revenues.

That distinction matters.

A gradual economic slowdown accompanied by moderating inflation would represent a relatively favourable environment for equities. A more pronounced deterioration in consumer spending would be considerably less supportive, particularly for consumer discretionary companies.

The coming weeks should therefore provide an important indication of whether July’s weakness represents normal monthly volatility or the beginning of a broader slowdown in household demand.

AI Infrastructure Returns to Centre Stage

Technology remained one of the most important sources of market leadership, although this week’s strongest signals came increasingly from the infrastructure supporting artificial intelligence rather than simply the largest technology platforms.

CoreWeave rose sharply after reporting second-quarter revenue of approximately US$2.58 billion, more than doubling from a year earlier, while its revenue backlog reached approximately US$104 billion. The company also raised its capital expenditure plans, reinforcing expectations that spending on AI computing infrastructure remains exceptionally strong.

The positive read-through extended across data-centre and semiconductor-related companies. Nvidia and Micron advanced, while the Philadelphia Semiconductor Index gained strongly following the results.

Optical networking was another area of strength. Lumentum reported revenue growth of more than 100% year-on-year, supported by demand for higher-speed optical connectivity required by increasingly large AI data centres.

The picture was not uniformly positive. Coherent delivered strong earnings and guidance but its shares declined following the results, while Applied Materials also fell despite exceeding earnings expectations.

This reinforces an increasingly familiar pattern: demand across the AI infrastructure ecosystem remains strong, but valuations already discount substantial future growth. Companies therefore need not merely to meet expectations, but increasingly to exceed them.

Oil Reintroduces Geopolitical Risk

The principal counterweight to the otherwise constructive macro backdrop came from energy markets.

Brent crude ended the week around US$88.50 per barrel, rising approximately 6% over the week, as tensions between the United States and Iran escalated. Washington raised the possibility of maintaining an indefinite naval blockade of Iran, increasing concerns over potential disruption to energy flows through the Strait of Hormuz.

The Strait remains strategically significant because approximately 20% of global oil and LNG shipments transit the waterway.

Energy consequently became one of the stronger areas of the equity market.

The more important implication, however, is macroeconomic. Persistently higher oil prices could slow the decline in inflation, weaken household purchasing power and complicate the Federal Reserve’s policy decisions.

For markets, oil therefore remains both a geopolitical variable and an inflation variable.

What to Watch Next (Beginning 17 August 2026)

The coming week shifts attention away from major inflation releases and towards Federal Reserve communication, housing data and corporate earnings.

The minutes from the Federal Reserve’s July meeting will be closely examined for the degree of concern among policymakers regarding inflation and whether additional tightening remains under consideration. Following the recent employment, CPI and retail-sales data, investors will be looking for evidence of how the Fed balances weaker growth indicators against still-elevated inflation.

US housing starts are scheduled for 18 August, while purchasing managers’ surveys and industrial-production data will provide additional information on underlying economic activity.

Corporate attention will also turn towards the consumer, with Walmart, Target and Home Depot among the major retailers due to report. Their results and guidance may be particularly important following the latest weakness in retail sales.

The market remains constructive, but the risk-reward equation is becoming more nuanced.

Inflation is moderating, earnings remain strong and AI investment continues at an extraordinary pace. At the same time, oil is approaching US$90, consumer data have softened and the major indices remain close to record levels.

The next phase of the rally may therefore depend less on multiple expansion and increasingly on whether earnings growth can continue to justify already elevated expectations.