The Week in Markets: What Earnings and Economic Data Have Changed

Inflation has complicated the interest-rate outlook

The most consequential economic development came on Wednesday, when the US Bureau of Labor Statistics reported that consumer prices increased by 0.6% in September, bringing annual inflation to 3.7%, compared with 3.4% in August. The acceleration was driven substantially by energy costs, with gasoline prices increasing by 9.1% during the month and accounting for more than half of the increase in the headline index. Nevertheless, the figures also revealed continued price pressures elsewhere in the economy, complicating the argument that inflation is being driven exclusively by temporary movements in energy markets.

The official September Consumer Price Index report showed that core inflation, excluding food and energy, increased by 0.3% during the month and 2.6% over the preceding twelve months. Shelter costs rose by 0.4%, while price increases were also recorded across several service categories. Although the distinction between headline and underlying inflation remains important, the report provided insufficient evidence of a decisive return towards price stability.

Thursday's producer-price figures reinforced those concerns. According to the Bureau of Labor Statistics' September Producer Price Index release, final-demand prices increased by 1.3% during the month, the largest monthly rise since March 2022, bringing annual producer-price inflation to 6.3%. Energy again contributed significantly, with producer gasoline prices increasing by 20.3%, but services prices also rose by 0.8%, indicating that the increase in costs was not confined to the energy sector.

The significance of these releases extends beyond the immediate inflation figures. Producer prices influence the costs faced by businesses, and sustained increases can place pressure on operating margins when companies are unable to pass those costs through to customers. Where businesses possess sufficient pricing power, higher costs may instead be reflected in consumer prices, potentially prolonging inflation and complicating the Federal Reserve's efforts to restore price stability.

For investors, the relationship between inflation and corporate profitability is therefore more nuanced than a simple expectation that higher prices will reduce earnings. Companies with differentiated products, strong customer relationships and relatively limited capital requirements may be better positioned to protect their margins, while businesses operating in competitive markets or relying heavily on external financing may face greater pressure. The eventual effect depends on the balance between demand, pricing power, input costs and the financial structure of the business.

The monetary policy implications are equally important. The Federal Reserve's September meeting minutes confirm that policymakers had already increased the target range for the federal funds rate to 3.75–4.00%, reflecting concern about inflation remaining above the central bank's objective. The latest price data have reinforced the possibility that restrictive monetary conditions may need to persist, although the timing and extent of any further tightening remain uncertain.

Market expectations have consequently become more sensitive to individual economic releases. Following Thursday's data, Reuters reported that interest-rate futures implied approximately a 73% probability of the Federal Reserve leaving rates unchanged at its forthcoming October meeting. That expectation should not be confused with confidence that inflation is under control; rather, it reflects the distinction between the immediate policy decision and the possibility that rates remain elevated for longer than previously anticipated.

This distinction matters for equity valuations because interest rates influence both the cost of financing corporate investment and the present value assigned to future earnings. Businesses expected to generate substantial cash flows many years from now can be particularly sensitive to changes in discount rates, even when their commercial prospects remain attractive. The week's inflation releases have therefore challenged not only assumptions about monetary policy, but also the valuations attached to companies whose investment cases depend heavily on long-term growth.

Bank earnings reveal resilience beneath market uncertainty

The opening stages of the third-quarter earnings season have provided a more constructive assessment of current economic activity. Several major US banks reported substantial profitability, supported by trading activity, lending and client demand for financial services. The results suggest that financial activity remains resilient despite elevated interest rates, although the performance of individual businesses has varied considerably.

JPMorgan Chase reported third-quarter net income of $15.3 billion, equivalent to $5.57 per share, compared with $14.4 billion and $5.07 per share a year earlier. According to its official third-quarter earnings release, managed revenue increased by 8% to $50.9 billion, while average loans and deposits increased by 10% and 8% respectively. The bank also reported a 15% increase in markets revenue, supported by particularly strong activity in equities.

The distinction between reported and adjusted performance is relevant. JPMorgan's results included $658 million of net investment securities losses, equivalent to approximately $498 million after tax, reducing reported earnings per share by $0.18. Excluding that item, the bank reported earnings of $5.75 per share, demonstrating how investment-related losses can influence headline profitability without necessarily changing the underlying performance of its principal operating businesses.

Goldman Sachs delivered particularly strong results from its trading operations. In its third-quarter earnings announcement, the company reported net revenue of $18.68 billion and net earnings of $5.29 billion, equivalent to $17.01 per share. Revenue increased by approximately 23% compared with the previous year, supported by a substantial improvement in equities trading and continued demand for investment banking services.

The performance illustrates how periods of market uncertainty can create opportunities for financial institutions with substantial trading and advisory operations. Increased volatility can encourage clients to adjust portfolios, hedge exposures and undertake transactions, supporting fee income even when the broader investment environment becomes less predictable. However, the benefits are not necessarily permanent, and exceptionally strong trading results should not automatically be extrapolated into future quarters.

Morgan Stanley's results reinforced the importance of this distinction. The company reported third-quarter revenue of $20.3 billion, compared with $18.2 billion a year earlier, while net income reached $4.9 billion. Equities trading revenue increased by 41% to approximately $5.8 billion, contrasting with a 7% decline in fixed-income trading revenue. Its wealth management business also reported record quarterly revenue of approximately $9.1 billion and attracted $232 billion of net new assets.

The combination of strong equities trading and wealth management activity provides evidence of continued client engagement, but it also reveals differences in how market conditions influence financial businesses. Trading revenue can benefit from volatility, while wealth management profitability is supported by asset values, client flows and recurring fees. A prolonged decline in financial markets could therefore produce a different earnings environment even if transaction activity initially remains elevated.

Citigroup offered further evidence of resilience, reporting third-quarter revenue of $23.8 billion and net income of $5.2 billion, compared with $22.1 billion and $3.8 billion respectively in the previous year. Its Services business recorded revenue growth of 15%, while the bank reported continued progress across wealth management and institutional activities. However, the year-on-year comparison also benefited from the absence of a substantial goodwill impairment recorded in the corresponding period of 2025.

Taken together, the bank results suggest that the financial system continues to support substantial commercial activity. Lending growth, client deposits and demand for trading services provide little immediate evidence of a broad contraction, although these indicators are backward-looking and do not eliminate the possibility that higher financing costs will eventually affect borrowing demand or credit quality.

The more important question is whether the resilience evident in current earnings can persist if monetary conditions remain restrictive. Higher rates may support certain forms of banking income, but they can also increase borrowing costs, influence asset valuations and create pressure on customers whose finances are more sensitive to interest rates. The week's results therefore provide reassurance about current operating conditions without resolving the longer-term uncertainty surrounding economic growth.

Semiconductor results strengthen the industrial case but challenge valuations

The semiconductor industry has delivered some of the week's most important corporate disclosures, offering substantial evidence that investment in artificial intelligence infrastructure remains exceptionally strong. Yet the market response has been notably cautious, suggesting that investors are increasingly distinguishing between the strength of current demand and the valuations assigned to businesses expected to benefit from it.

ASML reported record third-quarter sales of €11.66 billion, compared with €9.33 billion in the preceding quarter, while its gross margin increased from 54.0% to 57.5%. Net income reached €4.96 billion, and management increased its full-year revenue outlook to between €44 billion and €45 billion. These figures, published in the company's 14 October earnings release, demonstrate the strength of demand for the sophisticated manufacturing equipment required to produce advanced semiconductors.

Perhaps more significant was management's assessment of future manufacturing capacity. ASML indicated that customers continue to increase their short- and medium-term equipment demand forecasts, with some expressing interest in orders extending into 2029 and 2030. The company now expects its currently planned supply for 2027 and 2028 to be insufficient to meet customer requirements, prompting consideration of further capacity expansion.

These statements provide important evidence about the potential duration of the semiconductor investment cycle, although they also require careful interpretation. Customer forecasts and expressions of interest are not equivalent to binding purchase commitments, and the commercial value of future demand will depend on production capacity, manufacturing execution and the profitability of the equipment supplied. The opportunity is substantial, but the financial returns remain dependent on how effectively that demand can be converted into revenue and cash generation.

TSMC's results, published on Thursday, reinforced the strength of advanced semiconductor manufacturing. According to its official third-quarter earnings announcement, revenue increased by 50.9% year on year to NT$1.494 trillion, while net income rose by 68.7% to NT$763.06 billion. Gross margin reached 66.4%, and technologies at seven nanometres and below accounted for 79% of wafer revenue.

The company's outlook also pointed towards continued expansion. Management forecast fourth-quarter revenue of between $52.3 billion and $54.3 billion, with a gross margin of 65–67%, supported by demand for advanced manufacturing technologies and the increasing contribution from its two-nanometre process. These are management forecasts rather than completed financial results, but they indicate that TSMC expects the current demand environment to remain strong through the remainder of the year.

The results are particularly relevant because TSMC occupies a central position within the semiconductor manufacturing ecosystem. Its ability to produce advanced processors at scale influences the commercial opportunities available to chip designers, memory manufacturers and companies supplying packaging and supporting technologies. Strong demand for its most sophisticated manufacturing processes therefore provides evidence extending beyond the performance of a single company.

Nevertheless, the market reaction demonstrates that impressive financial results are not necessarily sufficient to support elevated valuations. The Philadelphia Semiconductor Index declined for a seventh consecutive session on Thursday, even as the broader US market recovered. Reuters reported that investors remained concerned about the sustainability of AI infrastructure spending, particularly among businesses relying on substantial external financing.

The distinction between structural demand and investment returns is central to understanding this reaction. Semiconductor manufacturers may continue reporting strong revenue growth while their share prices experience considerable volatility if expectations about future profitability, capital requirements or valuation multiples change. A business can perform exceptionally well and still disappoint shareholders when its initial valuation assumes an even more favourable outcome.

The current investment cycle also presents a particular challenge because capacity expansion is occurring across several interconnected industries. Advanced processors require memory, manufacturing equipment, packaging, networking and substantial supporting infrastructure, creating opportunities for numerous suppliers. Yet investment undertaken to address present shortages can eventually alter the balance between supply and demand, potentially reducing pricing power even if the underlying market continues growing.

The semiconductor results have therefore strengthened the evidence supporting the industrial expansion of AI infrastructure without resolving the financial questions surrounding its eventual profitability. Investors are increasingly being asked to assess not only how much computing capacity will be required, but also how efficiently that capacity can be financed, deployed and converted into sustainable economic returns.

The market reaction reveals a changing balance of risks

The relationship between inflation, interest rates and technology valuations became particularly visible in Wednesday's trading session. Following the consumer-price report, the Nasdaq Composite declined by 1.88%, while the S&P 500 fell by 1.11%. Semiconductor and AI-related businesses experienced substantial selling pressure as investors reconsidered the implications of higher financing costs for companies undertaking large infrastructure investment programmes.

Thursday brought a more differentiated response. Although technology shares remained under pressure, the broader market recovered as investors shifted towards businesses perceived to be less dependent on the continued expansion of AI-related capital expenditure. Healthcare and materials led the advance, while the Dow Jones Industrial Average outperformed the Nasdaq by a considerable margin.

The movement suggests that investors are not necessarily abandoning equities or rejecting the prospect of continued corporate earnings growth. Rather, they appear to be reassessing where the balance between profitability, valuation and financial risk is most attractive. Companies with substantial existing cash flows and less demanding investment requirements may become relatively more appealing when borrowing costs rise and uncertainty surrounding future returns increases.

Bond markets offered another perspective. Despite Thursday's stronger-than-expected producer-price figures, the benchmark ten-year US Treasury yield declined by approximately 12.6 basis points to 5.064%, according to Reuters' global market report. The movement illustrates how concerns about future economic growth and financial conditions can influence bond yields even when current inflation data would ordinarily support expectations of tighter monetary policy.

The distinction is important because bond yields reflect more than expectations for the next central bank decision. They incorporate assessments of future interest rates, inflation, economic growth and the compensation investors require for holding longer-dated debt. A decline in yields following stronger inflation data may therefore indicate that investors are placing greater weight on the possibility that restrictive financial conditions will eventually weaken economic activity.

Geopolitical developments continue to complicate that assessment. Disruption to energy supplies and uncertainty surrounding shipping routes in the Middle East have contributed to elevated oil prices, increasing costs for businesses and households while creating additional uncertainty about the outlook for inflation. Brent crude settled at approximately $105.92 per barrel on Thursday, reflecting the continuing importance of energy markets to the broader economic environment.

For investors, the interaction between energy prices and monetary policy is particularly challenging. Higher energy costs can increase inflation while simultaneously reducing household purchasing power and placing pressure on businesses whose margins are sensitive to input prices. Central banks must therefore assess whether price pressures are likely to persist without unnecessarily weakening economic activity through restrictive policy.

These considerations help explain why markets have become increasingly sensitive to both economic releases and corporate commentary. The issue is not simply whether inflation remains elevated or whether earnings continue growing, but how those developments influence one another. A resilient economy may support corporate profitability while also allowing inflation to remain persistent, potentially delaying the return to more favourable financing conditions.

The UK economy offers a different perspective

The week's economic releases also provided useful information about conditions outside the United States. In the United Kingdom, the Office for National Statistics reported that monthly GDP increased by 0.1% in August, following growth of 0.4% in July. Over the three months to August, however, the economy expanded by 0.7%, reflecting a stronger underlying trend than the latest monthly figure might suggest.

The ONS monthly GDP release, published on 15 October, showed that services output was unchanged during August, while production increased by 0.8% and construction declined by 0.2%. The figures illustrate the uneven composition of economic growth, with different sectors experiencing markedly different conditions.

The distinction between monthly movements and broader trends is important when assessing the economic outlook. Individual GDP releases can be influenced by temporary changes in production, consumer activity and business investment, while revisions to earlier estimates may alter the interpretation of recent performance. Investors should therefore avoid treating a single monthly figure as definitive evidence of either economic strength or deterioration.

For UK markets, the interaction between domestic growth, inflation and international financial conditions remains particularly relevant. Businesses with substantial overseas earnings may be influenced more heavily by global demand and exchange-rate movements than by domestic economic activity, while companies focused on UK consumers and businesses are more directly exposed to local spending, financing costs and confidence.

The latest GDP figures provide evidence of continued economic expansion, but they do not remove the uncertainty surrounding the outlook. The balance between growth and inflation will remain central to monetary policy expectations, while developments in global energy markets and international financing conditions continue to influence the environment in which UK businesses operate.

What the week has changed for investors

The information released over the past several days has strengthened some elements of the investment outlook while making others more uncertain. Bank earnings suggest that financial activity remains resilient, semiconductor results demonstrate continuing demand for advanced computing infrastructure, and the UK economy has maintained positive growth. At the same time, US inflation has accelerated, financing conditions remain restrictive and equity markets have become increasingly sensitive to the valuations attached to future earnings.

The apparent contradiction between strong corporate results and falling share prices is therefore understandable. Financial markets do not value businesses solely on the earnings they have already generated; they assess the cash flows those businesses may produce over many years and the risks associated with achieving them. Changes in interest rates, capital requirements and investor expectations can materially alter that assessment even when reported profitability remains strong.

The semiconductor sector provides perhaps the clearest illustration. ASML and TSMC have delivered substantial evidence of continuing demand, but their results have not eliminated uncertainty about the eventual returns generated by the broader AI infrastructure investment cycle. The industry may continue expanding rapidly while individual companies experience periods of valuation pressure, particularly where expectations already incorporate sustained growth and exceptional profitability.

The banking sector presents a contrasting picture. Strong trading results and continued client activity provide evidence of current financial resilience, but the sustainability of that performance will depend partly on the path of interest rates, economic growth and asset valuations. Earnings generated through unusually active trading conditions may not be repeated indefinitely, while the effects of higher borrowing costs can take time to emerge in lending and credit performance.

Inflation remains the principal complication connecting these developments. Persistent price pressures can support nominal revenue growth while increasing operating costs and delaying the return to less restrictive financial conditions. For businesses undertaking substantial investment, the resulting increase in financing costs can alter project economics and raise the returns required to justify additional capital expenditure.

The week's market movements suggest that investors are becoming more discriminating about those relationships. Businesses capable of generating substantial cash today may be assessed differently from companies whose investment cases depend heavily on future expansion, while industries benefiting from structural demand may still experience cyclical changes in profitability and valuation.

This does not establish that the broader equity market has entered a sustained period of weakness. Thursday's recovery demonstrates that demand for equities remains present, even as investors reassess the relative attractiveness of different sectors. The important development is the increasingly visible distinction between confidence in corporate growth and confidence in the prices being paid for it.

As the earnings season progresses, the next stage of the assessment will depend on whether companies can demonstrate that current investment is translating into sustainable profitability and cash generation. The results already published provide substantial evidence of commercial activity, but they also reinforce the importance of capital discipline, balance-sheet strength and realistic assumptions about future returns.

The week has ultimately served as a reminder that favourable corporate fundamentals and attractive investment opportunities are not always interchangeable. Earnings growth remains important, but its value depends on the capital required to produce it, the durability of the underlying economics and the expectations already incorporated into market prices. In an environment of persistent inflation and elevated financing costs, those distinctions are becoming increasingly consequential.