The Hidden Driver Behind the S&P 500 Materials Sector Rally: Examining the AI Power Grid and Copper Supercycle

2026-05-24 10:03:06

Hello, as an expert writer for Daily Stock, today I will explore the structural correlation between the commodities rally and the 'Materials' sector, which has recently been quietly demonstrating its strength within the S&P 500.

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Core Summary

In the first half of 2026, the global commodities market has been distinctly led by the strength of copper prices, which have surpassed $6 per pound.

This is the result of explosive demand for power grids, driven by the expansion of AI data centers, directly colliding with supply bottlenecks at existing mines.

Consequently, the S&P 500 Materials Sector (XLB) has shed its former label as a simple cyclical stock and been upgraded to a core theme of physical infrastructure.

Funds exiting overvalued technology stocks are moving into value stocks with clear earnings visibility, putting the sector at the center of sector rotation.

Current Situation Summary

As of the close on the day (May 24, 2026), the NASDAQ index recorded 26,343.97, showing a somewhat wait-and-see attitude with its own Fear & Greed Index at 58.6 (Neutral).

Coming down from the "Greed" levels of a week ago (63.2) and a month ago (68.5), the market has entered an earnings-driven phase where it focuses more on corporate fundamentals and changes in EPS (Earnings Per Share) estimates than on expectations of interest rate cuts.

In this macroeconomic environment, despite a solid strong-dollar trend with the USD/KRW exchange rate at 1,519.00 won on the day, prices of major non-ferrous metals, including copper, maintain a robust upward trend.

In particular, during the first quarter of 2026, the S&P 500 Materials sector stood out by recording an excellent quarterly return of 10.2%, driven by the strength of chemical and commodity-linked stocks.

Financial Analysis

The strength of the materials sector is not a simple thematic rally but is firmly based on the solid free cash flow (FCF) of the companies within it.

Although the production costs of major minerals like copper are structurally rising, the earnings resilience of large companies, which defend their operating margins through price hikes, has been fully proven.

On the other hand, developing new mines requires an average permitting period of over 10 years and astronomical capital (CAPEX) investments upfront.

This means that the solid pricing power market of existing blue-chip companies will persist, serving as the driving force behind the continuous upward revision of EPS estimates for key stocks in the materials sector.

Analytical MetricS&P 500 IT Sector (Tech)S&P 500 Materials Sector (XLB)Remarks
**Key Growth Drivers**Software, AI semiconductor demandAI power grid infrastructure, copper/mineralsPolarization of AI beneficiaries by sector
**Forward P/E (Est.)**High 20s to over 30xMid to high 10sMaterials sector valuation appeal
**Average Dividend Yield**Under 1%Around 1.7%Inflation hedge and defensive capabilities
**EPS Estimate Trend**Deepening differentiation amid peak debatesStable upward trend based on price hikesSupply constraints support the earnings floor

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Valuation

Currently, the primary materials sector ETF (XLB) managed by State Street is trading around $49 to $50 per share, continuing its solid trend.

As the concentration in large-cap tech stocks eases and market returns spread to other stocks, the relative valuation appeal of the materials sector becomes even more prominent.

In particular, major models predicting economic growth, such as GDPNow, continue to support a soft landing for the U.S. economy, providing a positive environment for economically sensitive materials stocks.

Even in the prolonged high-interest-rate environment, a dividend yield of around 1.7% based on the XLB ETF is considered a very favorable condition for securing downside rigidity in a portfolio.

Expert & Institutional Analysis

The Chilean Copper Commission (Cochilco) recently revised its average copper price forecast for 2026 upward to $5.55 per pound, suggesting a structural supply shortage.

Global investment banks are also placing strong weight on the possibility of a long-term boom in the non-ferrous metals market as AI infrastructure expansion coincides with the global power grid replacement cycle.

JPMorgan Research diagnosed that despite some downside macroeconomic risks, dip-buying by major countries, including China, acts as a strong support line for commodity prices.

Morgan Stanley also actively recommended portfolio diversification into highly capital-efficient, selective industrial and materials sectors through its 2026 stock market outlook.

Risk Factors

The most notable risk to watch in the current market is the shift in the Federal Reserve's (Fed) monetary policy stance and the subsequent signals of global economic recession.

If cooling employment data and falling inflation (CPI/PCE) worsen simultaneously, undermining the soft-landing scenario, the cyclically sensitive materials sector could face concerns over rapid demand destruction.

Additionally, the high volatility characteristic of the commodities market and the potential evaporation of commodity premiums if geopolitical conflicts ease must also be kept in mind.

Just as the KOSPI index at 7,847.71 came down from "Greed" (64.8) a month ago to its current "Neutral" (57.3) status, one must always be mindful that intense profit-taking could concentrate when market sentiment abruptly changes.

Investment Perspective Summary

In conclusion, the S&P 500 Materials Sector has successfully broken away from its outdated image of being passively dragged along by economic cycles, equipping itself with the clear growth theme of "AI Infrastructure."

As the supply structure of essential raw materials like copper is highly unlikely to improve in the short term, the earnings defense capability of fundamentally strong related companies is expected to remain firmly valid for the time being.

However, with the slowdown in macroeconomic indicators and the uncertainty of the interest rate trajectory persisting, a long-term value investing perspective is more necessary now than chasing short-term momentum.

A strategy that wisely utilizes the waves of sector rotation, which will inevitably appear in the process of closing the valuation gap with growth stocks, is required.

Investor Checkpoint Q&A

Q1. How does investing in the materials sector fundamentally differ from investing in traditional tech stocks?

The materials sector is directly linked to the real economy and commodity prices, holding defensive characteristics with significantly lower valuations and relatively higher dividend yields compared to tech stocks.

Q2. What impact does the rise in copper prices have on the overall S&P 500 materials sector?

It translates directly to price hikes by mining and smelting companies, vastly improving their profit margins, which solidly drives up the share prices of materials sector ETFs like XLB, where many of these companies are heavily weighted.

Q3. Why are the 4th Industrial Revolution and AI suddenly causing an explosion in copper demand?

Modern AI data centers consume massive amounts of power compared to traditional ones, and large quantities of copper are essential for expanding the high-voltage transformers, power grids, and advanced cooling systems needed to support them.

Q4. What is the current status of the Fear & Greed Index for the two major markets compiled by Daily Stock?

As of May 24, 2026, the KOSPI is at 57.3 (Neutral) and the NASDAQ is at 58.6 (Neutral), indicating that both markets have cooled from past overheating and are showing a cautious, wait-and-see attitude focused on fundamentals.

Q5. What are the most critical macroeconomic indicators to watch when investing in the materials sector?

The Personal Consumption Expenditures (PCE) price index and employment indicators watched by the U.S. Federal Reserve; if these slow down sharply in the short term, commodity demand could take a major hit due to fears of an economic recession.

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