Summary

• The first full trading week of the second half of 2026 showed continued market resilience despite renewed inflation concerns and geopolitical uncertainty.
• Rising energy prices and sustained artificial intelligence infrastructure investment remained key drivers of market leadership, while defensive sectors and commodity-sensitive industries experienced relative weakness.
• Upcoming inflation data, including June CPI and PPI reports, will provide further insight into the Federal Reserve’s policy direction and the potential path of interest rates.
• The second-quarter earnings season is set to begin, with financial institutions taking the lead as investors evaluate whether corporate fundamentals can continue supporting equity valuations.

Market Overview: Investors Look Beyond Short-Term Uncertainty

Equity markets demonstrated strong resilience during the first full week of the second half of 2026, absorbing renewed geopolitical tensions, rising energy prices, and concerns surrounding inflation persistence.

Escalating tensions in the Middle East pushed crude oil prices higher, renewing market concerns that energy-driven inflation could slow the Federal Reserve’s potential transition toward a more accommodative policy environment. Meanwhile, Treasury yields moved back above the 4.5% level, reflecting expectations that interest rates may remain elevated for longer.

Despite these macro pressures, major equity indexes recovered from early-week volatility and finished with modest gains. Market participants increasingly focused on underlying economic fundamentals, corporate earnings potential, and structural growth themes rather than short-term uncertainty.

From a sector perspective, leadership remained concentrated in areas supported by strong fundamental momentum. Energy stocks benefited from higher oil prices and improving earnings expectations, while technology companies continued to receive support from long-term artificial intelligence infrastructure investment.

Sector Performance: Energy and AI Infrastructure Remain Market Leaders

Energy Sector Benefits From Rising Oil Prices

Energy-related companies were among the strongest performers during the week as crude oil prices advanced approximately 4% amid renewed geopolitical concerns.

Higher commodity prices improved earnings expectations for exploration, production, and refining companies. The market continued to reward businesses with direct exposure to energy supply constraints and favorable pricing environments.

AI Infrastructure Continues to Drive Technology Momentum

Technology stocks maintained their leadership position as demand for artificial intelligence infrastructure continued expanding.

Investment across data centers, high-speed networking, optical connectivity, semiconductor infrastructure, and AI server systems remained key growth drivers. Companies positioned within the AI infrastructure ecosystem continued attracting investor attention due to their potential exposure to long-term computing demand.

Defensive and Materials Sectors Face Relative Pressure

While cyclical growth sectors attracted capital, defensive consumer industries underperformed as investors rotated toward higher-growth opportunities.

Basic materials companies also experienced weakness as expectations for broader commodity demand remained cautious outside the energy sector.

Arakawa Quant Model Insights: Data-Driven Opportunities in Changing Markets

At Arakawa Quant, our investment framework combines quantitative screening, multi-factor analysis, and market structure evaluation to identify companies with stronger risk-adjusted growth potential.

The model evaluates multiple dimensions, including:

• Valuation efficiency
• Earnings growth quality
• Profitability strength
• Price momentum
• Analyst expectation revisions
• Market trend structure

By applying systematic analysis rather than relying on short-term sentiment, Arakawa Quant aims to identify opportunities supported by improving fundamentals and favorable market positioning.

Weekly Portfolio Highlights: AI Infrastructure and Energy Exposure Lead Performance

During the week, several companies connected to energy markets and artificial intelligence infrastructure demonstrated strong momentum.

Energy-related holdings benefited from improving commodity conditions and renewed demand expectations.

Meanwhile, AI infrastructure companies continued gaining attention as investors focused on long-term expansion in:

• Data center capacity
• AI computing demand
• High-speed networking
• Optical communication infrastructure
• Advanced semiconductor supply chains

Companies including Credo Technology (CRDO, Lumentum Holdings (LITE), SanDisk (SNDK), and Celestica (CLS) reflected continued market interest in businesses positioned within the AI infrastructure ecosystem.

These movements highlight a broader market trend: investors continue prioritizing companies with direct exposure to structural technology investment cycles.

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Weekly Performance Review

Top Performers

The strongest-performing opportunities during the week were primarily concentrated in:

• Energy-related companies benefiting from higher crude oil prices
• AI infrastructure suppliers supported by continued data center investment
• Semiconductor and connectivity companies benefiting from increased computing demand
• These areas demonstrated strong alignment between fundamental growth drivers and market momentum.

Underperformers

The weakest-performing positions were mainly associated with sectors affected by rising yields and changing investor preferences.

Precious metal-related companies declined as higher Treasury yields reduced demand for non-yielding assets.

Consumer finance and discretionary companies also faced pressure as investors evaluated the impact of higher borrowing costs on consumer spending and credit conditions.

The market rotation reflected a preference for companies with stronger structural growth visibility.

Market Outlook: Inflation Data and Earnings Season in Focus

The upcoming week will be highly important for investors as markets evaluate new economic signals.

June Consumer Price Index (CPI) and Producer Price Index (PPI) reports will provide further evidence regarding inflation trends and help shape expectations for Federal Reserve policy.

Following inflation data, attention will shift toward the beginning of second-quarter earnings season. Financial institutions will be among the first major companies reporting results, providing insight into corporate profitability, consumer conditions, and economic resilience.

Current expectations remain constructive, with analysts anticipating continued earnings growth across many sectors of the S&P 500.

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Arakawa Quant Perspective

Market conditions continue to demonstrate the importance of disciplined, data-driven investment decisions.

While geopolitical risks, inflation uncertainty, and interest rate expectations may create short-term volatility, structural trends such as artificial intelligence adoption, digital infrastructure expansion, and energy market transformation continue creating long-term investment opportunities.

Through quantitative models and systematic research frameworks, Arakawa Quant helps investors identify market opportunities with greater clarity and reduce the influence of emotional decision-making.