Third Quarter 2026 Market Commentary
Market Commentary: By Annette Di Bello, CPA / PFS, CFP® | October 10, 2026
Higher Rates, AI Investment and Selective Opportunities
The third quarter of 2026 was strong through August before becoming more volatile in September. For the quarter, the S&P 500 gained approximately 2.0% and the Nasdaq rose 2.5%, while the Dow declined 2.7%. At the same time, the 10-year Treasury yield reached approximately 5.3%, and oil moved back above $100 amid renewed geopolitical tensions.
Against this backdrop, we remain focused on long-term investment themes while maintaining discipline around valuation, diversification, taxes and risk.
AI, Technology & Semiconductors
Artificial intelligence remains one of our most important long-term investment themes. The opportunity is also broadening beyond the largest semiconductor companies into software, cloud computing, memory, networking, chip equipment, custom silicon and servers.
We remain constructive on the AI investment cycle but believe valuations matter. Market pullbacks can provide opportunities to add high-quality companies at more attractive prices.
Power & Energy Infrastructure
AI is increasingly becoming an energy story. Data centers require enormous amounts of electricity, supporting demand for nuclear and natural-gas generation, utilities, grid modernization and electrical equipment.
We believe power availability could become one of the important constraints—and investment opportunities—associated with continued AI expansion.
Health Care, Cybersecurity & Emerging Technology
Health care innovation continues across GLP-1 therapies, oncology and next-generation treatments, although individual company fundamentals vary considerably. Cybersecurity remains essential as cyber threats become more sophisticated and businesses face increasing data-security requirements.
Quantum computing also continues to advance through government investment and private-sector research. Because commercial adoption remains early and valuations can be high, we view quantum as a smaller, long-term allocation appropriate for substantial volatility.
Industrials, Defense & Critical Minerals
Infrastructure investment, domestic manufacturing and defense modernization continue to support selected industrial and defense companies.
We are also monitoring copper, rare earths and other critical minerals needed for AI data centers, electrical grids, defense systems and electrification. These markets can be volatile, but long-term demand and efforts to diversify global supply chains remain important investment themes.
Bonds Are Attractive Again
Higher interest rates have created significantly better opportunities in fixed income. The 10-year Treasury reached approximately 5.3% during the quarter, while the 30-year yield reached approximately 5.65%.
We continue to see opportunities in individual Treasuries and high-quality corporate bonds. For California investors in higher tax brackets, municipal bonds can also provide attractive tax-equivalent income.
Our Outlook
Our base case remains continued economic growth, persistent inflation and higher-for-longer interest rates. The economy remains resilient, but higher bond yields create greater competition for stocks and make valuation increasingly important.
We continue to rebalance portfolios according to each client’s target allocation while looking for opportunities across our long-term investment themes. We are also building bond ladders at today’s higher yields, maintaining liquidity for future opportunities and reviewing year-end tax strategies, including tax-loss harvesting where appropriate.
Periods of volatility can create opportunities for disciplined long-term investors. Our focus remains on quality, valuation, diversification and tax efficiency rather than attempting to predict short-term market movements.
Disciplined investing, tax efficiency and diversification remain key to building and preserving long-term wealth.
About the Author
Annette Di Bello, CPA/PFS, CFP® is the Founder and President of Di Bello Financial, a fee-only Registered Investment Advisor. With nearly four decades of experience in accounting, taxation, financial planning and investment management, she helps high-net-worth individuals and families integrate investment management with tax strategy and long-term financial planning.
Important Disclosure
This material is for informational and educational purposes only and is not individualized investment, tax, accounting or legal advice. Opinions are as of the date written and are subject to change. Investment advisory services are offered through Di Bello Financial, a California Registered Investment Advisor. Registration does not imply a certain level of skill or training. Past performance does not guarantee future results. All investing involves risk, including possible loss of principal. References to sectors or investment opportunities are not recommendations to buy or sell any specific security.
© 2026 Di Bello Financial. All Rights Reserved.
3rd Quarter 2026 Market Commentary at a Glance
Higher Interest Rates, AI Expansion & Selective Investment Opportunities
Markets experienced renewed volatility during the third quarter as higher interest rates, geopolitical tensions, and inflation concerns weighed on investor sentiment. Despite these challenges, we continue to see opportunities across several long-term investment themes.
Key Investment Themes
AI & Technology: Expanding opportunities in semiconductors, cloud computing, enterprise software, and AI infrastructure.
Power & Energy: Growing electricity demand from data centers supports utilities, nuclear power, natural gas, and grid modernization.
Health Care & Cybersecurity: Innovation in biotechnology, GLP-1 therapies, and digital security continues creating opportunities.
Quantum Computing: Emerging technology with significant long-term potential, but elevated valuations and volatility.
Industrials & Critical Minerals: Defense modernization, domestic manufacturing, copper, and rare earth minerals support long-term investment opportunities.
Bonds & Income: Higher Treasury yields create attractive opportunities in individual bond ladders, investment-grade corporate bonds, and municipal bonds.
Our Market Outlook
We anticipate continued economic growth accompanied by persistent inflation, higher interest rates, and periodic market volatility. Valuation discipline and diversification remain increasingly important.
Our Investment Approach
We continue to emphasize high-quality investments, selective opportunities during market pullbacks, tax-efficient portfolio management, and attractive fixed-income yields while maintaining allocations appropriate for each client’s objectives.
Our Focus: Building and preserving long-term wealth through disciplined investing, diversification, and proactive tax management.
© 2026 Di Bello Financial. All Rights Reserved.
Second Quarter 2026 Market Commentary
Market Commentary: By Annette Di Bello, CPA / PFS, CFP® | July 5, 2026
AI, Innovation, and Selective Portfolio Positioning
The second quarter of 2026 was a strong period for equity markets, led primarily by technology, artificial intelligence, semiconductors, cybersecurity, and other growth-oriented areas of the market. While returns were encouraging, the broader environment remains complex. Inflation, interest rates, geopolitical risk, energy volatility, and valuation concerns continue to matter.
At Di Bello Financial, we believe this environment favors disciplined, selective portfolio management rather than broad speculation. Many of the strongest investment themes today are connected by one common force: the expanding use of artificial intelligence across the economy.
Artificial Intelligence Remains a Major Market Driver
Artificial intelligence continues to be one of the most important long-term investment themes. Investor interest has been focused on companies tied to semiconductors, cloud computing, cybersecurity, data centers, automation, electrical infrastructure, energy infrastructure, utilities, and power demand.
We believe the next phase of AI will extend well beyond traditional technology companies. AI is increasingly being applied across major industries, including infrastructure, science, medicine, energy systems, financial services, industrial automation, defense, and communications.
Key Long-Term Themes We Are Watching
Artificial intelligence and technology infrastructure
AI requires significant investment in semiconductors, cloud computing, data centers, software, networking, and computing power.
Cybersecurity
As AI adoption, cloud migration, digital infrastructure, and data usage continue to expand, protecting networks, data, identity, and critical infrastructure becomes increasingly important.
Quantum computing
Quantum computing remains an early-stage and more speculative area, but it may become an important long-term innovation cycle as computing demands continue to evolve.
Satellite technology
Satellite technology may benefit from increased demand for communications, defense, data collection, navigation, connectivity, earth observation, and space-based infrastructure.
Rare earth minerals and critical materials
Many advanced technologies rely on specialized materials used in semiconductors, electric vehicles, defense systems, robotics, renewable energy, batteries, satellites, and other high-tech applications. As demand for AI infrastructure, electrification, automation, and defense technology grows, access to critical materials may become increasingly important.
Energy infrastructure and utilities
Data centers, semiconductor manufacturing, cloud computing, and AI workloads require significant and reliable electricity. This may create long-term opportunities tied to power generation, grid modernization, transmission, electrical equipment, and utility infrastructure.
Industrials
Industrials may benefit as AI is used to improve automation, logistics, manufacturing efficiency, infrastructure, robotics, and productivity.
Financials
Financial companies may benefit as AI is applied to fraud detection, cybersecurity, underwriting, risk management, customer service, investment research, payments, compliance, and operational efficiency.
Healthcare and biotechnology
Healthcare and biotechnology may be among the most important long-term beneficiaries of AI. As AI is applied to drug discovery, diagnostics, medical research, data analysis, and personalized medicine, the potential for medical advancements and future cures may be significantly magnified.
Why Direct Stock Ownership Matters
Rather than relying only on broad index funds or mutual funds, direct stock ownership allows for more intentional portfolio construction. It provides the ability to identify specific companies that may be positioned to benefit from long-term structural trends, while also managing overlap, valuation exposure, taxes, and risk.
Our objective is to build thoughtful portfolios designed to pursue positive alpha over time, manage risk, improve tax efficiency, and avoid unnecessary internal fund expenses where possible.
ETFs can still be useful in certain areas of portfolio construction, but a portfolio made entirely of ETFs or mutual funds may include embedded costs, overlap, and less control over individual holdings.
Portfolio Highlights
Several portfolio holdings benefited during the quarter from market strength in artificial intelligence, semiconductors, technology infrastructure, and cybersecurity. The top performers reflected several themes we have been emphasizing, including AI infrastructure, semiconductors, cybersecurity, and technology hardware.
Strong short-term performance is welcome, but our process remains focused on disciplined portfolio construction rather than chasing momentum. We continue to evaluate each position based on fundamentals, valuation, portfolio risk, and long-term investment merit.
Looking Ahead
We remain constructive on long-term innovation themes, but we also believe these areas require careful security selection, valuation discipline, and risk management. AI-related enthusiasm can create opportunity, but it can also create valuation risk.
Strong quarters are encouraging, but long-term investment success is built through discipline across many different market environments.
Our focus remains on high-quality companies, prudent diversification, tax-efficient portfolio management, and disciplined long-term investing.
Important Disclosure
This article is provided for informational and educational purposes only and should not be construed as individualized investment, tax, legal, or financial planning advice. The information reflects general market themes and portfolio observations as of the second quarter of 2026 and is subject to change without notice.
Portfolio holdings, allocations, and performance may vary by client based on individual objectives, risk tolerance, account size, cash flows, tax considerations, investment restrictions, and timing of purchases or sales. References to specific securities, sectors, or themes are not recommendations to buy, sell, or hold any security and should not be interpreted as a guarantee of future performance.
Past performance is not indicative of future results. All investments involve risk, including the possible loss of principal. Thematic investments, including artificial intelligence, technology, cybersecurity, quantum computing, satellite technology, rare earth minerals, critical materials, biotechnology, energy infrastructure, utilities, industrials, and financials, may involve additional volatility and sector-specific risks.
Any discussion of alpha, risk management, tax efficiency, or cost efficiency represents an investment objective or portfolio management approach and does not guarantee that such results will be achieved.
About the Author
Annette Di Bello, CPA, PFS, CFP® is the Founder and President of Di Bello Financial. As a fee-only fiduciary advisor, she provides investment management and integrated tax planning for high-net-worth families, business owners, executives, and retirees. Her market commentary reflects current economic conditions, investment research, and long-term portfolio management principles intended for educational purposes.
© 2026 Di Bello Financial. All rights reserved.
Market Commentary at a Glance
Artificial intelligence continues to influence a broad range of long-term investment themes beyond traditional technology companies.
Areas of interest include:
- Semiconductors, cloud computing, data centers, and software
- Cybersecurity and digital infrastructure
- Quantum computing and satellite technology
- Rare earth minerals and critical materials
- Energy infrastructure, utilities, and electrical equipment
- Industrial automation, robotics, and manufacturing
- Financial services, fraud detection, and risk management
- Healthcare, biotechnology, diagnostics, and drug discovery
Direct ownership of individual stocks can provide greater control over security selection, valuation, portfolio overlap, taxes, and risk. ETFs may also be used selectively where they provide efficient exposure.
Di Bello Financial builds diversified, risk-based portfolios focused on high-quality companies, disciplined valuation, tax efficiency, and long-term investment merit—not short-term market momentum.