Investment Management

Second Quarter 2025 Insight

May 12, 2025

Aspiriant Q2 2025 Market Insight

Investment Strategy & Research (IS&R)

Explore key insights from our Investment Strategy & Research (IS&R) team’s second-quarter 2025 market outlook. This brief touches on shifting global trade dynamics, policy uncertainty, consumer and labor trends and how they shape long-term investment strategy. For a deeper dive, access the full Insight.

Highlights

  • Global Trade Realignment Is Underway: A shift toward protectionism is reshaping global commerce, with U.S. policymakers emphasizing domestic production and industrial resilience over cross-border efficiency.
  • Mixed Policy and Economic Signals Cloud Outlook: While employment and household finances remain stable, proposed tariffs, a large deficit and increased uncertainty weigh on sentiment, raising concerns about fiscal flexibility in a downturn and further complicating late-cycle forecasts.
  • Past Performance May Mislead Future Expectations: Strong equity outperformance over the past 15 years reflects historically low rates and expansive policy—conditions unlikely to persist.
  • Discipline Outperforms Reaction: Empirical evidence continues to show that staying invested in a diversified portfolio through market cycles yields better results than market timing.

Macro Environment at a Glance

The Reordering of Trade and Globalization

Markets in 2025 are contending with a meaningful shift in the global economic order—one defined by rising economic nationalism and a retreat from decades of globalization. In the U.S., policymakers are increasingly prioritizing industrial resilience and domestic production over cross-border efficiency, fueling a broader reorientation of trade policy.

One of the clearest expressions of this shift is the Trump administration’s recently proposed tariff package. Initially projected to raise the average effective tariff rate from 2.5% to as high as 25% across U.S. trading partners, subsequent negotiations with more than 50 countries—including China—have tempered estimates to a 10% to 20% range.

While elevated by modern standards, Figure 1 shows that tariffs at or above these levels were historically common during earlier periods of U.S. protectionism.

Average Effective Tariff Rates of Imports

We remain in the early stages of this transition. The long-term effects will depend on how costs are shared across supply chains. Producers may absorb some pressure, but for essential or specialized goods, consumers could face higher prices. In either case, trade barriers typically reduce transaction volume, slow economic growth and add friction to an already complex system.

Recalibrating Market Expectations After Unprecedented Tailwinds

Adding to today’s sense of unease is the shadow cast by an unprecedented stretch of market performance. From 2010 through 2024, U.S. large-cap equities delivered the highest rolling 15-year excess return over short-term government yields—typically measured by 3-month Treasury bills—since 1950, more than double the historical average, as illustrated in Figure 2. For many investors, this era redefined what market success can look like.

U.S. Large Cap Equity Performance over 15 Year Periods Since 1950 - Return Above Cash

This outperformance was underwritten by an unusually accommodative policy environment. Interest rates remained below 1% for much of the period, while the Fed expanded its balance sheet by over $5 trillion through quantitative easing. Fiscal policy was similarly expansive, with deficits averaging more than twice the historical norm. At the same time, equity markets were reshaped by the rise of dominant technology platforms, as a handful of mega-cap firms— publicly traded companies with market capitalizations typically over $200 billion—now make up nearly 30% of the S&P 500 and account for more than $17 trillion in market value added since 2009.

Though supported by strong fundamentals, these gains were amplified by stretched valuations and a historically low cost of capital—conditions unlikely to persist. As a result, today’s unease reflects not only geopolitical or policy risks, but the broader challenge of recalibrating expectations after an extraordinary period of market growth.

Final Thoughts & Portfolio Considerations

  • Market Timing Often Undermines Outcomes: Investors who remain fully invested tend to outperform those who attempt to time the market—a trend supported by Morningstar’s 2024 Mind the Gap study, which links return shortfalls to poorly timed trades. The narrowest gaps occurred in diversified portfolios—highlighting the role of broad exposure in reducing emotional decision-making and capturing return dispersion.
  • Prioritizing Resilient Portfolio Positioning: In low-growth, low-inflation environments, nominal bonds and defensive equity sectors—such as utilities and dividend payers—have tended to offer stability. If inflation proves persistent, allocations to healthcare, real assets and inflation-linked bonds may prove more durable.
  • Diversification Provides Resilience Across Scenarios: No single portfolio positioning can address every macro-outcome. Broad exposure across asset classes, regions and sources of risk remains the most reliable foundation for achieving long-term objectives.
  • Core Principles Endure Structural Shifts: Even as global dynamics evolve and policy constraints grow, time-tested investment frameworks continue to guide decision-making through periods of heightened uncertainty.
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John Allen
John Allen

Chief Investment Officer, Partner

John joined Aspiriant in 2014 as Chief Investment Officer. As CIO, John is primarily responsible for leading the firm’s overall Investment Strategy & Research Group, broadly consisting of 12 professionals. The group is responsible for asset allocation, portfolio construction, manager selection and risk management. John also chairs the firm’s Investment Committee and serves on a number of other committees. He has over 20 years of experience in investment management, investment banking, corporate finance advisory and business strategy consulting.

Prior to joining the firm, John was a senior member of the client service team at Grantham, Mayo, Van Otterloo (GMO), which manages approximately $80 billion across a wide-range of public equities, fixed income, hedge funds and asset allocation funds. In that role, John had primary responsibility for 80 clients and $6.5 billion in assets under management.

Prior to joining GMO, John was the Head of Investments at a large family office in Los Angeles. There, John had responsibility for managing the firm’s overall investment portfolio as well as its direct investments. Previously, John established his career working in the investment banking department at Donaldson, Lufkin & Jenrette and in the business consulting practice at Stern Stewart & Co. Throughout his career, John has served on the boards of directors of three private companies.

John earned a Bachelor of Science degree with high distinction from the Economics Department at the University of Virginia. He holds the Chartered Financial Analyst® (CFA®) designation and the Chartered Alternative Investment Analyst (CAIA) designation. He is also a member of the CFA Institute and CAIA Association.

John lives in Los Angeles with his family.

Marc Castellani
Marc Castellani

Managing Director in Private Investments, Chair of the Board of Directors, Partner

Marc joined Aspiriant in February of 2015. He has over 25 years of experience in the financial services industry. Marc oversees the firm’s private investment offering (private equity, venture capital, hedge funds and private real estate), and actively works with his colleagues on asset allocation, investment strategy and manager selection. Marc is a member of Aspiriant’s Investment and Client Service Committees.

Prior to joining the firm, Marc worked at the J.P. Morgan Private Bank in Los Angeles in a senior client management role and worked with families and high net worth individuals on portfolio management, tax planning, liability management and wealth transfer strategies. Before moving to Los Angeles in 2009, Marc worked for several years in New York City in the Mergers and Acquisitions departments of J.P. Morgan and Banc of America Securities. In that capacity, Marc advised large multinational clients and privately held, family-owned businesses on a range of strategic alternatives including sales, mergers, acquisitions, divestitures, spin-offs and growth equity financings.

Marc earned his undergraduate degree at Cornell University and his graduate degree in finance at the University of Rochester.

Marc lives in Manhattan Beach with his wife and children.

Stephen Kawasaki
Stephen Kawasaki

Senior Manager in Investment Strategy & Research, Partner

Stephen brings nearly a decade of investment management experience to his role as a Senior Manager in Investment Strategy & Research. Stephen works with his colleagues from our
Orange County office on asset allocation, investment strategy and manager selection decisions.

Prior to joining Aspiriant in 2016, Stephen was a member of the Investment Committee at Balasa Dinverno Foltz LLC, which manages assets primarily for individuals, families and institutional clients. In addition to investment strategy responsibilities, he provided investment and wealth advisory services to high net worth individuals and families.

Stephen earned a Bachelor of Science degree in Financial Planning with high honors from the University of Illinois, Urbana-Champaign. He holds the Chartered Financial Analyst® (CFA®), Chartered Alternative Investment Analyst (CAIA), and the Certified Financial PlannerTMTM (CFP®) designations. He is also a member of the CFA Institute and CAIA Association.

Stephen lives in Orange County with his family.

Andrea Boyn
Andrea Boyn

Research Analyst in Investment Strategy & Research

Andrea joined Aspiriant in 2024 as a Research Analyst on the Investment Strategy & Research Team.  She has several years of experience in financial planning and wealth management, servicing high-net-worth individuals and families. In her role, she participates in ongoing research and investment analyses, creates firmwide materials and conducts third-party manager due diligence.

Before joining Aspiriant, Andrea worked as an Investment Analyst at Canterbury Consulting in Newport Beach. As part of the Family Office team, she collaborated with senior investment consultants on client deliverables such as performance reports, asset allocation studies, investment manager searches and portfolio analyses.

Andrea earned her B.S. degree in Finance from California State University, Long Beach (CSULB), graduating summa cum laude and receiving the Outstanding Undergraduate Award. In her spare time, she mentors aspiring women in finance through a student philanthropic organization and the Beach Investment Group which manages the CSULB investment portfolios.


Aspiriant is an investment adviser registered with the Securities and Exchange Commission (SEC), which does not suggest a certain level of skill and training. Additional information regarding Aspiriant and its advisory practices can be obtained via the following link: aspiriant.com.

Information contained herein is considered confidential, private and Aspiriant proprietary inside information that is intended only for the audience to which Aspiriant has knowingly distributed this presentation to, either by way of request or voluntarily. Any redistribution of this material without our prior express written permission is a violation of Aspirant’s privacy policy adopted to comport with various state and federal privacy laws that may subject any unauthorized distributor to legal action.

All opinions, figures, charts/graphs, estimates and data included in this document are as on date and are subject to change without notice. The statements contained herein may include statements of future expectations, for general market performance or economic conditions, and other forward-looking statements that are based on our current views and assumptions and involve known and unknown risks and uncertainties that could cause actual results, performance, or events to differ materially from those expressed or implied in such statements. Forecasts, projections and other forward-looking statements are based upon assumptions, current beliefs and expectations. Forward-looking statements are subject to numerous assumptions, estimates, risks and uncertainties, including but not limited to: economic, business, market and geopolitical conditions; U.S. and foreign regulatory developments relating to, among other things, financial institutions and markets, government oversight, fiscal and tax policy. Any forward-looking information should not be regarded as a representation by Aspiriant or any other person that estimates or expectations contemplated will be achieved, as the future is not predictable.

Past performance is not indicative of future results. There can be no assurances that any strategy will meet its investment objectives. All investments can lose value. The performance and volatility of an investor’s portfolio will not be the same as the index. Indices are unmanaged and have no fees. An investment may not be made directly in an index. The data used in this material was obtained from third-party sources the firm believes are reliable and internally. Aspiriant is not responsible for the accuracy of any third-party data used in the construction of this presentation. This information alone is not sufficient and should not be used for the development or implementation of an investment strategy. It should not be construed as investment advice to any party. Investing in securities, such as equity, fixed income and mutual funds, involves the risk of partial or complete loss of capital that prospective investors should be prepared to bear. Any reference to securities, directly or indirectly, is not a recommendation and does not represent a solicitation to buy or an offer of a solicitation to sell such securities. Any statistical information contained herein has been obtained from publicly available market data (such as, but not limited to, data published by Bloomberg Finance L.P. and its affiliates), internal research and regulatory filings.


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