Outlook 2026 is available for free now.  Download your report  →

StoneX logo

How Foreign Capital Quietly Powered the US Stock Market Boom

By: Vincent Deluard, Director - Global Macro Strategy

As of March 2026, global capital flows remain one of the most powerful forces shaping US equity markets. For more than a decade, international investors have directed enormous pools of capital toward the United States, reinforcing valuations and sustaining market momentum. This influx of global investment has supported a prolonged rally across US equities even as domestic macro conditions shifted. Understanding the role of foreign capital has therefore become essential to interpreting both market strength and potential future vulnerabilities.

Vincent Deluard, Director of Global Macro Strategy at StoneX Group, has spent years analysing global capital flows and their impact on equity markets. His macro research focuses on structural forces that shape liquidity, investment cycles, and cross-border capital movements, offering a distinct perspective on how foreign investment has reinforced US market leadership.

Key Themes from the Discussion

  • Roughly $2 trillion in foreign capital has flowed into US equity markets during the past decade.
  • Global geopolitical shifts and defense spending may redirect international capital away from US assets.
  • Slowing foreign inflows could expose how dependent US equities have become on external liquidity.

Watch the Full Conversation

Discover Actionable Global Macro Insights with StoneX Market Intelligence
  • Equities

The subsidiaries of StoneX Group Inc. provide financial products and services, including, but not limited to, physical commodities, securities, clearing, global payments, risk management, asset management, foreign exchange, and exchange-traded and over-the-counter derivatives. These financial products and services are offered in accordance with the applicable laws in the jurisdictions in which they are provided and are subject to specific terms, conditions, and restrictions contained in the terms of business applicable to each such offering. Not all products and services are available in all countries. The products and services offered by the StoneX Group of companies involve risk of loss and may not be suitable for all investors. Full Disclaimer. This content is not intended for residents of any particular country, and the information herein is not advice nor a recommendation to trade nor does it constitute an offer or solicitation to buy or sell any financial product or service, by any person or entity in any jurisdiction or country where such distribution or use would be contrary to local law or regulation. Please refer to the Regulatory Disclosure section for entity-specific disclosures. No part of this material may be copied, photocopied or duplicated in any form by any means or redistributed without the prior written consent of StoneX Group Inc. The information herein is provided for informational purposes only. This information is provided on an ‘as-is’ basis and may contain statements and opinions of the StoneX Group of companies as well as excerpts and/or information from public sources and third parties and no warranty, whether express or implied, is given as to its completeness or accuracy. Each company within the StoneX Group of companies (on its own behalf and on behalf of its directors, employees and agents) disclaims any and all liability as well as any third-party claim that may arise from the accuracy and/or completeness of the information detailed herein, as well as the use of or reliance on this information by the recipient, any member of its group or any third party.


© 2026 StoneX Group Inc. all rights reserved.

Satellite view of Earth at night showing illuminated cities across Asia and the Middle East

Discover more insights

Our subscribers have access to comprehensive market analysis from StoneX spanning commodities, equities, currencies and more.

Related articles for Equities

Musk's Synergy Story Is Compelling but Tesla Investors Want Proof

Elon Musk's growing network of companies has given rise to a new kind of investment thesis, one that extends well beyond Tesla's vehicle deliveries and margin growth. The question investors are pressing is how far the strategic overlap between these businesses translates into measurable returns for Tesla shareholders or simply deepens governance risk.

Editorial Team
Editorial Team
  • Equities

Morning Commodity Insight: Technical Analysis and Trade Setup in Major Commodity Markets

This daily commentary delivers a concise, expert-driven overview of global futures markets, designed for traders and investors seeking actionable insights. Each edition covers the latest macroeconomic events, technical setups, and trade recommendations across major asset classes, including grains, livestock, metals, energy, currencies, treasury and equity indices. The report blends fundamental drivers with technical analysis to help readers navigate market volatility and identify high-probability trading opportunities.

Eli Tesfaye
Eli Tesfaye
  • Grains & Oilseeds
  • Base Metals
  • Precious Metals
  • Equities
  • Energy
  • Cocoa
  • Coffee
  • Sugar
  • Meats & Livestock
  • Currencies

Why the ASX 200 Needs a Less Hawkish RBA

Australian equities could benefit if investors begin to scale back expectations for further Reserve Bank of Australia rate hikes. With labor market conditions softening and economic momentum slowing, the outlook for interest rates may become an increasingly important driver of ASX 200 performance.

Editorial Team
Editorial Team
  • Equities
StoneX: We open markets

Our market expertise, advanced platforms, global reach, culture of full transparency and commitment to our clients’ success all set us apart in the financial marketplace.

Reach

With access to 40+ derivatives exchanges, 180+ foreign exchange markets, nearly every global securities marketplace and numerous bi-lateral liquidity venues, StoneX’s digital network and deep relationships can take clients anywhere they want to go.

Transparency

As a publicly traded company meeting the highest standards of regulatory compliance in the markets we serve, our financials and record of accomplishment are matters of public record. StoneX’s commitment to “doing the right thing over the easy thing” sets us apart in the industry and helps us build respect, client trust and new partnerships.

Expertise

From our proprietary Market Intelligence platform, to “boots on the ground” expertise from award-winning traders and professionals, we connect our clients directly to actionable insights they can use to make more informed decisions and achieve their goals in the global markets.