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Nomura Securities International

Nomura Securities International is the U.S. broker-dealer and principal trading arm of Japan's Nomura Group.

Last updated September 26, 2026

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Overview

Nomura Securities International, Inc. is the U.S.-based securities and principal trading subsidiary of Nomura Holdings, Inc., the Japanese financial services group. It operates as a broker-dealer in the United States, providing sales, trading, and principal trading services across fixed income, equities, and other asset classes to institutional clients. The entity is part of Nomura's global wholesale division, which connects U.S. and international investors to Nomura's worldwide markets platform. Nomura Holdings, the parent company, is one of Japan's largest financial groups, with roots dating back to 1925. The U.S. securities business has been built through a combination of organic growth and acquisitions, most notably the 2008 acquisition of Lehman Brothers' Asian and European operations, which significantly expanded Nomura's global footprint. Nomura Securities International serves as a key legal entity for Nomura's U.S. broker-dealer activities, including principal trading, underwriting, and market-making. The firm is headquartered in New York and is registered with the U.S. Securities and Exchange Commission (SEC) and is a member of FINRA and SIPC. It operates under the Nomura brand and is integrated into the group's global markets and investment banking operations. Its activities support Nomura's relationships with U.S. institutional investors, corporations, and government entities. As a subsidiary of a publicly listed parent, Nomura Securities International does not have its own separate stock listing. Its financial results are consolidated into Nomura Holdings' reports. The entity is a core component of Nomura's Americas strategy, which aims to provide clients with access to Japanese, Asian, and global markets while offering U.S. products and services to Nomura's international client base.

History

Nomura Securities International, Inc. is the U.S. securities subsidiary of Nomura Holdings, Inc., a Japanese financial services group. Nomura's history dates to 1925, when Nomura Securities Co., Ltd. was established in Osaka, Japan, as a bond trading house. Over the decades, Nomura expanded into a full-service securities firm and later a global financial group. The U.S. operations were developed to serve institutional clients and to connect Nomura's Asian franchise with American markets. A transformative event for Nomura's global business was the 2008 acquisition of the Asian, European, and Middle Eastern operations of Lehman Brothers, which had filed for bankruptcy. This acquisition significantly expanded Nomura's international footprint, including its U.S. securities business, and added thousands of employees and new client relationships. Nomura Securities International became a key legal entity for Nomura's U.S. broker-dealer activities, including principal trading, underwriting, and market-making. The entity operates under the regulatory framework of the U.S. Securities and Exchange Commission (SEC) and is a member of the Financial Industry Regulatory Authority (FINRA) and the Securities Investor Protection Corporation (SIPC). It is headquartered in New York and is part of Nomura's global markets and investment banking divisions. Its activities support Nomura's relationships with U.S. institutional investors, corporations, and government entities. As a subsidiary of Nomura Holdings, which is listed on the Tokyo Stock Exchange and the New York Stock Exchange, Nomura Securities International does not have its own separate stock listing. Its financial results are consolidated into Nomura Holdings' financial statements. The entity remains an active part of Nomura's Americas strategy, providing clients with access to Japanese, Asian, and global markets while offering U.S. products and services to Nomura's international client base.

  • 2008

    Nomura acquires Lehman Brothers' Asian, European, and Middle Eastern operations, expanding global footprint

  • 1925

    Nomura Securities Co., Ltd. founded in Osaka, Japan

Products and positioning

U.S. broker-dealer and principal trading arm of Nomura Group, serving institutional clients with global market access.

  • Equities sales and trading

    Execution and market-making in U.S. and international equities for institutional clients.

  • Fixed income sales and trading

    Trading and sales of government bonds, corporate bonds, and other fixed income products.

  • Principal trading

    Proprietary trading activities conducted by Nomura Securities International.

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