A New Partner for Corporate Value.
Hands-on, comprehensive support for enhancing the corporate value of listed companies
Japan's capital markets are currently at a major turning point. With the Tokyo Stock Exchange calling for 'management conscious of capital costs and stock prices' and the Ministry of Economy, Trade and Industry establishing 'Corporate Acquisition Guidelines,' listed companies are expected more than ever to achieve sustainable corporate value enhancement.
Among approximately 4,000 listed companies in Japan, many possess latent growth opportunities but have been unable to fully realize their value due to organizational rigidity and a lack of execution capabilities for discontinuous growth. There are also many cases where companies need to rebuild a robust financial foundation to complete fundamental turnarounds.
We address these market changes and individual corporate challenges by combining our deep management improvement expertise, cultivated over many years, with agile capital solutions. Going beyond mere advisory, we serve as a 'true partner' supporting effective management execution, contributing to the revitalization of Japan's economy.
Philosophy
Our Philosophy
Unlocking the potential of Japanese companies
through Japan-style capital market solutions
— Bridging companies and capital markets, partnering through transformation
Bridging companies and capital markets, partnering through transformation and beyond
Co-Creation
As a partner deeply committed to corporate aspirations and true value enhancement with passion, building relationships that continue to evolve together
Challenge
As a trusted advisor to management and a champion of unconventional transformation, persevering side by side to break through barriers together
Excellence
Identifying true value as professionals, refining it with passion and thoroughness
Investment Approach
We employ two investment approaches
Public Equity Investment
Acquiring common stock in the market and providing management recommendations tailored to the needs of investee companies.
Hands-on Management Investment
Based on third-party allotment of latent shares, we execute a multi-year hands-on management program with your company, aiming to achieve discontinuous growth.
Value Proposition
In our hands-on management investment, as professionals committed to corporate value enhancement on a same-boat basis, we provide services based on three core concepts.
Hands-on Partnership
Going beyond advice to persistently support the "realization of value" through profit growth and stock value enhancement. Top-tier professional services delivered by representatives with extensive track records at leading firms, supported by specialized experts across all domains.
Performance-Based
Full commitment with an overwhelming sense of ownership. Our success-fee business model means we only earn returns when profits and stock prices grow.
Governance Unchanged
As non-voting minority investors, your governance structure remains unchanged. 100% control stays with you. Our structure prevents us from forcing decisions or share sales.
Discontinuous Growth
Creating growth through M&A and restructuring existing businesses
Capital Raising
Funding and capital through convertible bonds, preferred stock, and stock acquisition rights
Next-Gen Management
Executive recruitment, compensation design, management function enhancement
Capital Market Solutions
Listing maintenance compliance, activist defense strategies
Our Team
Yuya Yamashita
Yamashita Yuya
Joined Advantage Partners in October 2019. Handled investment cases including Itoki (7972), Koshidaka HD (2157), rakumo (4060), Visasq (4490), Hokuto (1379), and Nihon Power Fastening (5950) in the engagement investment team for listed companies.
Supported M&A execution, pricing strategy, operational improvement, mid-term plan development, business alliances, and management function enhancement.
Prior to Advantage Partners, worked at McKinsey & Company across manufacturing, energy, logistics, and healthcare industries on new business development, company-wide transformation, sales strategy, cost reduction, and productivity improvement.
Graduated from the University of Tokyo, Faculty of Agriculture, Veterinary Science.
Jumpei Nagasawa
Nagasawa Jumpei
Joined Uzabase in 2009 when it was a small startup, gaining experience as lead engineer in planning and development for SPEEDA and NewsPicks. After Uzabase's IPO, obtained a European MBA and joined McKinsey & Company in 2020, working as a management consultant primarily on new business development and digital strategy.
Subsequently joined Laboro AI, an AI consulting firm, in 2022 as Senior Consultant, leading AI implementation for major corporations and experiencing a second IPO.
Completed the Graduate School of Agricultural and Life Sciences at the University of Tokyo; withdrew from doctoral program.
Asuka Tatsumoto
Tatsumoto Asuka
Joined Accenture in 2017, working in the Strategy Consulting division on new business launches and growth support, DX and business transformation, and overseas expansion strategy across various industries.
Joined Recruit in 2021 as a business development lead, responsible for launching and operating new B2B services in the HR/Education division, covering business/sales planning, marketing, and product management.
Subsequently founded Strand Partners Inc., providing recruitment support (talent placement and recruitment consulting) and management consulting services.
Graduated from the Faculty of Economics, Keio University.
Tetsuo Naraha
Naraha Tetsuo
As Managing Director at Goldman Sachs and Partner at McKinsey, provided advisory services to leading Japanese companies including Hitachi and NEC on growth strategy, fundraising, IR, M&A, corporate transformation, and sales reform.
Led corporate transformation as an executive at operating companies, including Representative Vice President of Sanyo Electric, Executive Officer at M3, Vice President & Director of Fujita, President & CEO of Clinical Porter, Senior Managing Executive Officer at Tsubaki Nakashima, Chief of Staff at Daicel, and Senior Managing Executive Officer at Yanase (overseeing cost transformation).
Strength lies in integrating the realities of factories and sales frontlines with the dynamics of global capital markets, crafting transformations that create value and resonate with people on the ground across diverse companies at various phases and challenges. Graduated from the University of Tokyo, Faculty of Education. Completed MIT Sloan MBA. Visiting Researcher at MIT Media Lab. Upon turning 60, studied CG/VFX production techniques and founded a studio business in January 2026.
Company Overview
Committed to
Corporate Value
Enhancement
A team of professionals with extensive experience at top-tier firms, dedicated to enhancing corporate value for listed companies.
Contact Us
For inquiries about corporate value enhancement or our services, please feel free to reach out.
5-34-2 Shiba, Minato-ku, Tokyo