As winner of Best Performing Japan Large Cap Equity (3 years), Best Equity Manager (Japan) and Best REITs Manager (Japan), Sumitomo Mitsui Trust Asset Management (SuMi TRUST AM) has been recognised in Asia Asset Management’s Best of the Best Awards 2026 for the breadth of its Japan equities expertise.
Among the firm’s recognised capabilities, the Japan Value Focus Strategy stands out for its catalyst-driven approach to large-cap value investing and has delivered consistent results. As of end-December 2025, the strategy had returned annualised figures of 46.97% over one year, 35.16% over three years, 26.49% over five years and 17.52% since inception, outperforming the benchmark Tokyo Stock Price Index across each of those periods. For SuMi TRUST AM, the results reflect an investment process designed to distinguish between stocks that merely look inexpensive and those where the market may be underestimating the scope for change. The strategy begins with in-house research. SuMi TRUST AM’s analyst team covers around 800 companies, representing more than 90% of the Tokyo Stock Exchange’s market capitalisation, and conducts regular company interviews to build proprietary views on earnings, business quality and management direction. These insights feed into the strategy’s proprietary free cash flow model, which is used to estimate intrinsic value with greater precision than approaches that rely heavily on market consensus. This allows the company “to form a more differentiated view of mispricing and upside potential”, says Zhangwenzheng Jing, chief portfolio manager for the Japan Value Focus Strategy. But valuation is only part of the process. A defining feature of the strategy is its emphasis on catalysts that lead to price appreciation in undervalued stocks. Rather than waiting passively for sentiment to improve, the team looks for evidence that a company has a realistic path to re-rating. These catalysts typically fall into three areas: structural reforms, enhanced shareholder returns and competitive advantages. They are incorporated into the portfolio through a “Final Alpha” score that blends quantitative and qualitative assessments on a 50:50 basis, with additional controls applied through sector, size, liquidity and Barra-based risk management. “Successful investing in undervalued stocks requires careful qualitative judgment to assess catalysts for price appreciation and avoid value traps,” explains Jing. In his view, these “triggers for change are viewed as opportunities to generate alpha”. This philosophy goes to the heart of the strategy: not simply buying low valuations, but identifying where reform, capital discipline or business momentum could prompt the market to take a fresh look. Catalysts for re-rating Recent holdings illustrate how the process works in practice. Konica Minolta, an electric manufacturer specialising in office-related equipment such as printers, was selected on the basis of structural reform after a prolonged period of weak performance linked to declining demand in paper printing. The company announced measures to strengthen management systems and improve resource allocation, while also taking impairment losses and divesting unprofitable subsidiaries. SuMi TRUST AM saw these actions as signs of genuine progress and initiated a position in April 2025. By November 2025, the stock had risen 75% from the initial purchase price. Kajima, a construction company, represented a different kind of opportunity. Here, the catalyst was stronger shareholder returns. The company’s medium-term plan targeted a payout ratio of 40%, while buybacks and dividend increases strengthened the case for a re-rating. The team also identified significant undervaluation from a free cash flow perspective. SuMi TRUST AM initiated a position in November 2024, and by the end of November 2025 the stock had appreciated 113% from the original purchase price. Mitsui Mining & Smelting provided a third route to value creation through competitive advantage. The company produces materials that reduce transmission loss in high-frequency signals, an increasingly important capability for AI servers and data centres. SuMi TRUST AM identified technological leadership, market share strength and rising end-demand, alongside what it considered clear undervaluation. By the end of November 2025, the shares had appreciated 341% from the initial purchase price. For Jing, the strategy’s appeal lies in this combination of discipline and selectivity. “By integrating rigorous quantitative analysis with disciplined qualitative judgment”, the Japan Value Focus Strategy seeks to deliver “superior risk-adjusted returns”, he says. In a market increasingly shaped by corporate reform, shareholder focus and industrial change, SuMi TRUST AM’s sophisticated approach has offered investors a differentiated route into Japanese equities that has delivered results. That combination of research depth, valuation discipline and catalyst identification continues to shape the strategy’s approach to uncovering long-term opportunities in Japan’s large-cap market. 
Research depth and valuation discipline
