The Master Trust Bank of Japan, an affiliate of Mitsubishi UFJ Trust and Banking, has reached a significant milestone with its assets under custody surpassing 1 quadrillion yen, according to a report dated August 28, 2026 [1]. This figure represents a threefold increase over the past decade, a growth attributed to a historic rally in Japan's stock market and the expansion of NISA, the government's tax-advantaged investment program [1].
The bank acts as a custodian for institutional investors and plays a pivotal role in the Japanese financial system [1]. The surge in assets under custody is seen as a direct result of both robust equity market performance and government initiatives aimed at encouraging broader public participation in investment activities [1].
The expansion of NISA (Nippon Individual Savings Account) has been particularly influential, with more individuals utilizing tax benefits to invest in stocks and other financial instruments, thereby contributing to the dramatic increase in investment assets managed by the Master Trust Bank of Japan [1].
This rapid growth in assets under custody is interpreted as a sign of rising confidence in Japan’s capital markets and the effectiveness of policies designed to channel domestic savings into higher-return investments [1].
CONCLUSION
The Master Trust Bank of Japan's assets under custody topping 1 quadrillion yen underscores the strong momentum in Japan's capital markets and the success of government initiatives like NISA. This development signals robust investor confidence and a significant shift of domestic savings into investment assets.