susten Capital Management is an independent, Tokyo-based investment manager founded in 2019 that creates and manages quantitative investment trusts and runs SUSTEN, an automated discretionary asset-management service for retail investors, supported by an AI tool that explains fund products. Founded by two former Goldman Sachs Asset Management portfolio managers, it holds its own investment-trust management license and handles fund creation through distribution end-to-end, and holds a patent for its NISA-optimization technology. Assets under management surpassed roughly 13 billion yen in August 2026, 3.3 times the level at the end of 2025.
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Sep 18, 2026
Latest raise
Funding activity · 1 round
Sep 18, 2026
JPY 1B
Series A
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