3D Investment Partners Pte. Ltd.

3D Investment Partners Pte. Ltd. is a Singapore-based hedge fund manager founded in 2015 by Kanya Hasegawa. The firm specializes in Japan-focused opportunistic value investing, primarily targeting underperforming Japanese companies. Its core mission involves employing activist strategies through constructive engagement to unlock shareholder value by improving corporate governance, capital efficiency, and strategic reforms. The company's headquarters are located in Singapore.

The firm provides investment advisory and portfolio management services, managing collective investment schemes. It oversees flagship funds such as the 3D Endeavor Fund and the 3D Opportunity Fund. 3D Investment Partners focuses its investments on mid- to large-cap Japanese equities across various sectors, including consumer goods, technology, pharmaceuticals, IT services, real estate investment trusts (REITs), and heavy industry, with a particular interest in post-IPO equity investments in biotechnology, pharmaceuticals, and therapeutics.

Kanya Hasegawa serves as the firm's founder, Chief Executive Officer, and Chief Investment Officer. 3D Investment Partners is known for its active engagement with investee companies. Recent activities include increasing its stake in Square Enix Holdings to 16.48% in December 2025, becoming the second-largest shareholder, to advocate for management changes. The firm also launched a $160 million unsolicited tender offer for Japan's NTT UD REIT in January 2025, citing undervaluation. Additionally, 3D Investment Partners has been involved in public disputes, such as its June 2026 campaign against Toho Holdings' proposed poison pill and its engagement with NS Solutions.