Comprehensive Prime Solutions
Supporting Efficiency, Cost Optimization,
and Strategic Growth in Global Markets

Global Prime Services

Global access to execution, financing, and custody all through a client-focused platform that reduces costs and strengthens risk management.

Securities Borrowing & Lending

Flexible solutions enhance liquidity and portfolio returns. Borrow for short-selling or lend idle assets to generate passive income.

Portfolio & Investment Solutions

We design diversified strategies matched to your goals. Using multifactor models and global access, we deliver sustainable investment opportunities.

We are committed to protecting your capital while helping you capture opportunities that maximise the long-term value of your investments.

Our prime brokerage team works alongside you to design tailored strategies that align with your objectives, manage risk effectively, and enhance performance across global markets.

By combining deep expertise, access to diverse asset classes, and cutting-edge technology, we ensure your portfolio is positioned for both stability and growth.

Guidance for funds, family offices, and institutions
Solutions across equities, bonds, derivatives, and financing
Research and data-driven decisions
Equal, client-first service for every investor

Expand Your Reach with
Astem Co International Prime Services

Since its establishment in 1962, Astem Co has developed into a trusted prime brokerage partner, recognised for delivering reliable execution, financing, and custody solutions.

With deep roots in Japan and an expanding international footprint, we bring investors a perspective shaped by both regional expertise and global market insight.

Astem Co provides clients with broad access to opportunities across global markets, supported by extensive research coverage and strong counterparty networks.

Our insights and connectivity form the core of our services, enabling investors to identify, evaluate, and act on strategies with confidence.

We value diversity for the unique perspectives it brings to our strategies

At Astem Co, our prime services team is made up of experienced professionals from diverse backgrounds across finance, trading, technology, and risk management.

This blend of expertise enables us to deliver well-rounded solutions and fresh insights for our global clients.

We are making global markets straightforward and accessible to all of our clients

At Astem Co, we take the time to understand each client’s objectives and provide tailored resources to support their strategies. Our dedicated specialists are committed to offering practical guidance and responsive support at every step.

Before focusing solely on execution, we consider every element of effective prime brokerage

Prime services are more than trade execution alone. They involve financing, custody, clearing, and access to liquidity, all working together to support our clients’ strategies. At Astem Co, we take a holistic approach that balances risk management, efficiency, and growth.

Trade execution across multiple asset classes
Custody, clearing, and settlement solutions
Securities lending and financing
Transparent reporting and client support

Prime brokerage expertise and strategic solutions for institutions worldwide

As a Japan-regulated prime broker headquartered in Osaka, Astem Co, provides comprehensive services to hedge funds, family offices, and financial institutions. Our global reach, innovative technology, and dedicated team ensure clients receive the tools and support needed to compete in international markets.

Cross-asset margining and hybrid prime models
Margin financing and liquidity access
High-touch and algorithmic execution services
Dedicated global coverage across key markets

Delivering insight-driven prime services to strengthen your position in global markets

At Astem Co, our approach to prime brokerage is built on clarity and precision. We combine advanced trading systems with specialist knowledge to help clients navigate complex markets with confidence.

By integrating execution, financing, and risk oversight, we ensure strategies are both effective and sustainable.

Our methodology emphasises efficiency: we align market data with client objectives, design structures that optimise liquidity, and provide continuous monitoring to keep portfolios on track.

This enables our clients to act decisively, knowing their strategies are supported by reliable infrastructure and expert guidance.

Comprehensive prime services designed
to give clients every advantage

Efficient Infrastructure

Our integrated custody, clearing, and settlement solutions simplify operations and provide support across multiple asset classes.

Liquidity and Financing

Access deep liquidity pools, securities lending, and tailored margin financing that strengthen flexibility and trading capacity.

Dedicated Expertise

Our high-touch model ensures clients receive personal attention from experienced professionals in trading, operations, and risk management.