Mizuho Securities Builds Next-Generation Data Center With HPE
Mizuho Securities is taking steps to strengthen its technology infrastructure as the financial services company prepares to handle increasingly complex financial simulations and support the next phase of its global business strategy. The company has selected HPE to deploy an HPE Cray XD2000 compute system featuring direct liquid cooling as part of a new data center designed to provide greater computing capacity, efficiency and flexibility.
The initiative is expected to support Mizuho Securities as it expands its global financial services operations and develops higher-value products for customers in Japan and international markets. Installation of the liquid cooling infrastructure, network equipment and related systems is scheduled to begin in fall 2026, with the new computing environment targeted to enter production in mid-2027.
The project represents an important step in Mizuho Securities’ broader effort to modernize its financial technology infrastructure. As financial markets become more data-intensive and pricing and risk-management models grow more sophisticated, financial institutions increasingly require computing environments capable of processing large volumes of calculations while maintaining consistent performance.
Growing Demand for Financial Simulation
Mizuho Securities’ Global Markets business provides a wide range of financial products and services to customers in Japan and around the world. Its offerings include public and corporate bonds, equities and derivatives, all of which require sophisticated technology infrastructure to support trading, pricing, risk management and other financial activities.
Among the most computationally intensive processes are simulations used for derivatives pricing and the measurement of market risk and counterparty credit risk. According to Mizuho Securities, these activities currently involve more than 360 million calculations every day.
The scale of these calculations continues to increase as the company’s business grows and financial models become more sophisticated. More complex products, larger datasets, evolving regulatory requirements and increasingly detailed risk-management processes can all contribute to higher computing requirements.
For Mizuho Securities, expanding processing capacity is therefore not simply a technology upgrade. It is directly connected to the company’s ability to support its customers, manage financial risks and develop new products.
The company is now looking to create an infrastructure platform that can accommodate these requirements while also providing a foundation for future technologies such as artificial intelligence and GPU-accelerated computing.
HPE Cray XD2000 Selected for High-Performance Computing
At the center of the initiative is the HPE Cray XD2000, a density-optimized, scale-out compute platform designed for demanding workloads.
Mizuho Securities plans to deploy the system in a new data center that has been specifically designed to support direct liquid cooling. Unlike traditional air-cooling approaches, direct liquid cooling transfers heat away from high-performance computing components using liquid-based cooling technology.
The approach is particularly relevant as computing systems become more powerful and generate greater amounts of heat. Higher-density infrastructure can require more sophisticated cooling capabilities to maintain stable operating conditions.
For Mizuho Securities, the move to liquid cooling is intended to provide the capacity needed for its current computational workloads while also allowing the organization to expand its infrastructure in the future.
HPE said the configuration can provide up to a 20% improvement in performance per kilowatt compared with air-cooled solutions while consuming 15% less power. Mizuho Securities expects the new infrastructure to deliver approximately 1.6 times the performance per server node compared with its existing environment.
These improvements could become increasingly important as the company scales its computing environment and evaluates additional high-performance workloads.
Transition From Air Cooling to Liquid Cooling
The new data center represents a significant infrastructure change for Mizuho Securities because the organization is transitioning from traditional air cooling to direct liquid cooling.
Cooling is a critical consideration for financial institutions operating high-performance computing environments. Large-scale simulations can require substantial computing resources, and maintaining reliable performance requires infrastructure capable of managing the heat generated by those systems.
Direct liquid cooling allows heat to be removed closer to the source, potentially enabling greater compute density and improved energy efficiency.
Mizuho Securities intends to use the new facility to evaluate how the technology performs under actual production conditions. The organization expects to begin with eight server nodes and then increase the number of servers and racks in stages.
This phased approach will allow the company to assess operational performance and determine how the new cooling architecture can support future expansion.
Supporting Mizuho’s Global Business Strategy
The technology investment is also closely connected to Mizuho Securities’ wider business objectives.
Mizuho Financial Group is pursuing a Global Corporate and Investment Banking strategy designed to integrate commercial banking and investment banking capabilities across international markets. Mizuho Securities plays an important role in this strategy through its global markets and investment banking activities.
As the company’s international business expands, its technology infrastructure must be able to support increasing transaction volumes, more sophisticated products and greater computational complexity.
Ken Utsunomiya, Operating Officer, CIO, CPrO, Head of Global IT and Head of Global Operations at Mizuho Securities, said strengthening computing infrastructure is essential to executing the company’s strategy.
The organization views the shift from air cooling to liquid cooling as part of its effort to improve computing capacity while maintaining reliable operations. The enhanced infrastructure is expected to help Mizuho Securities respond to increasingly demanding financial simulation requirements and support the delivery of higher-value services to a broader customer base.
Preparing for Artificial Intelligence Workloads
Another important element of the initiative is its potential role in Mizuho Securities’ future artificial intelligence strategy.
Financial institutions are increasingly exploring AI for areas such as market analysis, risk management, customer services, operational automation, fraud detection and financial modeling. These workloads can require significant computing resources, particularly when organizations begin deploying large-scale machine learning models or other GPU-intensive applications.
Mizuho Securities plans to use its new computing environment to evaluate the effectiveness of direct liquid cooling while exploring GPU-accelerated computing for a future private AI infrastructure.
The ability to support GPUs could become particularly important as AI workloads expand. GPUs can deliver high levels of parallel processing and are widely used for machine learning and other computationally intensive applications.
By designing its infrastructure with future expansion in mind, Mizuho Securities can create a pathway toward incorporating additional accelerated computing technologies without relying exclusively on its existing architecture.
The initial eight-node deployment will therefore serve not only immediate financial simulation requirements but also as an opportunity to understand how liquid-cooled infrastructure can support the company’s longer-term technology roadmap.
Operational Stability and Monitoring
Introducing a new cooling architecture also creates operational requirements that differ from conventional air-cooled systems. To address these requirements, HPE Services will provide monitoring and maintenance support for the new infrastructure.
The services will include real-time visibility into the operating condition of the direct liquid cooling and power infrastructure. Automated alerts for potential coolant leaks will also be provided.
For a financial institution, infrastructure reliability is especially important. Financial simulations, trading-related activities and risk calculations can be time-sensitive, and disruptions to computing infrastructure can affect business operations.
Monitoring capabilities can help technology teams identify potential issues earlier and respond to changes in system conditions. Mizuho Securities’ decision to incorporate operational monitoring alongside the new hardware reflects the importance of maintaining reliable performance as it moves into liquid-cooled computing.
A Longstanding HPE Relationship
The project also builds on an established relationship between HPE and Mizuho Securities.
Hirokazu Mochizuki, senior vice president and managing director for HPE Japan, said HPE systems have supported Mizuho Securities’ financial business for many years. He described the selection of the HPE Cray XD2000 with direct liquid cooling as an important milestone in the relationship.
HPE brings more than five decades of experience in liquid cooling and high-performance computing technology to the project. That expertise is particularly relevant as financial institutions increasingly seek infrastructure capable of supporting demanding simulations, AI applications and other high-performance workloads.
For HPE, the deployment also represents an opportunity to support the modernization of computing infrastructure within Japan’s financial sector.
Scalable Infrastructure for Future Growth
Mizuho Securities is not planning to stop with the initial eight-server deployment. The organization expects to expand its server and rack capacity progressively while evaluating the benefits of the technology in its production environment.
This staged approach gives the company an opportunity to measure performance, power efficiency, operational stability and workload behavior before making larger infrastructure investments.
The ability to scale is particularly important because financial computing requirements can change rapidly. Growth in trading activity, new financial products, regulatory requirements and increasingly sophisticated risk models can all increase demand for computational resources.
A scalable architecture can allow Mizuho Securities to respond to these changes without having to completely redesign its infrastructure each time additional capacity is required.
Building a Foundation for Next-Generation Financial Technology
The planned production deployment in mid-2027 marks the beginning of a broader infrastructure transformation rather than simply the installation of a new computing system.
By combining the HPE Cray XD2000 with direct liquid cooling, enhanced monitoring and a data center designed for future expansion, Mizuho Securities is establishing a technology foundation for increasingly demanding financial workloads.
The initiative highlights how computing infrastructure has become closely linked to competitiveness in financial services. As financial models grow more complex and customers demand faster and more sophisticated products, institutions need computing systems that can deliver performance while controlling energy consumption and maintaining operational reliability.
For Mizuho Securities, the new environment is expected to strengthen the company’s ability to process financial simulations, quantify market and counterparty risks, and support the development of higher-value financial services.
At the same time, its planned evaluation of GPU-accelerated computing could help prepare the organization for a new generation of private AI infrastructure.
The combination of high-performance computing, liquid cooling and future AI readiness positions the project as a significant technology investment for Mizuho Securities. As the company expands its global business and continues to develop increasingly sophisticated financial products, the infrastructure established through this initiative could provide the computing capacity and flexibility required to support that growth.
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