Connect to Mizuho Securities USA with ZagTrader

Who is Mizuho Securities USA?

Mizuho Securities USA LLC is the U.S. broker-dealer of Mizuho Financial Group, one of Japan's largest banking and financial groups. Operating from the United States as part of Mizuho's global corporate and investment banking franchise, the firm provides institutional clients with fixed income, equities, investment banking, and research services. It pairs the local presence of a registered U.S. broker-dealer with the balance-sheet depth and international reach of a major Japanese banking group.

Mizuho is particularly recognized for its fixed income franchise, alongside equities sales and trading, capital-markets origination, and a research platform that supports institutional decision-making across sectors. For asset managers, hedge funds, banks, and brokers, that combination makes Mizuho a relevant U.S. execution and markets counterparty within a globally connected group. Reaching that counterparty over a stable, well-monitored connection is a practical requirement for any desk that routes orders to it, and that is the role ZagTrader is built to fill.

How ZagTrader connects and routes to Mizuho

ZagTrader provides institutional connectivity to Mizuho Securities USA through FIX sessions and APIs, established and tested so that orders, executions, and acknowledgements travel over resilient, monitored links. Orders are routed electronically from the trading desk to Mizuho's execution services, with the products and order types available determined by the client's own agreements and onboarding with the firm.

Connectivity is delivered as part of ZagTrader's integrated Order Management System (OMS) and Execution Management System (EMS). Traders work from a unified, multi-asset blotter that can span Mizuho alongside other brokers and venues, apply pre-trade compliance and risk checks, and use smart order routing logic to direct orders appropriately before they leave the desk. Drop-copy sessions provide an independent, real-time stream of execution and order-status messages for reconciliation, surveillance, and risk monitoring. Because order management, execution, routing, and post-trade share one platform, routing to Mizuho fits into the same auditable workflow used across the rest of the desk's activity, with no brittle hand-offs between disconnected systems.

• FIX sessions and APIs for order entry, execution reports, and acknowledgements.
• Electronic order routing to Mizuho from a unified multi-asset blotter.
• Smart order routing managed within the OMS/EMS before orders are sent.
• Drop-copy sessions for independent reconciliation and surveillance.
• Pre-trade compliance and risk checks applied before orders leave the desk.

What you can access through Mizuho

As the U.S. broker-dealer of a global banking group, Mizuho Securities USA offers execution and markets services with notable depth in fixed income, complemented by equities and related products. Routing through it via ZagTrader's multi-asset platform lets a desk reach that coverage from a single, consistent workflow rather than maintaining separate tools per product line. The instruments, markets, and services available always depend on a client's own agreements and onboarding with the firm.

• Fixed income — government, agency, corporate, and related debt instruments, a core Mizuho strength.
• Equities — cash equity sales, trading, and related execution services.
• Listed derivatives — futures and options for hedging and risk management.
• Capital markets and research — origination coverage and institutional research supporting trading decisions.
• Other instruments available under the relevant client agreements.

Settlement and post-trade

Execution is only the first step in the trade lifecycle, and ZagTrader is built to carry flow routed to Mizuho all the way through to booking. Fills captured over FIX and confirmed via drop-copy feed straight into the platform's post-trade processing, so that trades, allocations, and positions stay consistent without manual re-keying.

The platform supports trade confirmation and allocation, generation of settlement instructions, and reconciliation against counterparty, custodian, and clearing records. Settlement itself takes place through the relevant U.S. market infrastructure and the client's own custody and clearing arrangements; ZagTrader's role is to manage the order and post-trade data flow accurately around that process. Reporting and audit-ready record keeping are produced from the same source of truth that runs from order inception, helping desks meet their internal control and regulatory obligations across the jurisdictions in which they operate.

Why route to Mizuho through ZagTrader

Routing to Mizuho Securities USA through ZagTrader means consolidating execution, routing, risk, compliance, and post-trade onto one multi-asset front-to-back platform instead of stitching together separate systems for each function. A single OMS/EMS blotter spans Mizuho alongside other supported brokers and venues, so traders manage their full book in one place and operations work from one consistent set of records. For desks that value Mizuho's fixed income coverage within a globally connected group, that means folding the counterparty into an existing workflow rather than standing up a separate stack.

With deep roots in the MENA and GCC region and global reach, ZagTrader gives international and regional desks a single platform to access U.S. counterparties such as Mizuho. FIX and API connectivity with drop-copy reconciliation give desks confidence that what was sent, executed, and booked all agree, while smart order routing and pre-trade controls keep execution disciplined. As needs grow, the same platform scales to additional counterparties, asset classes, and markets without re-platforming, making ZagTrader a durable foundation for desks that route institutional flow to Mizuho and beyond.

• One multi-asset OMS/EMS for Mizuho alongside other brokers and venues.
• FIX and API connectivity with drop-copy reconciliation.
• Smart order routing and pre-trade compliance and risk controls.
• Integrated post-trade flow from execution through allocation, settlement, and reporting.
• Scales to more counterparties, asset classes, and markets without re-platforming.