Alpaca, an API-focused brokerage, has extended its strategic partnership with Citadel Securities in Japan to leverage expertise in brokerage infrastructure, trade execution, clearing, and recordkeeping for U.S. Stocks and Options trading, providing Japanese brokers with access to world-class trade execution services and scalable end-user recordkeeping systems in one stop. Alpaca's local subsidiary has served financial institutions in Japan for the past decade through its database technology and brokerage services, contributing to wealth technology innovation in Japan. The partnership aims to improve the trading experience for Japanese investors of all sizes by delivering Citadel Securities' leading execution platform to Japanese brokers. Alpaca is well-known in the developer community for offering APIs that are used by tens of thousands of monthly active developers globally.