Skip to main content

Atomic Vaults Developer Docs

Atomic Vaults provides trading infrastructure via API through its FINRA-licensed broker-dealer subsidiary. Integrate U.S. and Hong Kong equities, ETFs, and options into your platform — Atomic Vaults handles clearing, settlement, and regulatory compliance on your behalf.

What You Get​

Multi-Market Trading — Access U.S. and Hong Kong markets through dedicated regional APIs. Japan, Korea, and Taiwan are coming soon.

Full Product Coverage — Trade equities, ETFs, listed options (including multi-leg strategies), and overnight options (US only). Support for market, limit, stop, and stop-limit orders across extended trading sessions (24h coverage via AV1–AV5 sessions).

Turnkey Compliance — Atomic Vaults is your FINRA-licensed counterparty. You don't need to become a broker-dealer or clearing member to offer securities trading.

Omnibus Account Model — Operate under a single initiator (omnibus) account and manage your users as end-customer (EC) sub-accounts. Transfer positions and cash between EC accounts programmatically.

REST + WebSocket APIs — RESTful endpoints for orders, positions, balances, margin, and account management. WebSocket channels for real-time order events and options market data.

Choose Your Path​

For Centralized Exchanges (CEX) →​

You run a crypto exchange and want to add regulated equities and options trading for your users. Atomic Vaults lets you offer stocks, ETFs, and options alongside crypto — without building broker-dealer infrastructure.

For Broker-Dealers (B2C) →​

You're a non-US broker-dealer looking to offer U.S. and Hong Kong securities trading to your retail customers. Atomic Vaults provides the market access, clearing, and compliance layer so you can focus on your client experience.

API References​