Release Notes

API:

• WebSocket API officially released — place/amend/cancel orders, conditional orders (FCO) and account lookups (positions, max buy/sell, balances, order book) over a single WebSocket connection, with subscriptions for order and account notifications. Requires a separate scope with the tradingws:*:* prefix.
• New Batch Order — place or cancel up to 50 orders in a single call, via REST (trade-order-batch-place, trade-order-batch-cancel) or the WebSocket API (order.batchNew, order.batchCancel). Includes replay protection (batchRequestTime), idempotency by batchRequestId, and a signature over the entire request.
• New Corporate Actions API — query corporate action events (dividends, bonus shares, additional issuance, ...) by securities symbol and time range.
• New trade.index WebSocket topic — receive realtime index values. Subscribing to trade.vn30 only returns the stocks in the VN30 basket; use trade.index.VN30 to receive the index's own value. See Sub/Unsub Market Data.
• New indexsummary WebSocket topic — receive realtime index summary information: index value and change, number of advancing/declining/unchanged/ceiling/floor stocks, and total matched and put-through volume and value. Requires the stream:DATA:indexsummary scope.

SDK:

• Python v3.3.2 (2026-10-20)
• .NET v3.3.2 (2026-10-20)
• Node.js v3.3.2 (2026-10-20)
• Go v3.3.2 (2026-10-20)
• Breaking change: the Trading WebSocket is no longer experimental and moves into the main public API of all four SDKs. Python: from ssi_sdk.experimental import ... becomes from ssi_sdk import .... .NET: using SsiSdk.Experimental; becomes using SsiSdk;. Node.js: @ssi.developer/ssi-sdk/experimental becomes @ssi.developer/ssi-sdk. Go: package .../v3/experimental becomes .../v3/tradingws. The old namespaces were removed without an alias, so update your imports when upgrading. Names, signatures and behaviour are unchanged.
• Added Corporate Actions to the Market Data service in all four SDKs (today and a past date range of at most 5 days), see Corporate Actions API.
• Tutorials: added tutorial 19 — Corporate Actions and updated the Trading WebSocket samples to the new imports.

Portal:

• Added documentation and specifications for the WebSocket API, Batch Order, the Corporate Actions API and the trade.index and indexsummary topics on the Developer Portal.

API:

• Upgraded the trading WebSocket channel — the foundation for the new WebSocket API: place/amend/cancel orders, conditional orders (FCO), and account lookups over WebSocket.
• WebSocket connections now auto-renew when the client sends regular pings.
• Email notification when a FastConnect API connection expires.

SDK:

• Python v3.2.1 (2026-08-27)
• .NET v3.2.1 (2026-08-27)
• Node.js v3.2.1 (2026-08-27)
• Go v3.2.1 (2026-08-27) — fixed a missing field in SecuritiesSummary

Portal:

• No Portal changes in this release.

API:

• Added Push OTP Approval support.
• New Master Data API — end-of-day reference data.

SDK:

• Python v3.2.0 (2026-08-12)
• .NET v3.2.0 (2026-08-12)
• Node.js v3.2.0 (2026-08-12) — updated token management
• Go v3.2.0 (2026-08-12)

Portal:

• Service expiry notification with self-service renewal confirmation.
• Expiry/suspension status check based on the registered service terms.
• API Keys are automatically suspended after 3 months of inactivity.

API:

• Unified error codes (ErrCode) across API groups.
• Split portfolio change notifications into a dedicated WebSocket topic.
• Automatic fallback to database queries on cache miss.
• Fixed several information-leak issues in responses.
• Standardized the entire conditional order (FCO) flow.
• Special accounts are now hidden from account-lookup API responses.

SDK:

• Python v3.1.1 (2026-07-28)
• .NET v3.1.1 (2026-07-29) — added conditional order (FCO) support
• Node.js v3.1.1 (2026-07-29)
• Go v3.1.1 (2026-07-29) — added conditional order (FCO) support

Portal:

• Added the latest documentation and API spec to the Developer Portal.
• API Key scope/status changes now apply immediately to open connections.
• 14-day advance notice before service terms expire.
• Updated the service registration page.

API:

• Fix: order.amend — allow amending an order using only orderId.

SDK:

• Python v3.1.0 (2026-07-21) — added conditional order (FCO) support

Portal:

• No Portal changes in this release.

API:

• query.position added a querySummary parameter for derivatives accounts.
• Derivatives order placement now always returns orderId in the response.
• Fixed several Market Data API and market-data streaming issues.

SDK:

• Python v3.0.4 (2026-06-24), v3.0.5 (2026-06-26)
• .NET v3.0.5 (2026-07-02)
• Node.js v3.0.5 (2026-06-26)
• Go v3.0.4 (2026-06-25), v3.0.5 (2026-06-26)

Portal:

• Updated the Portal UI to the new design standard.

API:

• Launched the Conditional Order (FCO) API group.
• order.cancel now accepts only one of the two parameters.

SDK:

• No SDK release in this period.

Portal:

• New Developer Portal UI.
• Self-service scope and personal API Key management.

API:

• Added Accept-Language header support (en/vi).
• Added order-amendment validation rules (CBTT).
• Handle partial/full-fill messages (PF, FF) and portfolio updates via streaming.

SDK:

• No SDK release in this period.

Portal:

• Launched the Developer Portal — API docs, guides, SDK, sample code.
• Built the foundational Portal platform.

Release date: 2026-04-20

API:

• Trading API — place/amend/cancel orders, account lookups.
• Market Data API — market data, indices, OHLC.
• WebSocket — market data and trading event streaming.
• Separated the DERIVATIVES board for derivatives accounts.

SDK:

• Go v3.0.0 (2026-05-27) — first release

Portal:

• Registration via invite link, account activation with OTP verification.