> ## Documentation Index > Fetch the complete documentation index at: https://hoalulab.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Giao dịch lô lẻ > Cập nhật giao dịch và bid/ask lô lẻ. ## AsyncAPI ````yaml vi/asyncapi/ssi.2026-07-29.asyncapi.yaml oddlotStream id: oddlotStream title: Giao dịch lô lẻ description: Cập nhật giao dịch và bid/ask lô lẻ. servers: - id: production protocol: wss host: stream.ssi.com.vn bindings: [] variables: [] address: /ws/v3 parameters: [] bindings: [] operations: - &ref_2 id: onOddlotUpdates title: Nhận cập nhật giao dịch lô lẻ type: send messages: - &ref_4 id: update contentType: application/json payload: - name: Cập nhật giao dịch lô lẻ description: Giao dịch và bid/ask lô lẻ. type: object properties: - name: channel type: string description: DATA required: true - name: topic type: string required: true - name: data type: object required: true properties: - name: s type: string description: Mã chứng khoán. required: true - name: t type: string description: Thời gian giao dịch, định dạng `YYYY/MM/DD HH:mi:ss`. required: true - name: p type: string description: Giá khớp lô lẻ. required: true - name: q type: string description: Khối lượng khớp lô lẻ. required: true - name: bids type: array description: Danh sách mức giá mua lô lẻ `[price, quantity]`. required: true properties: - name: item type: array required: false properties: - name: item type: string required: false - name: asks type: array description: Danh sách mức giá bán lô lẻ `[price, quantity]`. required: true properties: - name: item type: array required: false properties: - name: item type: string required: false headers: [] jsonPayloadSchema: type: object additionalProperties: false required: - channel - topic - data properties: channel: type: string const: DATA x-parser-schema-id: topic: type: string pattern: >- ^oddlot\.(index|exchange|[A-Za-z0-9_-]+(?:-[A-Za-z0-9_-]+)*|\*)(?:@(tick|1m|5m))?$ x-parser-schema-id: data: type: object additionalProperties: false required: - s - t - p - q - bids - asks properties: s: type: string description: Mã chứng khoán. x-parser-schema-id: t: type: string description: Thời gian giao dịch, định dạng `YYYY/MM/DD HH:mi:ss`. x-parser-schema-id: p: type: string description: Giá khớp lô lẻ. x-parser-schema-id: q: type: string description: Khối lượng khớp lô lẻ. x-parser-schema-id: bids: description: Danh sách mức giá mua lô lẻ `[price, quantity]`. type: array items: type: array minItems: 2 maxItems: 2 items: type: string x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: asks: description: Danh sách mức giá bán lô lẻ `[price, quantity]`. type: array items: type: array minItems: 2 maxItems: 2 items: type: string x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: title: Cập nhật giao dịch lô lẻ description: Giao dịch và bid/ask lô lẻ. example: |- { "channel": "DATA", "topic": "oddlot.SSI@tick", "data": { "s": "SSI", "t": "2026/07/29 09:16:05", "p": "45.50", "q": "80", "bids": [ [ "45.45", "50" ], [ "45.40", "30" ] ], "asks": [ [ "45.55", "40" ], [ "45.60", "20" ] ] } } bindings: [] extensions: - id: x-parser-unique-object-id value: update bindings: [] extensions: &ref_0 - id: x-parser-unique-object-id value: oddlotStream - &ref_1 id: onOddlotSubscription title: Đăng ký luồng giao dịch lô lẻ type: receive messages: - &ref_3 id: subscribeRequest contentType: application/json payload: - name: Yêu cầu đăng ký market data description: Đăng ký các topic trên channel DATA. type: object properties: - name: method type: string description: SUBSCRIBE required: true - name: channel type: string description: DATA required: true - name: topics type: array description: Danh sách topic market data; mỗi phần tử là một chuỗi topic. required: true properties: - name: item type: string required: false headers: [] jsonPayloadSchema: type: object additionalProperties: false required: - method - channel - topics properties: method: type: string const: SUBSCRIBE x-parser-schema-id: channel: type: string const: DATA x-parser-schema-id: topics: type: array minItems: 1 uniqueItems: true description: Danh sách topic market data; mỗi phần tử là một chuỗi topic. items: type: string minLength: 1 pattern: >- ^(trade|quote|room|put|oddlot)\.(index|exchange|[A-Za-z0-9_-]+(?:-[A-Za-z0-9_-]+)*|\*)(?:@(tick|1m|5m))?$|^market\.(index|exchange|[A-Za-z0-9_-]+(?:-[A-Za-z0-9_-]+)*|\*)$ x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: title: Yêu cầu đăng ký market data description: Đăng ký các topic trên channel DATA. example: |- { "method": "SUBSCRIBE", "channel": "DATA", "topics": [ "trade.SSI", "quote.ACB-SSI-GVR-KDH", "room.vn30", "put.hose", "oddlot.SSI", "market.hose" ] } bindings: [] extensions: - id: x-parser-unique-object-id value: subscribeRequest bindings: [] extensions: *ref_0 sendOperations: - *ref_1 receiveOperations: - *ref_2 sendMessages: - *ref_3 receiveMessages: - *ref_4 extensions: - id: x-parser-unique-object-id value: oddlotStream securitySchemes: [] ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.