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Longport WhaleLongport Whale
Client Stock Margin

Update Client Long Margin Ratio

Updates a client's long-position stock margin-ratio record, including its margin-ratio tiers and expiry date.

Request parameters

  • Required: counter_id (security code), aaid (securities account), im_factor (initial margin ratio), mm_factor (maintenance margin ratio), fm_factor (force-liquidation margin ratio), mcm_factor (margin-call margin ratio), expire_at (expiry date)
  • Optional: position_side (position side), short_sell_status (short-sell status), short_selling_open_qty (short-open quantity), short_selling_close_qty (short-close quantity), audit_frontend_resource (caller-provided audit context), and others
  • See the field notes for each field's format, value range, and business meaning.

Business notes

The updated ratios immediately become the client's effective configuration for that security, affecting financing capacity, maintenance margin, and force-liquidation determination.

Risk warning

This operation directly changes a live margin configuration. Verify the target client, security, and every margin-ratio value before calling.

Result

On success, the margin record is updated; the resulting state and returned data follow the 200 response definition.

POSThttps://b-api.lbkrs.com/risk/v1/account_stock_margin_ratio/update

Authorization

AuthorizationstringheaderRequired

Send the Broker ACCESS_TOKEN as Authorization: Bearer <token>.

Permission

lb_hk_margin_ratio.account_margin_ratio_query

The Broker ACCESS_TOKEN must be granted the permission above, or the call will be rejected.

Request body application/json

counter_idstringrequired

Security code. Format is {type}/{market}/{code}, for example, stock ST/HK/700 or ST/US/AAPL, and option OP/US/AAPL270319C320000.

aaidstringrequired

Securities account

Pass the internal numeric ID of the customer's securities account (aaid), not the securities account number account_no (such as H00000000) or the customer ID member_id. One customer can have multiple aaid values.

im_factornumberrequired

Initial margin ratio

mm_factornumberrequired

Maintenance margin ratio

fm_factornumberrequired

Force-liquidation margin ratio

mcm_factornumberrequired

Margin Call ratio

expire_atnumberrequired

Expiry date

remarkstring

Remark

position_sidenumber

Position side

short_sell_statusstring

short_sell_status

short_selling_open_qtynumber

short_selling_open_qty

short_selling_close_qtynumber

short_selling_close_qty

audit_frontend_resourceobject

audit_frontend_resource

Responses

HTTP 200OK
Standard response envelopecodemessagedata
dataobjectdata structure
ticket_idstring
HTTP 400Bad request. Check the business error code in code and the error details in message.
Standard response envelopecodemessagedata
dataobjectdata structure

No nested fields

HTTP 401The user is not authenticated, or the login session has expired.
Standard response envelopecodemessagedata
dataobjectdata structure

No nested fields

HTTP 403The current account is not authorized to use this feature. Grant the required permission to the account in User Permission.
Standard response envelopecodemessagedata
dataobjectdata structure

No nested fields

HTTP 408The request timed out. Check the business error code in code and the error details in message.
Standard response envelopecodemessagedata
dataobjectdata structure

No nested fields

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