generated: '2026-08-08'
method: searched
source: https://docs.exchange.bullish.com/rest/changelog
docs:
  rest: https://docs.exchange.bullish.com/rest/changelog
  websocket: https://docs.exchange.bullish.com/websocket/ws-api-change-log
scheme: dated-monthly
current_version: v2
summary: >-
  Bullish keeps two dated changelogs — one for REST and one for the WebSocket API —
  organised by year-month rather than by semantic version. Additions and breaking
  removals are both called out. Recent window captured below; the live changelog is
  the source of truth.
window:
  from: '2025-11'
  to: '2026-07'
entries:
  - date: '2026-07'
    type: addition
    highlight: >-
      New REST API — Get Delegated Trading Accounts, for listing trading accounts
      delegated to inter-dealer brokers.
    breaking: false
  - date: '2026-07'
    type: update
    highlight: >-
      Crypto withdrawal instructions enhanced with a `locked` parameter and related
      response fields.
    breaking: false
  - date: '2026-06'
    type: addition
    highlight: >-
      Portfolio margin simulation supports `priceVolOffsetParams` for adjustments.
    breaking: false
  - date: '2026-06'
    type: addition
    highlight: >-
      New endpoint — Simulate Portfolio Margin in Bulk, for running multiple
      portfolio margin simulations in one call.
    breaking: false
  - date: '2026-06'
    type: addition
    highlight: >-
      Three new auction endpoints — Get Auction by Symbol, Get Auction NOII, and
      Get Historical Auction Results.
    breaking: false
  - date: '2026-06'
    type: addition
    highlight: 'Order creation supports the GTX (Good Till Crossing) timeInForce value.'
    breaking: false
  - date: '2026-06'
    type: update
    highlight: 'Market endpoints now include `auctionEnabled` and `auctionPriceCollar`.'
    breaking: false
  - date: '2026-04'
    type: update
    highlight: >-
      Trading account endpoints include OTC-related fees — `makerOtcFee`,
      `takerOtcFee`, `brokerFee`.
    breaking: false
  - date: '2026-04'
    type: update
    highlight: >-
      Derivatives Positions now includes a `greeks` object with delta, gamma, theta
      and vega.
    breaking: false
  - date: '2026-03'
    type: addition
    highlight: New OTC trade approval command and IDB-related OTC endpoints.
    breaking: false
  - date: '2026-03'
    type: addition
    highlight: >-
      New REST API — Get Historical Markets, for retrieving historical and expired
      markets.
    breaking: false
  - date: '2026-02'
    type: removal
    highlight: >-
      Deprecated fields `makerFee` and `takerFee` removed from Get Trading Accounts.
    breaking: true
  - date: '2025-12'
    type: update
    highlight: >-
      Get Unconfirmed OTC Trade enhanced with timestamp and expiry datetime fields.
    breaking: false
  - date: '2025-11'
    type: addition
    highlight: New endpoint for retrieving unconfirmed OTC trade details.
    breaking: false
  - date: '2025-11'
    type: removal
    highlight: >-
      Deprecated market fields removed — `maxPriceLimit`, `minPriceLimit`, and fee
      fields.
    breaking: true
coverage:
  entries_captured: 15
  breaking_in_window: 2