name: TradeStation API Vocabulary
description: >-
  Domain vocabulary for the TradeStation brokerage and trading API covering
  order management, market data, options trading, and brokerage account
  concepts for building automated trading applications.
tags:
  - Brokerage
  - Cryptocurrency
  - Finance
  - Market Data
  - Options
  - Order Execution
  - Trading
terms:
  - term: Order Type
    description: >-
      The mechanism by which an order is executed. TradeStation supports
      Market, Limit, StopMarket, StopLimit, TrailingStop, and
      TrailingStopLimit order types.
    values:
      - Market: Execute immediately at current market price
      - Limit: Execute only at specified price or better
      - StopMarket: Become market order when stop price is reached
      - StopLimit: Become limit order when stop price is reached
      - TrailingStop: Stop price trails market price by specified amount
      - TrailingStopLimit: Trailing stop that becomes a limit order
  - term: Time in Force
    abbreviation: TIF
    description: >-
      An instruction specifying how long an order remains active before
      being cancelled if not filled.
    values:
      - Day: Active only during the current trading session
      - GTC: Good Till Cancelled — remains active until filled or cancelled
      - GTD: Good Till Date — active until specified expiration date
      - IOC: Immediate Or Cancel — fill immediately or cancel
      - FOK: Fill Or Kill — fill entire quantity immediately or cancel
      - OPG: At The Opening — execute at market open
      - CLO: At The Closing — execute at market close
  - term: Trade Action
    description: >-
      The direction and intent of an order specifying whether buying or
      selling, and for options, whether opening or closing a position.
    values:
      - Buy: Purchase shares, futures, or crypto
      - Sell: Sell existing long position
      - BuyToOpen: Purchase options to open new long position
      - BuyToClose: Purchase options to close existing short position
      - SellToOpen: Sell options to open new short position
      - SellToClose: Sell options to close existing long position
      - SellShort: Sell borrowed shares to open short position
      - BuyToCover: Buy shares to close existing short position
  - term: OCO Order
    description: >-
      One Cancels the Other — a paired order where the execution of one
      order automatically cancels the other. Used for bracket orders to
      set both a profit target and stop loss simultaneously.
    synonyms:
      - One Cancels Other
  - term: OSO Order
    description: >-
      Order Sends Order — a conditional order where the execution of a
      primary order triggers the submission of one or more secondary orders.
    synonyms:
      - Order Sends Order
  - term: Bracket Order
    description: >-
      A group order strategy that combines an entry order with a profit
      target and a stop loss order, automatically managing risk around
      a position.
    synonyms:
      - BRK
  - term: OAuth2 Authorization Code
    description: >-
      The authentication flow used by TradeStation where users authorize
      the application via the TradeStation sign-in page and receive an
      access token for API calls.
  - term: Bar Chart
    description: >-
      A representation of price history in OHLC format (Open, High, Low,
      Close) aggregated over time intervals such as minute, daily, weekly,
      or monthly.
    synonyms:
      - OHLC Bar
      - Candlestick Data
  - term: Session Template
    description: >-
      A configuration option for bar chart data that controls which
      trading session data is included (regular hours, pre-market,
      after-hours, or combined).
    values:
      - Default: Regular trading hours only
      - USEQPre: Pre-market session
      - USEQPost: After-hours session
      - USEQPreAndPost: Pre and post-market combined
  - term: Route
    description: >-
      The trading destination to which an order is directed for execution.
      TradeStation supports intelligent routing (automatic best execution)
      and direct market routing to specific exchanges or ECNs.
    values:
      - Intelligent: Automatic best execution routing
  - term: OHLC
    description: >-
      Open, High, Low, Close — the four price data points for a bar in a
      bar chart representing the opening price, highest price, lowest price,
      and closing price for a given time interval.
  - term: Underlying Symbol
    description: >-
      The financial instrument upon which an option or futures contract is
      based. For stock options, the underlying is the stock itself.
  - term: Expiration Date
    description: >-
      The date on which an options contract expires. After this date the
      option becomes worthless if not exercised.
    types:
      - Monthly: Standard third Friday monthly expiration
      - Weekly: Short-term weekly expiration
      - Quarterly: End-of-quarter expiration
      - EOM: End-of-month expiration
  - term: Strike Price
    description: >-
      The fixed price at which the holder of an option can buy (call) or
      sell (put) the underlying security.
  - term: Simulator Server
    description: >-
      TradeStation's paper trading environment that mirrors production
      functionality but uses simulated funds. Available at
      sim-api.tradestation.com for testing without financial risk.
    synonyms:
      - Paper Trading
      - SIM
  - term: Buying Power
    description: >-
      The amount of capital available in a brokerage account to purchase
      additional securities, factoring in cash balance, margin capacity,
      and existing positions.
  - term: Unrealized P/L
    description: >-
      Unrealized Profit/Loss — the gain or loss on open positions based
      on current market value versus average entry price. Not realized
      until the position is closed.