--- updatedAt: 2026-02-05T17:09:50.000Z agentTools: projectIndex: https://docs.tradier.com/llms.txt --- # Market Data Real-time data is available to all Tradier Brokerage account holders for US-based stocks and options. If you are not a Tradier Brokerage account holder, we are unable to provide you with any real-time data solution.
### Symbology We use standard symbols for most equities and ETFs. Options require the standard OCC symbology to be used. [Investopedia has a good explanation of the symbol and its parts](https://www.investopedia.com/articles/optioninvestor/10/options-symbol-rules.asp). Warrants and preferred class (and other specialized) securities will use a `/` in replacement of a `.` which is sometimes used at other brokers. For example: BRK.A should be BRK/A BRK.B should be BRK/B *Note: There is a difference between the option root and the option underlying. For BRK/A options, the option root is still BRK.A while the underlying security is BRK/A.* Real-time data is pulled from a consolidated feed from all exchanges. Delayed data is constructed from the same feed but is delayed industry-standard 15 minutes. ### Realtime vs. Delayed | Type | Brokerage API | Sandbox API | | ------------ | ------------- | ------------- | | Equities | Realtime | Delayed | | Options | Realtime | Delayed | | Indices | Realtime\* | Not available | | Mutual Funds | Not Available | Not Available | | Greeks | Hourly | Not Available | \*NDX, RUT, and COMP are derived values. Derived data refers to values produced by applying mathematical models, formulas, or transformations to underlying market data. In trading, this often includes forward-looking prices, implied metrics, or theoretical values calculated from inputs like spot prices, interest rates, dividends, and volatility. Learn more about Tradier derived data.
### Greeks Greeks and volatility data have been included courtesy of the ORATS APIs. Please check out their full offering of in-depth options data at