Trade (v3)

StandardPro

GET

https://localhost:25503/v3/option/snapshot/trade

REQUIRED

The v3 Theta Terminal must be running to access data.

• Retrieve the real-time last trade of an option contract.
• You might need to change the default expiration date to a different date if it is past the current date.
• This endpoint will return no data if the market was closed for the day. Theta Data resets the snapshot cache at midnight ET every night.

Sample URL

Paste the URL below into your browser while the Theta Terminal is running.

Returns last trade for an option contract

http://localhost:25503/v3/option/snapshot/trade?symbol=AAPL&expiration=20260116&right=call&strike=275.000

Returns last trade for all option contracts

http://localhost:25503/v3/option/snapshot/trade?symbol=AAPL&expiration=*

Query Parameters

symbolRequired  -

The stock or index symbol, or underlying symbol for options.

Type: string

expirationRequired  -

The expiration of the contract in YYYY-MM-DD or YYYYMMDD format.

Type: string

strike  -

The strike price of the contract in dollars (ie 100.00 for $100.00), or * for all strikes.

Type: string (Default: *)

right  -

The right (call or put) of the contract.

Type: string (Default: both)

Enumcall, put, both

format  -

The format of the data when returned to the user.

Type: string (Default: csv)

Enumcsv, json, ndjson

Sample Code

Python