ThetaData

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OHLC ​

ValueStandardPro

REQUIRED

The Theta Terminal must be running to access data.

Behavior

Retrieve a real-time last ohlc of an option contract for the trading day. You might need to change the default expiration date to a different date if it is past the current date.

Sample URL & Code

Paste the URL below into your browser while the Theta Terminal is running.
You can use the "request sample" box to the right of this box obtain sample
code in any programming language.

http://127.0.0.1:25510/v2/snapshot/option/ohlc?root=AAPL&exp=20260116&right=C&strike=275000

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.

Parameters ​

Query Parameters

rootRequired  -

The symbol of the security. Option underlyings for indices might have special tickers.

Type: string (Default: SPX)
expRequired  -

The expiration date of the option contract formatted as YYYYMMDD.

Type: integer (Default: 20231103)
rightRequired  -

The right of the option. 'C' for call; 'P' for put.

Type: string (Default: C)
EnumC, P
strikeRequired  -

The strike price in 1/10th of a cent. A $170.00 strike price would be 170000.

Type: integer (Default: 170000)
use_csvRequired  -

Uses CSV if true, legacy JSON if false.

Type: boolean (Default: false)

Responses ​

OK
JSON
{
"header": {
"id": 0,
"latency_ms": 0,
"error_type": "string",
"error_msg": "string",
"next_page": null,
"format": [
"ms_of_day",
"open",
"high",
"low",
"close",
"volume",
"count",
"date"
]
},
"response": [
[
57381579,
14.25,
14.25,
13.9,
14.15,
2090,
54,
20250103
]
]
}

Sample Code

py