# Optionable Tickers

`GET` `https://api.unusualwhales.com/api/option-trades/optionable-tickers`

Returns the current universe of underlying symbols that have listed options (sourced from the Nasdaq
option-root locators), sorted alphabetically. Query this daily to track new listings and delistings.

Pass `?ticker=SYMBOL` to check a single company instead — the response then reports whether that
symbol currently has listed options.

NOTICE: Access to this endpoint is only included in the Advanced API subscription.


## Authentication

```
Authorization: Bearer YOUR_API_KEY
```

## Query Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| `ticker` | Ticker | No | Optional: check a single symbol instead of listing the whole universe. |



## Example

### curl

```bash
curl -X GET "https://api.unusualwhales.com/api/option-trades/optionable-tickers" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json"
```

### Python

```python
import http.client

conn = http.client.HTTPSConnection("api.unusualwhales.com")
headers = {"Authorization": "Bearer YOUR_API_KEY", "Accept": "application/json"}
conn.request("GET", "/api/option-trades/optionable-tickers", headers=headers)
response = conn.getresponse()
print(response.read().decode("utf-8"))
```

## Response Example

```json
{
  "data": [
    "A",
    "AA",
    "AAA",
    "AAAU",
    "AACB",
    "AACG",
    "AACT",
    "AADI",
    "AAL",
    "AAOI"
  ]
}
```