# Interpolated IV

`GET` `https://api.unusualwhales.com/api/stock/{ticker}/interpolated-iv`

Returns the Interpolated IV for a given trading day. If there is no expiration then the data is calcualted via linear interpolation
with the next 2 closest expirations

Date must be the current or a past date. If no date is given, returns data for the current/last market day.


## Authentication

```
Authorization: Bearer YOUR_API_KEY
```

## Path Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| `ticker` | SingleTicker | Yes | A single ticker |

## Query Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| `date` | Optional Market Date | No | A trading date in the format of YYYY-MM-DD.
This is optional and by default the last trading date.
 |


## Response (200)

| Field | Type | Description |
|-------|------|-------------|
| `date` | Market General Trading day | A trading date in ISO format.
 |
| `days` | integer | Number of days to expiration |
| `implied_move_perc` | string | Expected move as a percentage of the current price |
| `percentile` | string | Percentile ranking of this volatility value over a 1y period |
| `volatility` | string | Interpolated implied volatility value |


## Example

### curl

```bash
curl -X GET "https://api.unusualwhales.com/api/stock/{ticker}/interpolated-iv" \
  -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/stock/{ticker}/interpolated-iv", headers=headers)
response = conn.getresponse()
print(response.read().decode("utf-8"))
```

## Response Example

```json
{
  "data": [
    {
      "date": "2025-05-30",
      "days": 1,
      "implied_move_perc": "0.003",
      "percentile": "100",
      "volatility": "1.739"
    },
    {
      "date": "2025-05-30",
      "days": 5,
      "implied_move_perc": "0.02",
      "percentile": "94.737",
      "volatility": "0.696"
    },
    {
      "date": "2025-05-30",
      "days": 7,
      "implied_move_perc": "0.026",
      "percentile": "52.632",
      "volatility": "0.278"
    },
    {
      "date": "2025-05-30",
      "days": 14,
      "implied_move_perc": "0.041",
      "percentile": "68.421",
      "volatility": "0.311"
    },
    {
      "date": "2025-05-30",
      "days": 30,
      "implied_move_perc": "0.058",
      "percentile": "77.193",
      "volatility": "0.299"
    }
  ]
}
```