# OI per Expiry

`GET` `https://api.unusualwhales.com/api/stock/{ticker}/oi-per-expiry`

Returns the total open interest for calls and puts for a specific expiry date.


## 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 |
|-------|------|-------------|
| `call_oi` | Total Call Open interest | The total call open interest. |
| `date` | Market General Trading day | A trading date in ISO format.
 |
| `expiry` | Option Contract Expiry | The contract expiry date in ISO format. |
| `put_oi` | Total Put Open interest | The total put open interest. |


## Example

### curl

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

## Response Example

```json
{
  "data": [
    {
      "call_oi": 1123,
      "date": "2024-12-02",
      "expiry": "2024-12-06",
      "put_oi": 24443
    }
  ]
}
```