# Volume & OI per Expiry

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

Returns the total volume and open interest per expiry for the given ticker.


## 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 |
|-------|------|-------------|
| `expires` | Stock Expiry | The expiry of an options cycle as an ISO date. |
| `oi` | Stock Open Interest | The sum of open interest for all contracts. |
| `volume` | Stock Options Volume | The sum of volume for all contracts. |


## Example

### curl

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

## Response Example

```json
{
  "data": [
    {
      "expires": "2023-09-08",
      "oi": 451630,
      "volume": 962332
    },
    {
      "expires": "2023-09-15",
      "oi": 1422982,
      "volume": 631608
    },
    {
      "expires": "2023-09-22",
      "oi": 144938,
      "volume": 111177
    },
    {
      "expires": "2023-09-29",
      "oi": 144629,
      "volume": 78604
    },
    {
      "expires": "2023-10-06",
      "oi": 38090,
      "volume": 42405
    },
    {
      "expires": "2023-10-13",
      "oi": 14371,
      "volume": 18694
    },
    {
      "expires": "2023-10-20",
      "oi": 837270,
      "volume": 244837
    },
    {
      "expires": "2023-10-27",
      "oi": 0,
      "volume": 6004
    },
    {
      "expires": "2023-11-17",
      "oi": 524204,
      "volume": 62599
    },
    {
      "expires": "2023-12-15",
      "oi": 723533,
      "volume": 72616
    },
    {
      "expires": "2024-01-19",
      "oi": 1658337,
      "volume": 98483
    },
    {
      "expires": "2024-02-16",
      "oi": 34994,
      "volume": 8947
    },
    {
      "expires": "2024-03-15",
      "oi": 304973,
      "volume": 22281
    },
    {
      "expires": "2024-04-19",
      "oi": 21399,
      "volume": 5905
    },
    {
      "expires": "2024-06-21",
      "oi": 560682,
      "volume": 23783
    },
    {
      "expires": "2024-09-20",
      "oi": 122030,
      "volume": 17994
    },
    {
      "expires": "2024-12-20",
      "oi": 63646,
      "volume": 5170
    },
    {
      "expires": "2025-01-17",
      "oi": 472809,
      "volume": 9144
    },
    {
      "expires": "2025-06-20",
      "oi": 89229,
      "volume": 3194
    },
    {
      "expires": "2025-12-19",
      "oi": 116365,
      "volume": 5856
    }
  ]
}
```