# Price dispersion history (/api-reference/markets/price-dispersion-history)

## Price dispersion history

`GET https://data.tryopengrid.com/v1/markets/{gpu}/history/dispersion`

Dispersion of one GPU over time.

### Parameters

- `gpu` (path, required, string): GPU id, e.g. `nvidia-h100-80gb-sxm5`. Older short names (`h100-80gb-sxm5`) are accepted as aliases; responses always return the id.
- `days` (query, integer)
- `interval` (query, string)
- `OpenGrid-Version` (header, string): The API version to shape the response for. Default: the version pinned to your key.

### Response `data`

- `days` (number)
- `gpu` (string)
- `gpu_name` (string)
- `interval` (string)
- `note` (string)
- `points` (array of object)
  - `close_high` (number)
  - `close_low` (number)
  - `close_median` (number)
  - `close_providers` (number)
  - `cv_hours` (number)
  - `cv_mean` (null | number)
  - `hours_market` (number)
  - `iqr_rel_mean` (null | number)
  - `providers_max` (number)
  - `spread_pct_of_low_mean` (null | number)
  - `t` (string)

Every success is `{"data": ..., "meta": {as_of, api_version, request_id, next_cursor?}}`.

### Example

```bash
curl "https://data.tryopengrid.com/v1/markets/nvidia-h100-80gb-sxm5/history/dispersion" \
  -H "Authorization: Bearer $OPENGRID_API_KEY"
```