| Name | Type | Description |
|---|---|---|
| messages | Array<String> | A list of messages related to the request, such as warnings or errors. |
| etf | ETFSummary | A brief summary of the ETF it which these stats refer. Not included when returning historical stats. |
| stats | Array<ETFStats> | The historical stats for the ETF |
| next_page | String | The token required to request the next page of the data. If null, no further results are available. |