| Name | Type | Description |
|---|---|---|
| nav_flows | list[ETFNavFlow] | Array of historical NAV flows data objects |
| etf | ETFSummary | A brief summary of the ETF to which these nav flows refer |
| next_page | str | The token required to request the next page of results |
| messages | list[str] | Any messages, warnings, or additional information about the data |