Get historical liquidity data
| Name | Required | Default | Description |
|---|---|---|---|
symbol | No | - | Filter by asset (e.g., TSLA) |
startDate | No | - | Start date (YYYY-MM-DD) |
endDate | No | - | End date (YYYY-MM-DD) |
limit | No | 1000 | Max records (clamped to 5000) |
symbol, returns all assets. limit must be an integer >= 1.