GET /v2/performance/reporting-entities/:id

Get aggregated performance metrics for a reporting entity over a date
range. Default is one row per (date, currency) for the entity as a
whole; `expand` increases granularity.

Path params:
  id (required) — Reporting-entity identifier.

Query params:
  fromDate (required) — First date (inclusive, ISO 8601).
  toDate   (required) — Last date  (inclusive, ISO 8601).
  expand   (optional) — Comma-separated. One or more of:
                          portfolios
                          depositories
                          instruments
                          instrumentClasses
                          instrumentClassesDetailed
  include  (optional) — Comma-separated. Currently supports: instrument.

Response (200 OK):
{
  "data": [
    {
      "id": "string",
      "type": "performance",
      "attributes": {
        "date":              "ISO 8601 date",
        "ccyCode":           "string — ISO 4217",
        "dailyNetCashFlow":  "number",
        "dailyReturn":       "number",
        "dailyTwr":          "number",
        "accumulatedReturn": "number",
        "accumulatedTwr":    "number"
      },
      "relationships": {
        "reportingEntity":         { "type": "reporting-entity", "id": "string" },
        "depository":              { "type": "depository", "id": "string (when expand=depositories)" },
        "portfolio":               { "type": "portfolio", "id": "string (when expand=portfolios)" },
        "instrument":              { "type": "instrument", "id": "string (when expand=instruments)" },
        "instrumentClass":         { "type": "instrument-class", "id": "string (when expand=instrumentClasses)" },
        "instrumentClassDetailed": { "type": "instrument-class-detailed", "id": "string (when expand=instrumentClassesDetailed)" }
      }
    }
  ]
}