{
  "calculated_at_utc": "2026-10-15T14:00:45.633310Z",
  "environment": "Cumulus9 demo",
  "endpoint": "https://demo.api.cumulus9.com/portfolios",
  "parameter_date": "2026-10-14",
  "cycle": "C",
  "parameter_archive": "cme.span2.20261014.c.zip",
  "model": "SPAN_2",
  "currency": "USD",
  "account_treatment": "HEDGE (H)",
  "origin": "HOUSE (default)",
  "synthetic": true,
  "response_is_excerpt": true,
  "initial_margin": 44731.9,
  "rounding_note": "Displayed components sum to 44731.89. The returned total is 44731.90; retain the one-cent rounding difference."
}