{
  "cohorts": [
    {
      "id": "core-macro",
      "type": "core_recurring",
      "title": "Core Macro (monthly)",
      "created_at": "2026-09-03T12:00:00Z",
      "cadence": "monthly",
      "selection_rule": "Fixed universe of five macro variables, forecast at every monthly cadence date with mandatory coverage. Each instance is published on the first UTC business day of the month at 12:00 UTC and forecasts the next month-end value. All five are always included; the set is never filtered by current confidence. This is the principal evidence of forecasting skill.",
      "weighting": "equal",
      "universe": [
        "Brent crude (front-month settlement)",
        "US 10-year Treasury yield (constant maturity)",
        "EUR/USD",
        "Gold (LBMA PM auction)",
        "Federal Reserve policy rate (target range)"
      ],
      "first_instance_id": "2026-10-core-macro",
      "first_instance_cutoff": "2026-10-01T12:00:00Z",
      "members": []
    }
  ]
}