{
  "version": "synthetic-equity-dossier-v1",
  "synthetic": true,
  "label": "Educational synthetic equity dossier - not a market backtest",
  "created": "2026-10-16",
  "policy_frozen": "2023-12-20T00:00:00Z",
  "license": "CC0-1.0 (original synthetic fixture only)",
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    {"id":"SYN-02","name":"Synthetic Security 02","sector":"Technology","universe_available":"2023-12-15T00:00:00Z"},
    {"id":"SYN-03","name":"Synthetic Security 03","sector":"Healthcare","universe_available":"2023-12-15T00:00:00Z"},
    {"id":"SYN-04","name":"Synthetic Security 04","sector":"Healthcare","universe_available":"2023-12-15T00:00:00Z"},
    {"id":"SYN-05","name":"Synthetic Security 05","sector":"Infrastructure","universe_available":"2023-12-15T00:00:00Z"},
    {"id":"SYN-06","name":"Synthetic Security 06","sector":"Infrastructure","universe_available":"2023-12-15T00:00:00Z"}
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  "initial_weights": {"SYN-01":0.2,"SYN-02":0.2,"SYN-03":0.2,"SYN-04":0.2,"SYN-05":0.1,"SYN-06":0,"CASH":0.1},
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      "id":"2024-01","split":"development","formation":"2024-01-01T00:00:00Z","return_start":"2024-01-01T00:00:00Z","return_end":"2024-02-01T00:00:00Z","cash_return":0,
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    },
    {
      "id":"2024-02","split":"validation","formation":"2024-02-01T00:00:00Z","return_start":"2024-02-01T00:00:00Z","return_end":"2024-03-01T00:00:00Z","cash_return":0,
      "rows":[
        {"id":"SYN-01","signal_available":"2024-01-31T18:00:00Z","factor_score":50,"price_return":-0.05,"total_return":-0.05},
        {"id":"SYN-02","signal_available":"2024-01-31T18:00:00Z","factor_score":95,"price_return":-0.03,"total_return":-0.02},
        {"id":"SYN-03","signal_available":"2024-01-31T18:00:00Z","factor_score":40,"price_return":0.03,"total_return":0.03},
        {"id":"SYN-04","signal_available":"2024-01-31T18:00:00Z","factor_score":90,"price_return":0.05,"total_return":0.06},
        {"id":"SYN-05","signal_available":"2024-01-31T18:00:00Z","factor_score":80,"price_return":0.01,"total_return":0.02},
        {"id":"SYN-06","signal_available":"2024-01-31T18:00:00Z","factor_score":30,"price_return":0.01,"total_return":0.01}
      ]
    },
    {
      "id":"2024-03","split":"holdout","formation":"2024-03-01T00:00:00Z","return_start":"2024-03-01T00:00:00Z","return_end":"2024-04-01T00:00:00Z","cash_return":0,
      "rows":[
        {"id":"SYN-01","signal_available":"2024-02-29T18:00:00Z","factor_score":96,"price_return":-0.03,"total_return":-0.03},
        {"id":"SYN-02","signal_available":"2024-02-29T18:00:00Z","factor_score":45,"price_return":0.01,"total_return":0.01},
        {"id":"SYN-03","signal_available":"2024-02-29T18:00:00Z","factor_score":60,"price_return":-0.06,"total_return":-0.06},
        {"id":"SYN-04","signal_available":"2024-02-29T18:00:00Z","factor_score":90,"price_return":0.01,"total_return":0.02},
        {"id":"SYN-05","signal_available":"2024-02-29T18:00:00Z","factor_score":70,"price_return":0.03,"total_return":0.04},
        {"id":"SYN-06","signal_available":"2024-02-29T18:00:00Z","factor_score":80,"price_return":0.04,"total_return":0.04}
      ]
    }
  ],
  "sources":[
    {"title":"Kenneth French: 25 portfolios formed on size and book-to-market","url":"https://mba.tuck.dartmouth.edu/pages/faculty/ken.french/Data_Library/tw_5_ports.html","accessed":"2026-10-16","scope":"Formation rules and lagged accounting data; no factor data copied."},
    {"title":"S&P Dow Jones Indices: Index Mathematics (September 2026)","url":"https://www.spglobal.com/spdji/en/documents/methodologies/methodology-index-math.pdf","accessed":"2026-10-16","scope":"Total returns, corporate actions and index turnover; no index replicated."},
    {"title":"AQR: Transactions Costs - Practical Application","url":"https://www.aqr.com/insights/research/white-papers/transactions-costs-practical-application","accessed":"2026-10-16","scope":"Cost analysis limitations; the flat rate here is not an empirical estimate."}
  ]
}