{
  "schemaVersion": "1.0",
  "campaignId": "human-clause-campaign-2-convergence",
  "world": "investgame",
  "status": "retrospective-descriptive-snapshot",
  "asOfCohortStart": "2026-09-28",
  "hypothesis": "More choice does not necessarily create more diversity of machine decisions.",
  "interpretationBoundary": "descriptive-temporal-selection-concentration-only",
  "source": {
    "fundId": "chatgpt-fund",
    "selectionMode": "memory-free-advisory",
    "authoritativeScheduleBlobSha": "3e29cad1aca2b0fdb4ea2612bd06317d34313fb8"
  },
  "sample": {
    "cohorts": 9,
    "portfolioSize": 11,
    "selectionSlots": 99,
    "distinctSelectedTickers": 20,
    "currentEligibleUniverseSize": 174,
    "historicalUniverseBindingComplete": false
  },
  "selectionFrequency": [
    {"ticker": "MSFT", "cohortsSelected": 9},
    {"ticker": "NVDA", "cohortsSelected": 9},
    {"ticker": "AMZN", "cohortsSelected": 8},
    {"ticker": "GOOGL", "cohortsSelected": 8},
    {"ticker": "META", "cohortsSelected": 8},
    {"ticker": "JPM", "cohortsSelected": 8},
    {"ticker": "AVGO", "cohortsSelected": 8},
    {"ticker": "LLY", "cohortsSelected": 7},
    {"ticker": "XOM", "cohortsSelected": 6},
    {"ticker": "AAPL", "cohortsSelected": 5},
    {"ticker": "V", "cohortsSelected": 5},
    {"ticker": "BRK-B", "cohortsSelected": 4},
    {"ticker": "WMT", "cohortsSelected": 3},
    {"ticker": "KO", "cohortsSelected": 2},
    {"ticker": "COST", "cohortsSelected": 2},
    {"ticker": "UNH", "cohortsSelected": 2},
    {"ticker": "JNJ", "cohortsSelected": 2},
    {"ticker": "GE", "cohortsSelected": 1},
    {"ticker": "MA", "cohortsSelected": 1},
    {"ticker": "CVX", "cohortsSelected": 1}
  ],
  "consecutiveCohortMetrics": {
    "nameOverlapOf11": [8, 7, 7, 8, 8, 9, 8, 9],
    "meanNameOverlap": 8.0,
    "meanJaccard": 0.5754578755,
    "meanWeightedOverlap": 0.67125
  },
  "concentration": {
    "top8Tickers": ["MSFT", "NVDA", "AMZN", "GOOGL", "META", "JPM", "AVGO", "LLY"],
    "top8SelectionSlots": 65,
    "top8SelectionSlotShare": 0.6565656566,
    "top8MeanPortfolioWeight": 0.7122222222,
    "selectionSlotShannonEffectiveCount": 16.4673630965,
    "selectionSlotHhiEffectiveCount": 14.8275340393
  },
  "researchBoundary": {
    "claim": "The nine frozen ChatGPT Fund cohorts show strong temporal selection concentration around a persistent core.",
    "notClaims": [
      "The snapshot does not prove algorithmic monoculture.",
      "The snapshot does not establish that recurrent names are suboptimal.",
      "The snapshot does not isolate training-data, popularity, market-cap, prompt or model-family effects.",
      "Historical cohort-specific eligible universes must be hash-bound before inferential null comparisons are promoted."
    ]
  },
  "prospectiveNextStep": {
    "officialFundUnchanged": true,
    "canonicalReplicatesPerFutureSnapshot": 20,
    "requiredControls": [
      "uniform-without-replacement",
      "sector-matched",
      "market-cap-and-salience-conditioned",
      "transparent-systematic-baseline"
    ],
    "futureWorld": "paymentgame"
  }
}