{
  "generated_at_utc": "2026-03-13T03:33:31.826353+00:00",
  "dataset": {
    "symbols": [
      "QQQ",
      "SPY",
      "TSLA"
    ],
    "date_start": "2025-10-28",
    "date_end": "2026-03-09",
    "n_dates": 90,
    "n_rows": 270,
    "is_dates": 54,
    "oos_dates": 36,
    "is_rows": 162,
    "oos_rows": 108,
    "baseline_candidates": {
      "odd50": "odd<50",
      "best_existing": "odd<200_sub"
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  "pass_rule": "PASS iff candidate beats baseline on OOS buy_share_mae AND at least one of {buy_mae lower, sell_mae lower, buy_pearson higher, sell_pearson higher}.",
  "baseline_model": "v1_baseline_repro",
  "winner": "ensemble_rolling_oos",
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        "sell_pearson": 0.6943407175184126,
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        "buy_share_pearson": 0.6363988774710886,
        "buy_share_spearman": 0.5284978992634367,
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        "activity_rmse": 0.013307728554040506,
        "activity_pearson": 0.9861837354365363,
        "activity_spearman": 0.9871344880680702
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      "stability": {
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            "symbol": "QQQ",
            "n": 36.0,
            "buy_share_mae": 0.14469834384615543,
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}