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  "assumptions": [
    "Saved events belong to declared extraction days; keys show candidate presence only.",
    "Daily positive-amount records are an observed trading comparison, not an eligibility master.",
    "Fixed 09:30\u201309:35 window; arrival delay at most 60 seconds; last quote freshness at most 60 seconds.",
    "Common securities condition on survival; no market-wide temporal trend is identified.",
    "Three share quantities, no fees, lots, own impact, passive queue or participation limit; independent snapshot refresh."
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  "review_status": "reviewed_aggregate",
  "publication_permission": {
    "confirmed_by_owner": true,
    "confirmed_on": "2026-10-12",
    "scope": "aggregate_derived_statistics"
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    "fill_events_recomputed": 20867,
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    "date_and_freshness_checked": true,
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}