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  "caveats": [
    "日股市值使用Yahoo历史股数侧表，覆盖不完整且未证明历史修订安全，只作探索性比较。",
    "共同日期只统一观察时间，不会消除各来源证券范围、估值和状态记录的差异。",
    "本结果是可复算的回顾性流动性描述，不是策略容量、真实成交或历史PIT证明。",
    "A股仅含沪深，排除北交所和已确认的前身代码；本地日线始于2015年，跨市场比较从2020年起。"
  ]
}
