{
    "id": "ERN-020",
    "category": "ERN",
    "title": "業績後漂移研究",
    "question": "超預期股票之後是否持續跑贏？",
    "chart": "line",
    "metric": "事件後平均超額報酬（%）",
    "secondary": "分組樣本數與分位區間",
    "x": "公告後交易日",
    "y": "事件後平均超額報酬（%）",
    "panels": [
        "主圖：事件後平均超額報酬（%），依公告後交易日排列",
        "輔圖：分組樣本數與分位區間",
        "明細：業績後漂移研究的資料列、觀測日期與缺值狀態"
    ],
    "filters": [
        "市場／行業",
        "財政季度／公告日期",
        "驚喜分組規則"
    ],
    "apis": [
        "CALENDAR",
        "EOD"
    ],
    "calculation": "按事前定義 EPS 驚喜分位組合，對公告後第1至60日計等權超額報酬。",
    "caveat": "需控制退市與前視偏差；重疊事件樣本非獨立。 報告日與財政期末分開；缺失預估不可當零；歷史預估不等於完整當時可得資料。",
    "data_class": "衍生",
    "complexity": "高",
    "audience": "專業",
    "reach": 6,
    "frequency": 7,
    "decision": 7,
    "clarity": 7,
    "sample_labels": [
        "第1日",
        "第5日",
        "第20日",
        "第40日",
        "第60日"
    ],
    "cadence": "日更；業績公布後重新整理",
    "category_name": "業績與預期",
    "score": 66.5,
    "requires_user_input": false,
    "requires_extra_plan": false,
    "source_urls": [
        "https://eodhd.com/financial-apis/calendar-upcoming-earnings-ipos-and-splits",
        "https://eodhd.com/financial-apis/api-for-historical-data-and-volumes"
    ],
    "rank": 666,
    "stage": "P3",
    "svg_file": "mockups/0666-ERN-020.svg",
    "demo_fingerprint": "43bfb7d139362433",
    "collection": "catalogue",
    "sample_annotation": {
        "sample": true,
        "as_of": "2026-10-16",
        "notice": "Charts and tables for this report are generated, deterministic synthetic sample observations for educational layout and unit demonstration only. No provider, market data or analysis engine is called, and nothing here is a statement about real securities.",
        "notice_zh": "此報告的圖表與數據為確定性生成的合成示例數據，僅供教育及版面展示；並無連接任何資料供應商或實際分析引擎，不代表任何真實證券的表現。",
        "default_filters": {
            "symbol": "0700.HK",
            "period": "1Y",
            "benchmark": "HSI"
        },
        "filters": {
            "symbol": [
                "0700.HK",
                "0005.HK",
                "AAPL.US",
                "MSFT.US",
                "SPY.US",
                "BTC-USD.CC"
            ],
            "period": [
                "1Y",
                "3Y",
                "5Y"
            ],
            "benchmark": [
                "HSI",
                "SPX",
                "BTC"
            ]
        },
        "library": {
            "version": "2026-10-19",
            "source": "https://chatgpt.com/share/6ad67223-c610-83e8-adb2-33aaf792e584",
            "sample": true
        }
    }
}