{
    "id": "ERN-021",
    "category": "ERN",
    "title": "公布前炒作與公布後回吐",
    "question": "業績前升得多的公司容易回吐嗎？",
    "chart": "scatter",
    "metric": "公告後首日報酬（%）",
    "secondary": "EPS 驚喜與樣本數",
    "x": "公告前20日超額報酬（%）",
    "y": "公告後首日報酬（%）",
    "panels": [
        "主圖：公告後首日報酬（%），依公告前20日超額報酬（%）排列",
        "輔圖：EPS 驚喜與樣本數",
        "明細：公布前炒作與公布後回吐的資料列、觀測日期與缺值狀態"
    ],
    "filters": [
        "市場／行業",
        "財政季度／公告日期",
        "基準及事件樣本"
    ],
    "apis": [
        "CALENDAR",
        "EOD"
    ],
    "calculation": "以反應日前一日為界計前20日相對基準漲幅，對應第一反應日報酬。",
    "caveat": "相關性不代表可交易獲利；避免前後窗口重疊。 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": "進階",
    "reach": 7,
    "frequency": 7,
    "decision": 7,
    "clarity": 8,
    "sample_labels": [
        "低預熱高反應",
        "高預熱高反應",
        "低預熱回吐",
        "高預熱回吐"
    ],
    "cadence": "日更；業績公布後重新整理",
    "category_name": "業績與預期",
    "score": 71.0,
    "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": 557,
    "stage": "P3",
    "svg_file": "mockups/0557-ERN-021.svg",
    "demo_fingerprint": "2a448ee5b40b2eb2",
    "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
        }
    }
}