{
    "id": "SEC-045",
    "category": "SEC",
    "title": "上市與退市宇宙變化",
    "question": "研究市場的可投資公司名單最近如何改變？",
    "chart": "table",
    "metric": "新增／退出標的數（檔）",
    "secondary": "成分名單變化率（%）",
    "x": "名單變動日期",
    "y": "新增／退出標的數（檔）",
    "panels": [
        "名單變更",
        "證券識別碼映射",
        "未知生效日期"
    ],
    "filters": [
        "成分股範圍",
        "產業分類",
        "加權方式"
    ],
    "apis": [
        "EXCHANGE",
        "FUND"
    ],
    "calculation": "定期保存 EXCHANGE 活躍與delisted清單，識別新增、退市、更名與代碼映射變更。",
    "caveat": "沒有每日曆史快照不能重建精確納入日；代碼變更不當成新公司，退市原因不臆測。；市場廣度必須覆蓋選定完整成分股並列出有效分母，不能直接把 Screener 前 1,000 筆當全市場。",
    "data_class": "衍生",
    "complexity": "高",
    "audience": "專業",
    "reach": 4,
    "frequency": 5,
    "decision": 6,
    "clarity": 9,
    "sample_labels": [
        "新上市",
        "退市",
        "更名",
        "多上市映射"
    ],
    "cadence": "每交易日收市後",
    "sample_note": "僅用於合成視覺示意，並非真實行情或投資成果。",
    "category_name": "產業與市場廣度",
    "score": 53.0,
    "requires_user_input": false,
    "requires_extra_plan": false,
    "source_urls": [
        "https://eodhd.com/financial-apis/exchanges-api-list-of-tickers-and-trading-hours",
        "https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds"
    ],
    "rank": 921,
    "stage": "P4",
    "svg_file": "mockups/0921-SEC-045.svg",
    "demo_fingerprint": "5032292fef7bf7d1",
    "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
        }
    }
}