{
    "id": "ETF-031",
    "category": "ETF",
    "title": "ETF 成立年資與歷史覆蓋",
    "question": "哪些基金有足夠長且完整的可比較價格歷史？",
    "chart": "range",
    "metric": "可用歷史長度（年）",
    "secondary": "缺價格交易日（天）",
    "x": "ETF",
    "y": "可用歷史長度（年）",
    "panels": [
        "歷史覆蓋區間",
        "成立與首筆日期",
        "缺漏分類"
    ],
    "filters": [
        "基金類型",
        "比較基準",
        "顯示幣別"
    ],
    "apis": [
        "FUND",
        "EOD",
        "EXCHANGE"
    ],
    "calculation": "比較 Inception_Date、最早 EOD 日期與選定共同交易日，繪資料可用區間。",
    "caveat": "成立日期不等於可得數據起日；休市及合法停牌不可直接計為資料缺失。",
    "data_class": "衍生",
    "complexity": "低",
    "audience": "進階",
    "reach": 7,
    "frequency": 5,
    "decision": 7,
    "clarity": 9,
    "sample_labels": [
        "基金甲",
        "基金乙",
        "基金丙",
        "基金丁"
    ],
    "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": "ETF與基金",
    "score": 66.0,
    "requires_user_input": false,
    "requires_extra_plan": false,
    "source_urls": [
        "https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds",
        "https://eodhd.com/financial-apis/api-for-historical-data-and-volumes",
        "https://eodhd.com/financial-apis/exchanges-api-list-of-tickers-and-trading-hours"
    ],
    "rank": 681,
    "stage": "P3",
    "svg_file": "mockups/0681-ETF-031.svg",
    "demo_fingerprint": "baf1ef7e6518fd85",
    "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
        }
    }
}