{
    "id": "ETF_EQUITY-02",
    "category": "ETF_EQUITY",
    "category_name": "股票型 ETF",
    "title": "追蹤差異與追蹤誤差",
    "question": "追蹤差異與追蹤誤差",
    "chart": "multi",
    "metric": "追蹤差異與追蹤誤差",
    "secondary": "多面板",
    "x": "觀察期／樣本",
    "y": "示例數值",
    "panels": [
        "追蹤差異與追蹤誤差",
        "多面板",
        "資料明細"
    ],
    "filters": [
        "標的／市場",
        "分析區間",
        "基準／參數"
    ],
    "apis": [
        "EOD",
        "FUND_ETF",
        "USER_MASTER"
    ],
    "calculation": "期間基金報酬−基準報酬；std(日主動報酬)×sqrt(年交易日)。",
    "caveat": "標題必須註明市價報酬口徑；沒有 NAV 時不稱官方 NAV tracking error。",
    "inputs": "EOD.adjusted_close\nUSER.可驗證的基準總報酬序列",
    "extra_inputs": "依左側必要欄位與限制核實",
    "data_class": "衍生",
    "complexity": "原生＋主檔／用戶資料",
    "rank": 2,
    "stage": "P0",
    "collection": "product",
    "source_urls": [
        "https://eodhd.com/financial-apis/api-for-historical-data-and-volumes",
        "https://eodhd.com/financial-academy/financial-faq/fundamentals-glossary-etf"
    ],
    "requires_user_input": true,
    "requires_extra_plan": false,
    "cadence": "示例資料",
    "sample_labels": [
        "2019",
        "2020",
        "2021",
        "2022",
        "2023",
        "2024"
    ],
    "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
        }
    }
}