{
    "id": "index_benchmark-03",
    "category": "index_benchmark",
    "category_name": "指數與比較基準",
    "title": "指數成員與當前權重集中度",
    "question": "指數成員與當前權重集中度",
    "chart": "histogram",
    "metric": "指數成員與當前權重集中度",
    "secondary": "成員條形圖＋集中度及產業分布",
    "x": "觀察期／樣本",
    "y": "示例數值",
    "panels": [
        "指數成員與當前權重集中度",
        "成員條形圖＋集中度及產業分布",
        "資料明細"
    ],
    "filters": [
        "標的／市場",
        "分析區間",
        "基準／參數"
    ],
    "apis": [
        "FUND_STOCK",
        "INDEX_MEMBERS",
        "CBOE"
    ],
    "calculation": "Top10=Σ最大的 10 個 w；HHI=Σw²；有效成員数=1/HHI；按產業彙總當前權重。",
    "caveat": "一般 INDX Weight 為小數權重；CBOE index_weighting 是百分比；缺權重顯示覆蓋率，不能把未知當零。",
    "inputs": "FUND: Components、Weight、Sector",
    "extra_inputs": "依左側必要欄位與限制核實",
    "data_class": "原生資料可衍生",
    "complexity": "原生／衍生，逐標的驗證",
    "rank": 3,
    "stage": "P0",
    "collection": "product",
    "source_urls": [
        "https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds",
        "https://eodhd.com/financial-apis/cboe-europe-indices-api-beta"
    ],
    "requires_user_input": false,
    "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
        }
    }
}