{
    "id": "SEC-016",
    "category": "SEC",
    "title": "市場巨企集中度",
    "question": "整個市場有多少市值集中在前幾間公司？",
    "chart": "stacked",
    "metric": "前幾大公司市值佔比（%）",
    "secondary": "市值 HHI（0–10,000）",
    "x": "集中度層級",
    "y": "前幾大公司市值佔比（%）",
    "panels": [
        "市值集中度",
        "前十大公司",
        "證券去重及缺值"
    ],
    "filters": [
        "成分股範圍",
        "產業分類",
        "加權方式"
    ],
    "apis": [
        "FUND",
        "EXCHANGE",
        "FX"
    ],
    "calculation": "對完整當前可比上市股票市值去重，計前1、5、10權重及Σwi²×10000。",
    "caveat": "ADR及多上市不能把同公司重復計入；流通市值與總市值必須區分。；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": "中",
    "audience": "進階",
    "reach": 8,
    "frequency": 8,
    "decision": 10,
    "clarity": 9,
    "sample_labels": [
        "最大公司",
        "其餘前五",
        "第六至十",
        "其餘市場"
    ],
    "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": 86.0,
    "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/exchanges-api-list-of-tickers-and-trading-hours",
        "https://eodhd.com/financial-apis/list-supported-forex-currencies"
    ],
    "rank": 190,
    "stage": "P1",
    "svg_file": "mockups/0190-SEC-016.svg",
    "demo_fingerprint": "61ffc26d48e38487",
    "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
        }
    }
}