{
    "id": "SEC-041",
    "category": "SEC",
    "title": "產業流動性斷層",
    "question": "哪些產業的交易活躍度只集中在少數股票？",
    "chart": "scatter",
    "metric": "前五股成交額佔比（%）",
    "secondary": "低流動性成員比例（%）",
    "x": "低流動性比例（%）",
    "y": "前五股成交額佔比（%）",
    "panels": [
        "交易集中度",
        "低流動性比例",
        "成員數與門檻"
    ],
    "filters": [
        "成分股範圍",
        "產業分類",
        "加權方式"
    ],
    "apis": [
        "EOD",
        "TECH",
        "FUND",
        "FX"
    ],
    "calculation": "同產業計算拆股一致日成交額中位數分布，求前五集中度與低於閾值者佔比。",
    "caveat": "成交額是估計，行業成員少時前五天然高；需設最小樣本與市場本地門檻。；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": 7,
    "sample_labels": [
        "高度集中",
        "廣泛活躍",
        "成員較少",
        "低活躍"
    ],
    "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": 51.0,
    "requires_user_input": false,
    "requires_extra_plan": false,
    "source_urls": [
        "https://eodhd.com/financial-apis/api-for-historical-data-and-volumes",
        "https://eodhd.com/financial-apis/technical-indicators-api",
        "https://eodhd.com/financial-apis/stock-etfs-fundamental-data-feeds",
        "https://eodhd.com/financial-apis/list-supported-forex-currencies"
    ],
    "rank": 940,
    "stage": "P4",
    "svg_file": "mockups/0940-SEC-041.svg",
    "demo_fingerprint": "c5a71e12bc22c374",
    "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
        }
    }
}