{
    "id": "VOL-039",
    "category": "VOL",
    "title": "股數稀釋與換手率偏差",
    "question": "使用過時股份數會令換手率差多少？",
    "chart": "line",
    "metric": "換手率差（百分點）",
    "secondary": "相對歷史基線（倍）",
    "x": "交易日／觀察期",
    "y": "換手率差（百分點）",
    "panels": [
        "股數稀釋與換手率偏差",
        "相對歷史基線（倍）",
        "事件明細與資料日期"
    ],
    "filters": [
        "標的／市場",
        "分析區間",
        "基準／參數"
    ],
    "apis": [
        "EOD",
        "FUND",
        "SPLIT"
    ],
    "calculation": "當前近似以同股類SharesStats.SharesOutstanding作分母。歷史有經核實當日期末股數時，將EOD.volume按累積拆股因子還原為當時股數量後再除分母；若僅有outstandingShares加權稀釋股數，統一拆股基準後只顯示加權稀釋股數口徑的近似比率。 同時對照使用當時有效股數與最新股數造成的偏差。",
    "caveat": "OHLCV不能識別主動買賣、投資者身份、逐筆籌碼或真實資金淨流入。 FUND.outstandingShares為加權稀釋股數，不能直接當精確歷史期末股數或自由流通股數；缺分母則留白。",
    "data_class": "衍生",
    "complexity": "高",
    "audience": "專業",
    "reach": 4,
    "frequency": 5,
    "decision": 5,
    "clarity": 4,
    "sample_labels": [
        "T−5",
        "T−4",
        "T−3",
        "T−2",
        "T−1",
        "T"
    ],
    "cadence": "每日／事件觸發",
    "category_name": "成交量與流動性",
    "score": 45.5,
    "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/stock-etfs-fundamental-data-feeds",
        "https://eodhd.com/financial-apis/api-splits-dividends"
    ],
    "rank": 979,
    "stage": "P4",
    "svg_file": "mockups/0979-VOL-039.svg",
    "demo_fingerprint": "4b4ae1df1e90e577",
    "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
        }
    }
}