{
    "id": "OPT-035",
    "category": "OPT",
    "title": "價差隨期限與價內外程度",
    "question": "交易摩擦主要集中在哪類期權？",
    "chart": "heatmap",
    "metric": "相對買賣價差中位數（%）",
    "secondary": "有效合約數與成交中位數",
    "x": "DTE與K/S區間",
    "y": "相對買賣價差中位數（%）",
    "panels": [
        "主圖：相對買賣價差中位數（%），依DTE與K/S區間排列",
        "輔圖：有效合約數與成交中位數",
        "明細：價差隨期限與價內外程度的資料列、觀測日期與缺值狀態"
    ],
    "filters": [
        "美股標的與報價日",
        "到期日與行權價",
        "最低每格合約數"
    ],
    "apis": [
        "OPTIONS",
        "EOD"
    ],
    "calculation": "對有效雙邊價計相對價差，按期限與價內外格子聚合中位數。",
    "caveat": "格子內合約價格分布不同；低價格會放大相對價差。 Marketplace 額外方案；僅美股日終快照，不含逐筆買賣方向或券商庫存；先驗證合約乘數。",
    "data_class": "額外方案",
    "complexity": "高",
    "audience": "專業",
    "reach": 5,
    "frequency": 5,
    "decision": 6,
    "clarity": 8,
    "sample_labels": [
        "短期價內",
        "短期價外",
        "中期平值",
        "長期價外"
    ],
    "cadence": "美股收市後日更",
    "category_name": "美股期權",
    "score": 55.5,
    "requires_user_input": false,
    "requires_extra_plan": true,
    "source_urls": [
        "https://eodhd.com/marketplace/unicornbay/options",
        "https://eodhd.com/financial-apis/api-for-historical-data-and-volumes"
    ],
    "rank": 897,
    "stage": "P4",
    "svg_file": "mockups/0897-OPT-035.svg",
    "demo_fingerprint": "819e76dac62a7fb7",
    "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
        }
    }
}