{
    "id": "OPT-036",
    "category": "OPT",
    "title": "最後成交價偏離中價",
    "question": "使用最後成交估值可能誤差多大？",
    "chart": "scatter",
    "metric": "last－midpoint（USD／股）",
    "secondary": "成交時間與相對價差",
    "x": "距最後成交時間",
    "y": "last－midpoint（USD／股）",
    "panels": [
        "主圖：last－midpoint（USD／股），依距最後成交時間排列",
        "輔圖：成交時間與相對價差",
        "明細：最後成交價偏離中價的資料列、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",
        "可用成交時間"
    ],
    "apis": [
        "OPTIONS"
    ],
    "calculation": "在bid/ask有效時比較 last 與 midpoint，標記 last 位於當前價差以外。",
    "caveat": "不是成交執行品質判斷；last與bid/ask時間可能不同。 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": "中",
    "audience": "專業",
    "reach": 4,
    "frequency": 5,
    "decision": 6,
    "clarity": 8,
    "sample_labels": [
        "中價附近",
        "高於賣價",
        "低於買價",
        "成交已陳舊"
    ],
    "cadence": "美股收市後日更",
    "category_name": "美股期權",
    "score": 52.0,
    "requires_user_input": false,
    "requires_extra_plan": true,
    "source_urls": [
        "https://eodhd.com/marketplace/unicornbay/options"
    ],
    "rank": 928,
    "stage": "P4",
    "svg_file": "mockups/0928-OPT-036.svg",
    "demo_fingerprint": "f92f3b99f0a8ea10",
    "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
        }
    }
}