{
    "id": "OPT-011",
    "category": "OPT",
    "title": "未平倉變化榜",
    "question": "哪些合約的未平倉增減最多？",
    "chart": "bar",
    "metric": "每日未平倉變化（張）",
    "secondary": "原OI、成交量與變化百分比",
    "x": "合約",
    "y": "每日未平倉變化（張）",
    "panels": [
        "主圖：每日未平倉變化（張），依合約排列",
        "輔圖：原OI、成交量與變化百分比",
        "明細：未平倉變化榜的資料列、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",
        "最低前日 OI"
    ],
    "apis": [
        "OPTIONS"
    ],
    "calculation": "以 open_interest_change 排序，和前日OI核對；拆分新增、下降及不可比合約。",
    "caveat": "OI增加不能識別誰買誰賣；行權或到期亦會改變OI。 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": "進階",
    "reach": 7,
    "frequency": 7,
    "decision": 7,
    "clarity": 9,
    "sample_labels": [
        "明顯增加",
        "小幅增加",
        "小幅減少",
        "明顯減少"
    ],
    "cadence": "美股收市後日更",
    "category_name": "美股期權",
    "score": 72.0,
    "requires_user_input": false,
    "requires_extra_plan": true,
    "source_urls": [
        "https://eodhd.com/marketplace/unicornbay/options"
    ],
    "rank": 548,
    "stage": "P3",
    "svg_file": "mockups/0548-OPT-011.svg",
    "demo_fingerprint": "32c797e72d71e9a3",
    "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
        }
    }
}