{
    "id": "OPT-015",
    "category": "OPT",
    "title": "風險逆轉偏斜歷史",
    "question": "市場對上行與下行的相對定價如何改變？",
    "chart": "line",
    "metric": "25Delta Call IV－Put IV（百分點）",
    "secondary": "同期股價報酬與期限",
    "x": "日期",
    "y": "25Delta Call IV－Put IV（百分點）",
    "panels": [
        "主圖：25Delta Call IV－Put IV（百分點），依日期排列",
        "輔圖：同期股價報酬與期限",
        "明細：風險逆轉偏斜歷史的資料列、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",
        "固定等效期限"
    ],
    "apis": [
        "OPTIONS",
        "EOD"
    ],
    "calculation": "以固定30日等效期限抽取25Delta兩翼IV差，逐日使用相同插值和過濾規則。",
    "caveat": "合約滾動與稀疏履約價會產生跳動；不代表成交的逆轉策略。 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": 7,
    "sample_labels": [
        "偏向下行保護",
        "中性附近",
        "偏向上行",
        "資料稀疏"
    ],
    "cadence": "美股收市後日更",
    "category_name": "美股期權",
    "score": 54.5,
    "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": 901,
    "stage": "P4",
    "svg_file": "mockups/0901-OPT-015.svg",
    "demo_fingerprint": "235d503ccb25b711",
    "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
        }
    }
}