longbridge-options-volatility

longbridge-options-volatility

Prompt-only analysis skill. Compares implied volatility (IV) against historical volatility (HV), computes IV percentile rank, and surfaces the volatility smile / skew for options strategy guidance.

Response language: match the user's input language — Simplified Chinese / Traditional Chinese / English.

When to use

• "TSLA 期权 IV 现在贵不贵" / "TSLA 期權 IV 現在貴不貴" / "Is TSLA IV elevated?"
• "NVDA 波动率微笑怎么样" / "NVDA vol smile"
• "这个期权 IV 在历史什么分位" / "IV percentile for this contract"
• "现在适合买期权还是卖期权" / "Should I be long or short vol?"

For option quotes or chain discovery route to longbridge-derivatives. For P&L and Greeks payoff route to longbridge-options-pnl.

CLI

Run longbridge <subcommand> --help to verify exact flags. Primary calls (may be run concurrently):

# 1. Option chain — get IV across strikes for a specific expiry
longbridge option chain <SYMBOL> --date <YYYY-MM-DD> --format json

# 2. Option volume — call/put volume for sentiment context
longbridge option volume <SYMBOL> --format json

# 3. Daily kline — compute historical volatility (60-day window typical)
longbridge kline <SYMBOL> --period day --count 60 --format json

# If unsure of exact flags:
longbridge option --help
longbridge kline --help

Workflow

1. Resolve symbol to <CODE>.<MARKET> format (e.g. TSLA.US, 700.HK).
2. Fetch option chain for the nearest liquid expiry to get IV by strike.
3. Fetch daily kline (60 bars) and compute HV:
4. Daily log returns: r_i = ln(close_i / close_{i-1})
5. HV (annualised): σ_HV = std(r) × √252
6. Compute IV percentile using the ATM IV from the chain. Compare against the 60-day kline range as a rough proxy if historical IV series is unavailable.
7. Build smile / skew:
8. Sort chain rows by strike; extract call IV and put IV at each strike.
9. Put skew = (OTM put IV − ATM IV); if put skew > 0 the market fears downside.
10. Output structured report (template below). Cite Longbridge Securities.

Output template

{Symbol} volatility snapshot — Source: Longbridge Securities

[IV vs HV]
- ATM IV (nearest expiry): X%
- 60-day HV: X%
- IV/HV ratio: X  → {rich / fair / cheap}

[IV Percentile (60-day proxy)]
- Estimated percentile: ~N-th  (low <30 / mid 30–70 / high >70)

[Vol Smile / Skew]
- Put skew (OTM put IV − ATM IV): +X pp  → {downside fear / balanced}
- Call skew (OTM call IV − ATM IV): +X pp
- Shape: {positive skew / flat / negative skew}

[Strategy signal]
- IV rich (>70th pct) → consider premium-selling strategies (covered call, short strangle)
- IV cheap (<30th pct) → consider premium-buying strategies (long straddle, long call/put)
- Skew elevated → put spreads may offer better risk/reward than naked puts

⚠️ 以上分析仅供参考，不构成投资建议。/ 以上分析僅供參考，不構成投資建議。/ For reference only. Not investment advice.

Error handling

| Situation | 简体回复 | 繁體回復 | English reply | |---|---|---|---| | command not found: longbridge | 切换到 MCP；若 MCP 也不可用，请安装 longbridge-terminal | 切換至 MCP；若 MCP 也不可用，請安裝 longbridge-terminal | Fall back to MCP; if unavailable, install longbridge-terminal | | stderr not logged in | 请执行 longbridge auth login | 請執行 longbridge auth login | Run longbridge auth login | | Chain returns < 5 strikes | 流动性不足，无法可靠建构波动率微笑 | 流動性不足，無法可靠建構波動率微笑 | Insufficient liquidity to build vol smile reliably | | Kline < 20 bars | 价格历史不足，跳过 HV 计算 | 價格歷史不足，跳過 HV 計算 | Insufficient price history; skipping HV calculation |

MCP fallback

When the CLI is unavailable, fall back to the MCP server. Discover available tools from the MCP server's tool list at runtime — do not rely on hardcoded tool names.

Related skills

• Option quotes / chain discovery → longbridge-derivatives
• P&L diagram and Greeks → longbridge-options-pnl
• Strategy selection → longbridge-options-strategy
• Advanced vol strategies → longbridge-options-advanced
• Underlying price → longbridge-quote

File layout

longbridge-options-volatility/
└── SKILL.md          # prompt-only, no scripts/