Implied Volatility (10 Day)
Returns the 10-day implied volatility, which represents the market's expectation of price movement over the next 10 trading days (approximately 2 weeks).
What is 10-Day IV?
10-day IV is calculated from options expiring in approximately 10 days. It's most relevant for:
- Weekly options trading
- Short-term event trades
- Earnings plays (when close to announcement)
Return Value
Returns a decimal value representing annualized volatility:
- 0.20 = 20% annualized IV
- 0.50 = 50% annualized IV
Expected Move Calculation
To estimate the expected move over 10 days:
Expected Move = Stock Price * IV * SQRT(10/252)Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
| Symbol | string | Yes | Stock ticker symbol |
| StartDate | date | No | Historical date (defaults to current) |
Syntax
=ImpliedVolatility10d(Symbol, [StartDate])Examples
=ImpliedVolatility10d("AAPL")=ImpliedVolatility10d("TSLA")=ImpliedVolatility10d("SPY")=ImpliedVolatility10d("AAPL",DATE(2024,1,15))=ImpliedVolatility10d(A1)=ImpliedVolatility10d("AAPL")*100When to Use
- Weekly options trading
- Short-term directional trades
- Earnings trade setup (when imminent)
- Very short-term volatility analysis
When NOT to Use
Common Issues & FAQ
Why is 10-day IV different from 30-day IV?
Different timeframes capture different market expectations:
- 10-day IV is more sensitive to near-term events (like imminent earnings)
- 30-day IV is the standard benchmark for options analysis
How do I convert to percentage?
Multiply by 100: =ImpliedVolatility10d("AAPL")*100
How do I calculate expected move?
For a 10-day move: =Last("AAPL")*ImpliedVolatility10d("AAPL")*SQRT(10/252)
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