Stock Volatility Fifteen Days
Calculates the historical volatility of a stock over the past 15 trading days.
Syntax
=StockVolatilityFifteenDays(symbol)Returns
number
15-day volatility as decimal
Examples
=StockVolatilityFifteenDays("AAPL")When to Use
- Short-term risk assessment
- Options pricing inputs
- Swing trading analysis
When NOT to Use
| Scenario | Use Instead |
|---|---|
| Weekly view | StockVolatilitySevenDays() |
| Monthly view | StockVolatilityThirtyDays() |
Common Issues & FAQ
Is 15-day volatility annualized?
Check return format - may be daily or annualized.
Excel Templates Using Stock Volatility Fifteen Days
These ready-made MarketXLS templates call StockVolatilityFifteenDays() in their worksheet formulas. Open one to see the function working inside a complete model.
Related Formulas
More MarketXLS MarketXLS Analytics formulas you can use in the same worksheet:
- Stock Volatility Five Years
- Stock Volatility Nine Months
- Stock Volatility One Year
- Stock Volatility Six Months
- Stock Volatility Three Months
- Stock Volatility Three Years
- Stock Volatility Two Years
- StockChart
See StockVolatilityFifteenDays used in a complete workbook: Volatile Penny Stocks: How to Identify, Screen, and Analyze Them in Excel (2026)
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