ExEarningsImpliedVolatility1y: Calculate 1-Year Implied Volatility Post-Earnings

The ExEarningsImpliedVolatility1y function retrieves the one-year implied volatility value for a specified stock symbol after its earnings, optionally filtered by a specific start date. This function helps traders and analysts understand implied volatility movements following corporate earnings events, aiding in strategies such as options trading, volatility analysis, and portfolio risk management.

Why Use This Function?

• Gain quick access to 1-year implied volatility data post-earnings for any valid stock symbol.
• Make informed decisions when placing options trades around earnings announcements.
• Filter by optional start date to see historical or specific-date implied volatility data.
• Integrate seamlessly with your Excel workflows and formulas for further calculations and analysis.

How to Use in Excel

=ExEarningsImpliedVolatility1y(Symbol, [StartDate])

1. In a cell, type "=ExEarningsImpliedVolatility1y("
2. Provide the stock Symbol (e.g., "AAPL").
3. Optionally, include a StartDate (e.g., "2023-05-01"). If left out or if the year is before 1978, the function fetches the most recent data.
4. Press Enter to get the implied volatility data.

If the function cannot find relevant data, it returns "NA". If the data is still refreshing on the server, it may temporarily return "Refreshing."

Parameters Explained

Example Usage

Basic Examples

1. Retrieve the most recent 1-year post-earnings implied volatility for Apple:
   • =ExEarningsImpliedVolatility1y("AAPL")
   This returns the latest available one-year implied volatility after Apple’s earnings.

2. Retrieve Tesla’s implied volatility for a specific date:
   • =ExEarningsImpliedVolatility1y("TSLA","01/15/2023")
   This fetches the 1-year post-earnings volatility value as of January 15, 2023 (if available).

Advanced Scenarios

• Combine with other Excel formulas to estimate future option premiums:
  • =ExEarningsImpliedVolatility1y("GOOGL","2022-11-01") * [Option Pricing Cell]
  Use the returned volatility in your custom option pricing models.

• Automate daily updates for a watchlist:
  • In multiple rows, reference various symbols (e.g., "JPM", "AMZN", "FB").
  • Use Excel’s fill-down feature to quickly populate their implied volatilities.

• Compare pre- and post-earnings volatility:
  • Pair with other MarketXLS volatility functions to analyze changes before and after a specific earnings date.

Common Questions and Troubleshooting

1. Why am I getting "NA"?
   • The symbol may be invalid or no data is available for that date.
   • Check spelling of the symbol and ensure the date is in a valid format.

2. Why does the function return "Refreshing"?
   • The data might be queued for retrieval on the server. The function will return a valid value once the update is complete.

3. Does the function handle very old dates?
   • If the provided date’s year is before 1978, the function automatically returns the most recent implied volatility data.

4. Can I use this for non-US symbols?
   • It primarily supports US market symbols in the database. If the symbol is unsupported, the function returns "NA."

Use ExEarningsImpliedVolatility1y to enhance your earnings-based evaluations by directly incorporating 1-year implied volatility data in your Excel spreadsheet. This powerful function saves time, reduces guesswork, and helps build robust, data-driven trading and investment strategies.