what is the difference between a positive and a negative value for a var when do vars go missing why is var missing from portfolio when do you get the holidays what is the holiday for var what is the var of a stock when do s&p returns change? what's an example of a missing holiday when is a var what is the average yearly return on s&p indices? when is var how to calculate the var on a time series ssp var why do we always have holidays in the s&p when do stocks return on holidays what is the date of the stock market return to zero when is var when does var change in stock market? how do you calculate volatility how to use holiday for portfolio analysis