when to use stock option to support holdout when is a forecast period a stock stock forecasting what is the holding period can i use an outsample period as a holdout period which is the in-sample period when do we use the forecast period and hold out period when should stock return be supported by a holding out period? when to pick holding period or forecast period how many weeks of stock forecasting when should a moving window be selected? what is the out-sample period when should an out-sample period be used what should be in sample for forecast which of the following is a holding period of a stock forecasted to be a fixed period? what is the forecast period for the moving window what is the holding out period for a stock what is a holding out period when are stocks moving what are the stocks that you should forecast?