TickerSummaryViewModel.cs

    public class TickerSummaryViewModel
    {
        public string Ticker { get; set; }
        public decimal CrimsQuantity { get; set; }
        public decimal EmsQuantity { get; set; }

        public decimal Difference
        {
            get { return CrimsQuantity - EmsQuantity; }
            set { throw new NotImplementedException("I only have a setter because the XmlSerializer is stupid, please ignore me."); }
        }
    }