diff --git a/Interface/IPositionModel.cs b/Interface/IPositionModel.cs
new file mode 100644
index 0000000..92504af
--- /dev/null
+++ b/Interface/IPositionModel.cs
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TradeBlotter.Interface
+{
+  public interface IPositionModel
+  {
+    String Symbol {get;set;}
+
+    DateTime PurchaseDate {get;set;}
+
+    DateTime SellDate {get;set;}
+
+    double Shares {get;set;}
+
+    double PurchasePrice {get;set;}
+
+    double CurrentPrice {get;set;}      // if sell date is not epoch then this is the sell price
+
+  }
+}