--- a/progs/drumb.scala	Wed Nov 08 15:45:33 2017 +0000
+++ b/progs/drumb.scala	Wed Nov 08 16:07:44 2017 +0000
@@ -5,7 +5,7 @@
 
 val blchip_portfolio = List("GOOG", "AAPL", "MSFT", "IBM", "FB", "YHOO", "AMZN", "BIDU")
 val rstate_portfolio = List("PLD", "PSA", "AMT", "AIV", "AVB", "BXP", "CBG", "CCI", 
-                            "DLR", "EQIX", "EQR", "EXR", "FRT", "GGP", "HCP") 
+                            "DLR", "EQIX", "EQR", "ESS", "EXR", "FRT", "GGP", "HCP") 
 
 
 // (1) The function below should obtain the first trading price