diff --git a/Common/Securities/SecurityExchangeHours.cs b/Common/Securities/SecurityExchangeHours.cs
index ae37013ec5e5..4c429f6e02d3 100644
--- a/Common/Securities/SecurityExchangeHours.cs
+++ b/Common/Securities/SecurityExchangeHours.cs
@@ -278,7 +278,7 @@ public DateTime GetPreviousMarketOpen(DateTime localDateTime, bool extendedMarke
             }
 
             // let's loop for a week
-            for (int i = 0; i < 7; i++)
+            for (int i = 0; i < 9; i++)
             {
                 DateTime? potentialResult = null;
                 foreach (var segment in marketHours.Segments.Reverse())