diff --git a/components/ForecastView.tsx b/components/ForecastView.tsx
index 61a545b..fbf2858 100644
--- a/components/ForecastView.tsx
+++ b/components/ForecastView.tsx
@@ -49,7 +49,13 @@ const ForecastRow: React.FC<{
     }
 
     // Calculations for new columns
-    const forecastPeriod = item.forecastUnits || 0;
+    // Forecast Period: Sum of forecast units for active months (YTD)
+    const forecastPeriod = useMemo(() => {
+        return activeMonths.reduce((sum, month) => {
+            return sum + (item.monthlyData?.[month]?.forecastUnits || 0);
+        }, 0);
+    }, [item, activeMonths]);
+
     const actualUnits = item.actualUnits || 0;
     const annualForecast = item.annualForecast || 0;
 
@@ -180,12 +186,19 @@ const ForecastView: React.FC<ForecastViewProps> = ({
     }, [data, filters.line, filters.asin, filters.sku]);
 
     const globalSummary = useMemo(() => {
-        return baseFilteredData.reduce((acc, curr) => ({
-            actualUnits: acc.actualUnits + (curr.actualUnits || 0),
-            forecastUnits: acc.forecastUnits + (curr.forecastUnits || 0),
-            annualForecast: acc.annualForecast + (curr.annualForecast || 0),
-        }), { actualUnits: 0, forecastUnits: 0, annualForecast: 0 });
-    }, [baseFilteredData]);
+        return baseFilteredData.reduce((acc, curr) => {
+            // Calculate Forecast Period (YTD) for this item
+            const itemPeriodForecast = activeMonths.reduce((sum, month) => {
+                return sum + (curr.monthlyData?.[month]?.forecastUnits || 0);
+            }, 0);
+
+            return {
+                actualUnits: acc.actualUnits + (curr.actualUnits || 0),
+                forecastUnits: acc.forecastUnits + itemPeriodForecast,
+                annualForecast: acc.annualForecast + (curr.annualForecast || 0),
+            };
+        }, { actualUnits: 0, forecastUnits: 0, annualForecast: 0 });
+    }, [baseFilteredData, activeMonths]);
 
     const chartData = useMemo(() => {
         const dataMap = new Map<string, { name: string; actual: number; forecast: number }>();