diff --git a/core/include/Variable/Variable.h b/core/include/Variable/Variable.h
index 5b731ab..eb9b144 100644
--- a/core/include/Variable/Variable.h
+++ b/core/include/Variable/Variable.h
@@ -40,6 +40,10 @@ public:
     SqpRange cacheRange() const noexcept;
     void setCacheRange(const SqpRange &cacheRange) noexcept;
 
+    /// @return the number of points hold by the variable. The number of points is updated each time
+    /// the data series changes
+    int nbPoints() const noexcept;
+
     /// Returns the real range of the variable, i.e. the min and max x-axis values of the data
     /// series between the range of the variable. The real range is updated each time the variable
     /// range or the data series changed
diff --git a/core/src/Variable/Variable.cpp b/core/src/Variable/Variable.cpp
index 64874ba..ca1c3cb 100644
--- a/core/src/Variable/Variable.cpp
+++ b/core/src/Variable/Variable.cpp
@@ -16,7 +16,8 @@ struct Variable::VariablePrivate {
               m_Range{dateTime},
               m_Metadata{metadata},
               m_DataSeries{nullptr},
-              m_RealRange{INVALID_RANGE}
+              m_RealRange{INVALID_RANGE},
+              m_NbPoints{0}
     {
     }
 
@@ -25,7 +26,8 @@ struct Variable::VariablePrivate {
               m_Range{other.m_Range},
               m_Metadata{other.m_Metadata},
               m_DataSeries{other.m_DataSeries != nullptr ? other.m_DataSeries->clone() : nullptr},
-              m_RealRange{other.m_RealRange}
+              m_RealRange{other.m_RealRange},
+              m_NbPoints{other.m_NbPoints}
     {
     }
 
@@ -67,6 +69,7 @@ struct Variable::VariablePrivate {
     QVariantHash m_Metadata;
     std::shared_ptr<IDataSeries> m_DataSeries;
     SqpRange m_RealRange;
+    int m_NbPoints;
 
     QReadWriteLock m_Lock;
 };
@@ -135,6 +138,11 @@ void Variable::setCacheRange(const SqpRange &cacheRange) noexcept
     impl->unlock();
 }
 
+int Variable::nbPoints() const noexcept
+{
+    return impl->m_NbPoints;
+}
+
 SqpRange Variable::realRange() const noexcept
 {
     return impl->m_RealRange;