diff --git a/InnerDetector/InDetRecAlgs/SiSpacePointFormation/CMakeLists.txt b/InnerDetector/InDetRecAlgs/SiSpacePointFormation/CMakeLists.txt
index d5baf3893fecf0d158ff3d17b34fffc62052bffb..6dd0a7ca32c154e5d3532176d42af698a8e8eb26 100644
--- a/InnerDetector/InDetRecAlgs/SiSpacePointFormation/CMakeLists.txt
+++ b/InnerDetector/InDetRecAlgs/SiSpacePointFormation/CMakeLists.txt
@@ -8,6 +8,7 @@ atlas_subdir( SiSpacePointFormation )
 # Declare the package's dependencies:
 atlas_depends_on_subdirs( PUBLIC
                           Control/AthenaBaseComps
+                          Control/AthenaMonitoring
                           Control/AthContainers
                           DetectorDescription/GeoPrimitives
                           DetectorDescription/Identifier
@@ -31,7 +32,7 @@ atlas_add_library( SiSpacePointFormationLib
                    src/*.cxx
                    PUBLIC_HEADERS SiSpacePointFormation
                    INCLUDE_DIRS ${EIGEN_INCLUDE_DIRS}
-                   LINK_LIBRARIES ${EIGEN_LIBRARIES} AthenaBaseComps AthContainers GeoPrimitives Identifier GaudiKernel InDetReadoutGeometry InDetPrepRawData TrkSpacePoint VxVertex SiSpacePointToolLib BeamSpotConditionsData
+                   LINK_LIBRARIES ${EIGEN_LIBRARIES} AthenaBaseComps AthContainers GeoPrimitives Identifier GaudiKernel InDetReadoutGeometry InDetPrepRawData TrkSpacePoint VxVertex SiSpacePointToolLib BeamSpotConditionsData AthenaMonitoringLib
                    PRIVATE_LINK_LIBRARIES AtlasDetDescr xAODEventInfo InDetIdentifier )
 
 atlas_add_component( SiSpacePointFormation
@@ -39,3 +40,4 @@ atlas_add_component( SiSpacePointFormation
                      INCLUDE_DIRS ${EIGEN_INCLUDE_DIRS}
                      LINK_LIBRARIES ${EIGEN_LIBRARIES} AthenaBaseComps AthContainers GeoPrimitives Identifier GaudiKernel InDetReadoutGeometry InDetPrepRawData SiSpacePointToolLib TrkSpacePoint VxVertex AtlasDetDescr xAODEventInfo InDetIdentifier SiSpacePointFormationLib BeamSpotConditionsData )
 
+atlas_install_python_modules( python/*.py )
diff --git a/InnerDetector/InDetRecAlgs/SiSpacePointFormation/SiSpacePointFormation/SiTrackerSpacePointFinder.h b/InnerDetector/InDetRecAlgs/SiSpacePointFormation/SiSpacePointFormation/SiTrackerSpacePointFinder.h
index 61289b78c3ad7101a97e68fc5774435ad22d402c..deb6fcb76dd4b34186371d7d5eb242095a4d877e 100755
--- a/InnerDetector/InDetRecAlgs/SiSpacePointFormation/SiSpacePointFormation/SiTrackerSpacePointFinder.h
+++ b/InnerDetector/InDetRecAlgs/SiSpacePointFormation/SiSpacePointFormation/SiTrackerSpacePointFinder.h
@@ -49,7 +49,7 @@
 #define SiSpacePointFormation_SI_POINT_FINDER_H
 
 #include "AthenaBaseComps/AthReentrantAlgorithm.h"
-
+#include "AthenaMonitoring/GenericMonitoringTool.h"
 #include "AthContainers/DataVector.h"
 #include "GeoPrimitives/GeoPrimitives.h"
 #include "Identifier/Identifier.h"
@@ -172,6 +172,7 @@ namespace InDet {
     SG::UpdateHandleKey<SpacePointCache> m_SpacePointCache_SCTKey;
     SG::UpdateHandleKey<SpacePointCache> m_SpacePointCache_PixKey;
     ToolHandle< SiSpacePointMakerTool > m_SiSpacePointMakerTool;
+    ToolHandle<GenericMonitoringTool> m_monTool{this, "monTool", "", "Monitoring tool"};
 
     SG::ReadCondHandleKey<InDetDD::SiDetectorElementCollection> m_SCTDetEleCollKey{this, "SCTDetEleCollKey", "SCT_DetectorElementCollection", "Key of SiDetectorElementCollection for SCT"};
     SG::ReadCondHandleKey<InDet::SiElementPropertiesTable> m_SCTPropertiesKey{this, "SCTPropertiesKey", "SCT_ElementPropertiesTable", "Key of input SiElementPropertiesTable for SCT"};
diff --git a/InnerDetector/InDetRecAlgs/SiSpacePointFormation/python/InDetOnlineMonitor.py b/InnerDetector/InDetRecAlgs/SiSpacePointFormation/python/InDetOnlineMonitor.py
new file mode 100644
index 0000000000000000000000000000000000000000..991d5a6454b1dde2b8e8dd13e6934ac0f767e705
--- /dev/null
+++ b/InnerDetector/InDetRecAlgs/SiSpacePointFormation/python/InDetOnlineMonitor.py
@@ -0,0 +1,13 @@
+from AthenaMonitoring.GenericMonitoringTool import GenericMonitoringTool
+
+def InDetMonitoringTool():
+    newMonTool = GenericMonitoringTool("MonTool")
+    newMonTool.defineHistogram('numSctClusters',    type='TH1F',path='EXPERT',title="Number of SCT Clusters",xbins=250,xmin=0.,xmax=10000)
+    newMonTool.defineHistogram('numPixClusters',    type='TH1F',path='EXPERT',title="Number of PIXEL Clusters",     xbins=250, xmin=0., xmax=3000)
+    newMonTool.defineHistogram('numSctSpacePoints', type='TH1F',path='EXPERT',title="Number of SCT Space Points",   xbins=250, xmin=0., xmax=500)
+    newMonTool.defineHistogram('numPixSpacePoints', type='TH1F',path='EXPERT',title="Number of PIXEL Space Points", xbins=250, xmin=0., xmax=500)
+
+    return newMonTool
+
+
+
diff --git a/InnerDetector/InDetRecAlgs/SiSpacePointFormation/src/SiTrackerSpacePointFinder.cxx b/InnerDetector/InDetRecAlgs/SiSpacePointFormation/src/SiTrackerSpacePointFinder.cxx
index d415cb7c9f7ad19658b5333ceb3119d571be9db8..1e9fb3da1ee87f457f33c2395433a243e9e7e6b0 100755
--- a/InnerDetector/InDetRecAlgs/SiSpacePointFormation/src/SiTrackerSpacePointFinder.cxx
+++ b/InnerDetector/InDetRecAlgs/SiSpacePointFormation/src/SiTrackerSpacePointFinder.cxx
@@ -31,6 +31,7 @@ ATLAS Collaboration
 #include "xAODEventInfo/EventInfo.h"
 #include "StoreGate/ReadCondHandle.h"
 
+#include "AthenaMonitoring/Monitored.h"
 namespace InDet {
 
 //------------------------------------------------------------------------
@@ -154,6 +155,8 @@ StatusCode SiTrackerSpacePointFinder::initialize()
   ATH_CHECK(m_SpacePointCache_PixKey.initialize(!m_SpacePointCache_PixKey.key().empty()));
   m_cachemode = !m_SpacePointCache_SCTKey.key().empty() || !m_SpacePointCache_PixKey.key().empty();
 
+  if (!m_monTool.empty()) CHECK(m_monTool.retrieve());
+
   ATH_MSG_INFO( "SiTrackerSpacePointFinder::initialized for package version " << PACKAGE_VERSION );
   return StatusCode::SUCCESS;
 }
@@ -167,6 +170,12 @@ StatusCode SiTrackerSpacePointFinder::execute (const EventContext& ctx) const
   ++m_numberOfEvents;
   const InDetDD::SiDetectorElementCollection* elements = nullptr;
   const SiElementPropertiesTable* properties = nullptr;
+  
+  auto nReceivedClustersSCT = Monitored::Scalar<int>( "numSctClusters" , 0 );
+  auto nReceivedClustersPIX = Monitored::Scalar<int>( "numPixClusters" , 0 );
+  auto nSCTspacePoints = Monitored::Scalar<int>( "numSctSpacePoints"   , 0 );
+  auto nPIXspacePoints = Monitored::Scalar<int>( "numPixSpacePoints"   , 0 );
+
   if (m_selectSCTs) {
     SG::ReadCondHandle<InDetDD::SiDetectorElementCollection> sctDetEle(m_SCTDetEleCollKey, ctx);
     elements = sctDetEle.retrieve();
@@ -239,6 +248,7 @@ StatusCode SiTrackerSpacePointFinder::execute (const EventContext& ctx) const
     r_cache.SCTCContainer = sct_clcontainer.cptr();
 
     ATH_MSG_DEBUG( "SCT Cluster container found: " << sct_clcontainer->size() << " collections" );
+    nReceivedClustersSCT = sct_clcontainer->size();
     // Get hold of all clusters and iterate through them.
     // Pixel clusters will be converted immediately to pixel space points.
     // For SCT clusters, posssible pairs will be found and space points computed.
@@ -298,6 +308,8 @@ StatusCode SiTrackerSpacePointFinder::execute (const EventContext& ctx) const
     PixelClusterContainer::const_iterator colNext = pixel_clcontainer->begin();
     PixelClusterContainer::const_iterator lastCol = pixel_clcontainer->end();
 
+    nReceivedClustersPIX = pixel_clcontainer->size();
+
     int numColl=0;
     for (; colNext != lastCol; ++colNext)
     {
@@ -353,15 +365,20 @@ StatusCode SiTrackerSpacePointFinder::execute (const EventContext& ctx) const
   }
   if (m_selectPixels) {
     m_numberOfPixel += spacePointContainerPixel->numberOfCollections();
+    nPIXspacePoints  = spacePointContainerPixel->numberOfCollections();
   }
   if (m_selectSCTs) {
     m_numberOfSCT   += spacePointContainer_SCT->numberOfCollections();
+    nSCTspacePoints  = spacePointContainer_SCT->numberOfCollections();
   }
   if(m_cachemode)//Prevent unnecessary atomic counting
   {
      m_sctCacheHits  += sctCacheCount;
      m_pixCacheHits  += pixCacheCount;
   }
+
+  auto mon = Monitored::Group( m_monTool, nReceivedClustersPIX,nReceivedClustersSCT, nPIXspacePoints, nSCTspacePoints );
+
   return StatusCode::SUCCESS;
 }
 
diff --git a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/CommonSequences/InDetSetup.py b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/CommonSequences/InDetSetup.py
index 19437122c56351952cedab59550220277660b2b9..fc6898b57d5ccec08a4e947b2282c19e055edc7e 100644
--- a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/CommonSequences/InDetSetup.py
+++ b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/CommonSequences/InDetSetup.py
@@ -227,6 +227,7 @@ def makeInDetAlgs( whichSignature='', separateTrackParticleCreator='' ):
 
   from AthenaCommon.DetFlags import DetFlags
   from SiSpacePointFormation.SiSpacePointFormationConf import InDet__SiTrackerSpacePointFinder
+  from SiSpacePointFormation.InDetOnlineMonitor import InDetMonitoringTool
   InDetSiTrackerSpacePointFinder = InDet__SiTrackerSpacePointFinder(name                   = "InDetSiTrackerSpacePointFinder" + signature,
                                                                     SiSpacePointMakerTool  = InDetSiSpacePointMakerTool,
                                                                     PixelsClustersName     = "PixelTrigClusters",
@@ -238,7 +239,8 @@ def makeInDetAlgs( whichSignature='', separateTrackParticleCreator='' ):
                                                                     ProcessSCTs            = DetFlags.haveRIO.SCT_on(),
                                                                     ProcessOverlaps        = DetFlags.haveRIO.SCT_on(),
                                                                     SpacePointCacheSCT = InDetCacheNames.SpacePointCacheSCT,
-                                                                    SpacePointCachePix = InDetCacheNames.SpacePointCachePix,)
+                                                                    SpacePointCachePix = InDetCacheNames.SpacePointCachePix,
+                                                                    monTool            = InDetMonitoringTool())
 
   viewAlgs.append(InDetSiTrackerSpacePointFinder)