diff --git a/system/jlib/jstatcodes.h b/system/jlib/jstatcodes.h
index aa133ad5ba2..9e034906601 100644
--- a/system/jlib/jstatcodes.h
+++ b/system/jlib/jstatcodes.h
@@ -311,6 +311,7 @@ enum StatisticKind
     StNumMatchRightRowsMax,
     StNumMatchCandidates,
     StNumMatchCandidatesMax,
+    StNumParallelExecute,
     StMax,
 
     //For any quantity there is potentially the following variants.
diff --git a/system/jlib/jstats.cpp b/system/jlib/jstats.cpp
index 92f02d1bdec..0fec9cecd14 100644
--- a/system/jlib/jstats.cpp
+++ b/system/jlib/jstats.cpp
@@ -983,6 +983,7 @@ static const constexpr StatisticMeta statsMetaData[StMax] = {
     { NUMSTAT(MatchRightRowsMax), "The largest number of right rows in a join group" },
     { NUMSTAT(MatchCandidates), "The number of candidate combinations of left and right rows forming join groups" },
     { NUMSTAT(MatchCandidatesMax), "The largest number of candidate combinations of left and right rows in a single group" },
+    { NUMSTAT(ParallelExecute), "The number of parallel execution of the activity" },
 };
 
 static MapStringTo<StatisticKind, StatisticKind> statisticNameMap(true);
diff --git a/thorlcr/graph/thgraphslave.hpp b/thorlcr/graph/thgraphslave.hpp
index f6b73c912c1..3d46ecf29d0 100644
--- a/thorlcr/graph/thgraphslave.hpp
+++ b/thorlcr/graph/thgraphslave.hpp
@@ -471,6 +471,7 @@ class graphslave_decl CThorStrandProcessor : public CInterfaceOf<IEngineRowStrea
 
 class graphslave_decl CThorStrandedActivity : public CSlaveActivity
 {
+    typedef CSlaveActivity PARENT;
 protected:
     CThorStrandOptions strandOptions;
     IArrayOf<CThorStrandProcessor> strands;
@@ -496,7 +497,12 @@ class graphslave_decl CThorStrandedActivity : public CSlaveActivity
     virtual CThorStrandProcessor *createStrandSourceProcessor(bool inputOrdered) = 0;
 
     inline unsigned numStrands() const { return strands.ordinality(); }
-
+// CSlaveActivity
+    virtual void gatherActiveStats(CRuntimeStatisticCollection &activeStats) const override
+    {
+        PARENT::gatherActiveStats(activeStats);
+        activeStats.addStatistic(StNumParallelExecute, numStrands());
+    }
 // IThorDataLink
     virtual IStrandJunction *getOutputStreams(CActivityBase &_ctx, unsigned idx, PointerArrayOf<IEngineRowStream> &streams, const CThorStrandOptions * consumerOptions, bool consumerOrdered, IOrderedCallbackCollection * orderedCallbacks) override;
     virtual unsigned __int64 queryTotalCycles() const override;
diff --git a/thorlcr/thorutil/thormisc.cpp b/thorlcr/thorutil/thormisc.cpp
index 09b3fc233af..973c8c9af18 100644
--- a/thorlcr/thorutil/thormisc.cpp
+++ b/thorlcr/thorutil/thormisc.cpp
@@ -75,7 +75,7 @@ static Owned<IMPtagAllocator> ClusterMPAllocator;
 // stat. mappings shared between master and slave activities
 const StatisticsMapping spillStatistics({StTimeSpillElapsed, StTimeSortElapsed, StNumSpills, StSizeSpillFile, StSizePeakTempDisk});
 const StatisticsMapping soapcallStatistics({StTimeSoapcall});
-const StatisticsMapping basicActivityStatistics({StTimeTotalExecute, StTimeLocalExecute, StTimeBlocked});
+const StatisticsMapping basicActivityStatistics({StTimeTotalExecute, StTimeLocalExecute, StTimeBlocked, StNumParallelExecute});
 const StatisticsMapping groupActivityStatistics({StNumGroups, StNumGroupMax}, basicActivityStatistics);
 const StatisticsMapping hashJoinActivityStatistics({StNumLeftRows, StNumRightRows}, basicActivityStatistics);
 const StatisticsMapping indexReadFileStatistics({}, diskReadRemoteStatistics, jhtreeCacheStatistics);