diff --git a/gtsam/hybrid/HybridGaussianISAM.cpp b/gtsam/hybrid/HybridGaussianISAM.cpp
index 0462d7998..0dd5fa38b 100644
--- a/gtsam/hybrid/HybridGaussianISAM.cpp
+++ b/gtsam/hybrid/HybridGaussianISAM.cpp
@@ -89,7 +89,7 @@ void HybridGaussianISAM::updateInternal(
 
   // Add the orphaned subtrees
   for (const sharedClique& orphan : *orphans) {
-    factors.push_back(std::make_shared<BayesTreeOrphanWrapper<Node>>(orphan));
+    factors.emplace_shared<BayesTreeOrphanWrapper<Node>>(orphan);
   }
 
   const VariableIndex index(factors);
diff --git a/gtsam/inference/ISAM-inst.h b/gtsam/inference/ISAM-inst.h
index aaebf9385..dc0750b72 100644
--- a/gtsam/inference/ISAM-inst.h
+++ b/gtsam/inference/ISAM-inst.h
@@ -41,7 +41,7 @@ void ISAM<BAYESTREE>::updateInternal(const FactorGraphType& newFactors,
 
   // Add the orphaned subtrees
   for (const sharedClique& orphan : *orphans)
-    factors.push_back(std::make_shared<BayesTreeOrphanWrapper<Clique> >(orphan));
+    factors.template emplace_shared<BayesTreeOrphanWrapper<Clique> >(orphan);
 
   // Get an ordering where the new keys are eliminated last
   const VariableIndex index(factors);
diff --git a/gtsam/nonlinear/NonlinearFactorGraph.h b/gtsam/nonlinear/NonlinearFactorGraph.h
index 92bfdaf20..cf2565725 100644
--- a/gtsam/nonlinear/NonlinearFactorGraph.h
+++ b/gtsam/nonlinear/NonlinearFactorGraph.h
@@ -189,7 +189,7 @@ namespace gtsam {
     template<typename T>
     void addExpressionFactor(const SharedNoiseModel& R, const T& z,
                              const Expression<T>& h) {
-      push_back(std::make_shared<ExpressionFactor<T> >(R, z, h));
+      this->emplace_shared<ExpressionFactor<T>>(R, z, h);
     }
 
     /**
diff --git a/gtsam/slam/tests/testGeneralSFMFactor.cpp b/gtsam/slam/tests/testGeneralSFMFactor.cpp
index 2342994c9..ec37b4105 100644
--- a/gtsam/slam/tests/testGeneralSFMFactor.cpp
+++ b/gtsam/slam/tests/testGeneralSFMFactor.cpp
@@ -50,7 +50,7 @@ class Graph: public NonlinearFactorGraph {
 public:
   void addMeasurement(int i, int j, const Point2& z,
       const SharedNoiseModel& model) {
-    push_back(std::make_shared<Projection>(z, model, X(i), L(j)));
+    emplace_shared<Projection>(z, model, X(i), L(j));
   }
 
   void addCameraConstraint(int j, const GeneralCamera& p) {
diff --git a/gtsam/slam/tests/testGeneralSFMFactor_Cal3Bundler.cpp b/gtsam/slam/tests/testGeneralSFMFactor_Cal3Bundler.cpp
index f8385352f..3be35f793 100644
--- a/gtsam/slam/tests/testGeneralSFMFactor_Cal3Bundler.cpp
+++ b/gtsam/slam/tests/testGeneralSFMFactor_Cal3Bundler.cpp
@@ -51,7 +51,7 @@ class Graph: public NonlinearFactorGraph {
 public:
   void addMeasurement(const int& i, const int& j, const Point2& z,
       const SharedNoiseModel& model) {
-    push_back(std::make_shared<Projection>(z, model, X(i), L(j)));
+    emplace_shared<Projection>(z, model, X(i), L(j));
   }
 
   void addCameraConstraint(int j, const GeneralCamera& p) {
diff --git a/gtsam/symbolic/SymbolicBayesNet.h b/gtsam/symbolic/SymbolicBayesNet.h
index f2c142762..bbfc968e1 100644
--- a/gtsam/symbolic/SymbolicBayesNet.h
+++ b/gtsam/symbolic/SymbolicBayesNet.h
@@ -69,7 +69,7 @@ namespace gtsam {
 
     /// Construct from a single conditional
     SymbolicBayesNet(SymbolicConditional&& c) {
-      push_back(std::make_shared<SymbolicConditional>(c));
+      emplace_shared<SymbolicConditional>(c);
     }
 
     /**
@@ -79,7 +79,7 @@ namespace gtsam {
      *     SymbolicBayesNet(SymbolicConditional(...))(SymbolicConditional(...));
      */
     SymbolicBayesNet& operator()(SymbolicConditional&& c) {
-      push_back(std::make_shared<SymbolicConditional>(c));
+      emplace_shared<SymbolicConditional>(c);
       return *this;
     }
 
diff --git a/gtsam/symbolic/SymbolicFactorGraph.cpp b/gtsam/symbolic/SymbolicFactorGraph.cpp
index ddcb3b2f3..1f17b8af2 100644
--- a/gtsam/symbolic/SymbolicFactorGraph.cpp
+++ b/gtsam/symbolic/SymbolicFactorGraph.cpp
@@ -40,22 +40,22 @@ namespace gtsam {
 
   /* ************************************************************************* */
   void SymbolicFactorGraph::push_factor(Key key) {
-    push_back(std::make_shared<SymbolicFactor>(key));
+    emplace_shared<SymbolicFactor>(key);
   }
 
   /* ************************************************************************* */
   void SymbolicFactorGraph::push_factor(Key key1, Key key2) {
-    push_back(std::make_shared<SymbolicFactor>(key1,key2));
+    emplace_shared<SymbolicFactor>(key1,key2);
   }
 
   /* ************************************************************************* */
   void SymbolicFactorGraph::push_factor(Key key1, Key key2, Key key3) {
-    push_back(std::make_shared<SymbolicFactor>(key1,key2,key3));
+    emplace_shared<SymbolicFactor>(key1,key2,key3);
   }
 
   /* ************************************************************************* */
   void SymbolicFactorGraph::push_factor(Key key1, Key key2, Key key3, Key key4) {
-    push_back(std::make_shared<SymbolicFactor>(key1,key2,key3,key4));
+    emplace_shared<SymbolicFactor>(key1,key2,key3,key4);
   }
 
   /* ************************************************************************* */
diff --git a/gtsam/symbolic/SymbolicFactorGraph.h b/gtsam/symbolic/SymbolicFactorGraph.h
index 01b532a5c..fdd5bc27c 100644
--- a/gtsam/symbolic/SymbolicFactorGraph.h
+++ b/gtsam/symbolic/SymbolicFactorGraph.h
@@ -97,7 +97,7 @@ namespace gtsam {
 
     /// Construct from a single factor
     SymbolicFactorGraph(SymbolicFactor&& c) {
-        push_back(std::make_shared<SymbolicFactor>(c));
+        emplace_shared<SymbolicFactor>(c);
     }
 
     /**
@@ -107,7 +107,7 @@ namespace gtsam {
      *     SymbolicFactorGraph(SymbolicFactor(...))(SymbolicFactor(...));
      */
     SymbolicFactorGraph& operator()(SymbolicFactor&& c) {
-        push_back(std::make_shared<SymbolicFactor>(c));
+        emplace_shared<SymbolicFactor>(c);
         return *this;
     }