diff --git a/nncf/experimental/common/tensor_statistics/collectors.py b/nncf/experimental/common/tensor_statistics/collectors.py
index 2c6ad86416e..f0728f32dd3 100644
--- a/nncf/experimental/common/tensor_statistics/collectors.py
+++ b/nncf/experimental/common/tensor_statistics/collectors.py
@@ -420,7 +420,7 @@ def get_inplace_fn(self) -> Optional[InplaceInsertionFNType]:
         return None
 
     def _reduce_out_of_place(self, x: List[TensorType]) -> List[TensorType]:
-        return x
+        return deepcopy(x)
 
 
 class RawReducer(NoopReducer):
@@ -543,7 +543,7 @@ def __init__(self, num_samples: Optional[int]):
         super().__init__(None, num_samples=num_samples)
 
     def _register_reduced_input_impl(self, x: TensorType) -> None:
-        self._container.append(deepcopy(x))
+        self._container.append(x)
 
     def _aggregate_impl(self):
         return self._container