diff --git a/docs/changelog/128472.yaml b/docs/changelog/128472.yaml
new file mode 100644
index 0000000000000..ad15127cab432
--- /dev/null
+++ b/docs/changelog/128472.yaml
@@ -0,0 +1,7 @@
+pr: 128472
+summary: "Aggs: Fix significant terms not finding background docuemnts for nested\
+  \ fields"
+area: Aggregations
+type: bug
+issues:
+ - 101163
diff --git a/modules/aggregations/src/yamlRestTest/resources/rest-api-spec/test/aggregations/sig_terms_nested.yml b/modules/aggregations/src/yamlRestTest/resources/rest-api-spec/test/aggregations/sig_terms_nested.yml
new file mode 100644
index 0000000000000..97e2c94b9f22f
--- /dev/null
+++ b/modules/aggregations/src/yamlRestTest/resources/rest-api-spec/test/aggregations/sig_terms_nested.yml
@@ -0,0 +1,506 @@
+setup:
+  - requires:
+      capabilities:
+        - method: POST
+          path: /_search
+          capabilities: [ significant_terms_on_nested_fields ]
+      test_runner_features: [capabilities, close_to]
+      reason: "bug fix"
+
+  - do:
+      indices.create:
+        index: test
+        body:
+          settings:
+            number_of_shards: "1"
+          mappings:
+            dynamic: "strict"
+            properties:
+              type:
+                type: keyword
+              value:
+                type: integer
+              value_keyword:
+                type: keyword
+              nested:
+                type: nested
+                properties:
+                  value:
+                    type: integer
+                  value_keyword:
+                    type: keyword
+                  nested:
+                    type: nested
+                    properties:
+                      value:
+                        type: integer
+                      value_keyword:
+                        type: keyword
+
+  # Type:normal has many "1" and just one "2". Type:outlier has the same amount of "1" and "2"
+  - do:
+      bulk:
+        index: test
+        refresh: true
+        body:
+          - '{ "index": {} }'
+          - '{ "type": "normal", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "normal", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "normal", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "normal", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "normal", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "normal", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "normal", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "normal", "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2" } } }'
+
+          - '{ "index": {} }'
+          - '{ "type": "outlier", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "outlier", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "outlier", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "outlier", "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1", "nested": { "value": 1, "value_keyword": "1" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "outlier", "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "outlier", "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "outlier", "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2" } } }'
+          - '{ "index": {} }'
+          - '{ "type": "outlier", "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2", "nested": { "value": 2, "value_keyword": "2" } } }'
+
+---
+"Data checks":
+  - do:
+      search:
+        rest_total_hits_as_int: true
+        index: test
+  - match: {hits.total: 16}
+
+  - do:
+      search:
+        size: 0
+        rest_total_hits_as_int: true
+        index: test
+        body: {
+          "aggs": {
+            "value_terms": {
+              "terms": {
+                "field": "value"
+              }
+            },
+            "value_keyword_terms": {
+              "terms": {
+                "field": "value_keyword"
+              }
+            },
+            "nested": {
+              "nested": {
+                "path": "nested"
+              },
+              "aggs": {
+                "nested_value_terms": {
+                  "terms": {
+                    "field": "nested.value"
+                  }
+                },
+                "nested_value_keyword_terms": {
+                  "terms": {
+                    "field": "nested.value_keyword"
+                  }
+                },
+                "nested": {
+                  "nested": {
+                    "path": "nested.nested"
+                  },
+                  "aggs": {
+                    "nested_value_terms": {
+                      "terms": {
+                        "field": "nested.nested.value"
+                      }
+                    },
+                    "nested_value_keyword_terms": {
+                      "terms": {
+                        "field": "nested.nested.value_keyword"
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+
+  # Check value
+  - length: {aggregations.value_terms.buckets: 2}
+  - match: {aggregations.value_terms.buckets.0.key: 1}
+  - match: {aggregations.value_terms.buckets.0.doc_count: 11}
+  - match: {aggregations.value_terms.buckets.1.key: 2}
+  - match: {aggregations.value_terms.buckets.1.doc_count: 5}
+  # Check value_keyword
+  - length: {aggregations.value_keyword_terms.buckets: 2}
+  - match: {aggregations.value_keyword_terms.buckets.0.key: "1"}
+  - match: {aggregations.value_keyword_terms.buckets.0.doc_count: 11}
+  - match: {aggregations.value_keyword_terms.buckets.1.key: "2"}
+  - match: {aggregations.value_keyword_terms.buckets.1.doc_count: 5}
+
+  # Nested
+  - match: {aggregations.nested.doc_count: 16}
+  # Check nested value
+  - length: {aggregations.nested.nested_value_terms.buckets: 2}
+  - match: {aggregations.nested.nested_value_terms.buckets.0.key: 1}
+  - match: {aggregations.nested.nested_value_terms.buckets.0.doc_count: 11}
+  - match: {aggregations.nested.nested_value_terms.buckets.1.key: 2}
+  - match: {aggregations.nested.nested_value_terms.buckets.1.doc_count: 5}
+  # Check nested value_keyword
+  - length: {aggregations.nested.nested_value_keyword_terms.buckets: 2}
+  - match: {aggregations.nested.nested_value_keyword_terms.buckets.0.key: "1"}
+  - match: {aggregations.nested.nested_value_keyword_terms.buckets.0.doc_count: 11}
+  - match: {aggregations.nested.nested_value_keyword_terms.buckets.1.key: "2"}
+  - match: {aggregations.nested.nested_value_keyword_terms.buckets.1.doc_count: 5}
+
+  # Nested>nested
+  - match: {aggregations.nested.nested.doc_count: 16}
+  # Check nested value
+  - length: {aggregations.nested.nested.nested_value_terms.buckets: 2}
+  - match: {aggregations.nested.nested.nested_value_terms.buckets.0.key: 1}
+  - match: {aggregations.nested.nested.nested_value_terms.buckets.0.doc_count: 11}
+  - match: {aggregations.nested.nested.nested_value_terms.buckets.1.key: 2}
+  - match: {aggregations.nested.nested.nested_value_terms.buckets.1.doc_count: 5}
+  # Check nested value_keyword
+  - length: {aggregations.nested.nested.nested_value_keyword_terms.buckets: 2}
+  - match: {aggregations.nested.nested.nested_value_keyword_terms.buckets.0.key: "1"}
+  - match: {aggregations.nested.nested.nested_value_keyword_terms.buckets.0.doc_count: 11}
+  - match: {aggregations.nested.nested.nested_value_keyword_terms.buckets.1.key: "2"}
+  - match: {aggregations.nested.nested.nested_value_keyword_terms.buckets.1.doc_count: 5}
+
+---
+"Normal fields":
+  - do:
+      search:
+        size: 0
+        rest_total_hits_as_int: true
+        index: test
+        body: {
+          "query": {
+            "terms": { "type": [ "outlier" ] }
+          },
+          "aggs": {
+            "significant_terms": {
+              "significant_terms": {
+                "field": "value"
+              }
+            },
+            "significant_terms_keyword": {
+              "significant_terms": {
+                "field": "value_keyword"
+              }
+            }
+          }
+        }
+
+  - match: {aggregations.significant_terms.doc_count: 8}
+  - match: {aggregations.significant_terms.bg_count: 16}
+  - length: {aggregations.significant_terms.buckets: 1}
+  - match: {aggregations.significant_terms.buckets.0.key: 2}
+  - match: {aggregations.significant_terms.buckets.0.doc_count: 4}
+  - match: {aggregations.significant_terms.buckets.0.bg_count: 5}
+  - close_to: { aggregations.significant_terms.buckets.0.score: {value: 0.3, error: 0.000001 }}
+
+  - match: {aggregations.significant_terms_keyword.doc_count: 8}
+  - match: {aggregations.significant_terms_keyword.bg_count: 16}
+  - length: {aggregations.significant_terms_keyword.buckets: 1}
+  - match: {aggregations.significant_terms_keyword.buckets.0.key: "2"}
+  - match: {aggregations.significant_terms_keyword.buckets.0.doc_count: 4}
+  - match: {aggregations.significant_terms_keyword.buckets.0.bg_count: 5}
+  - close_to: { aggregations.significant_terms_keyword.buckets.0.score: {value: 0.3, error: 0.000001 }}
+
+---
+"Normal fields with neutral background filter":
+  - do:
+      search:
+        size: 0
+        rest_total_hits_as_int: true
+        index: test
+        body: {
+          "query": {
+            "terms": { "type": [ "outlier" ] }
+          },
+          "aggs": {
+            "significant_terms": {
+              "significant_terms": {
+                "field": "value",
+                "background_filter": {
+                  "terms": { "type": ["normal", "outlier"] }
+                }
+              }
+            },
+            "significant_terms_keyword": {
+              "significant_terms": {
+                "field": "value_keyword",
+                "background_filter": {
+                  "terms": { "type": ["normal", "outlier"] }
+                }
+              }
+            }
+          }
+        }
+
+  - match: {aggregations.significant_terms.doc_count: 8}
+  - match: {aggregations.significant_terms.bg_count: 16}
+  - length: {aggregations.significant_terms.buckets: 1}
+  - match: {aggregations.significant_terms.buckets.0.key: 2}
+  - match: {aggregations.significant_terms.buckets.0.doc_count: 4}
+  - match: {aggregations.significant_terms.buckets.0.bg_count: 5}
+  - close_to: { aggregations.significant_terms.buckets.0.score: {value: 0.3, error: 0.000001 }}
+
+  - match: {aggregations.significant_terms_keyword.doc_count: 8}
+  - match: {aggregations.significant_terms_keyword.bg_count: 16}
+  - length: {aggregations.significant_terms_keyword.buckets: 1}
+  - match: {aggregations.significant_terms_keyword.buckets.0.key: "2"}
+  - match: {aggregations.significant_terms_keyword.buckets.0.doc_count: 4}
+  - match: {aggregations.significant_terms_keyword.buckets.0.bg_count: 5}
+  - close_to: { aggregations.significant_terms_keyword.buckets.0.score: {value: 0.3, error: 0.000001 }}
+
+---
+"Normal fields with background filter":
+  - do:
+      search:
+        size: 0
+        rest_total_hits_as_int: true
+        index: test
+        body: {
+          "query": {
+            "terms": { "type": [ "outlier" ] }
+          },
+          "aggs": {
+            "significant_terms": {
+              "significant_terms": {
+                "field": "value",
+                "background_filter": {
+                  "terms": { "type": ["outlier"] }
+                }
+              }
+            },
+            "significant_terms_keyword": {
+              "significant_terms": {
+                "field": "value_keyword",
+                "background_filter": {
+                  "terms": { "type": ["outlier"] }
+                }
+              }
+            }
+          }
+        }
+
+  - match: {aggregations.significant_terms.doc_count: 8}
+  - match: {aggregations.significant_terms.bg_count: 8}
+  - length: {aggregations.significant_terms.buckets: 0}
+
+  - match: {aggregations.significant_terms_keyword.doc_count: 8}
+  - match: {aggregations.significant_terms_keyword.bg_count: 8}
+  - length: {aggregations.significant_terms_keyword.buckets: 0}
+
+---
+"Nested fields":
+  - do:
+      search:
+        size: 0
+        rest_total_hits_as_int: true
+        index: test
+        body: {
+          "query": {
+            "terms": { "type": [ "outlier" ] }
+          },
+          "aggs": {
+            "nested": {
+              "nested": {
+                "path": "nested"
+              },
+              "aggs": {
+                "significant_terms": {
+                  "significant_terms": {
+                    "field": "nested.value"
+                  }
+                },
+                "significant_terms_keyword": {
+                  "significant_terms": {
+                    "field": "nested.value_keyword"
+                  }
+                }
+              }
+            }
+          }
+        }
+
+  - match: {aggregations.nested.significant_terms.doc_count: 8}
+  - match: {aggregations.nested.significant_terms.bg_count: 16}
+  - length: {aggregations.nested.significant_terms.buckets: 1}
+  - match: {aggregations.nested.significant_terms.buckets.0.key: 2}
+  - match: {aggregations.nested.significant_terms.buckets.0.doc_count: 4}
+  - match: {aggregations.nested.significant_terms.buckets.0.bg_count: 5}
+  - close_to: { aggregations.nested.significant_terms.buckets.0.score: {value: 0.3, error: 0.000001 }}
+
+  - match: {aggregations.nested.significant_terms_keyword.doc_count: 8}
+  - match: {aggregations.nested.significant_terms_keyword.bg_count: 16}
+  - length: {aggregations.nested.significant_terms_keyword.buckets: 1}
+  - match: {aggregations.nested.significant_terms_keyword.buckets.0.key: "2"}
+  - match: {aggregations.nested.significant_terms_keyword.buckets.0.doc_count: 4}
+  - match: {aggregations.nested.significant_terms_keyword.buckets.0.bg_count: 5}
+  - close_to: { aggregations.nested.significant_terms_keyword.buckets.0.score: {value: 0.3, error: 0.000001 }}
+
+---
+"Nested fields with neutral background filter":
+  - do:
+      search:
+        size: 0
+        rest_total_hits_as_int: true
+        index: test
+        body: {
+          "query": {
+            "terms": { "type": [ "outlier" ] }
+          },
+          "aggs": {
+            "nested": {
+              "nested": {
+                "path": "nested"
+              },
+              "aggs": {
+                "significant_terms": {
+                  "significant_terms": {
+                    "field": "nested.value",
+                    "background_filter": {
+                      "terms": { "type": ["normal", "outlier"] }
+                    }
+                  }
+                },
+                "significant_terms_keyword": {
+                  "significant_terms": {
+                    "field": "nested.value_keyword",
+                    "background_filter": {
+                      "terms": { "type": ["normal", "outlier"] }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+
+  - match: {aggregations.nested.significant_terms.doc_count: 8}
+  - match: {aggregations.nested.significant_terms.bg_count: 16}
+  - length: {aggregations.nested.significant_terms.buckets: 1}
+  - match: {aggregations.nested.significant_terms.buckets.0.key: 2}
+  - match: {aggregations.nested.significant_terms.buckets.0.doc_count: 4}
+  - match: {aggregations.nested.significant_terms.buckets.0.bg_count: 5}
+  - close_to: { aggregations.nested.significant_terms.buckets.0.score: {value: 0.3, error: 0.000001 }}
+
+  - match: {aggregations.nested.significant_terms_keyword.doc_count: 8}
+  - match: {aggregations.nested.significant_terms_keyword.bg_count: 16}
+  - length: {aggregations.nested.significant_terms_keyword.buckets: 1}
+  - match: {aggregations.nested.significant_terms_keyword.buckets.0.key: "2"}
+  - match: {aggregations.nested.significant_terms_keyword.buckets.0.doc_count: 4}
+  - match: {aggregations.nested.significant_terms_keyword.buckets.0.bg_count: 5}
+  - close_to: { aggregations.nested.significant_terms_keyword.buckets.0.score: {value: 0.3, error: 0.000001 }}
+
+---
+"Nested fields with background filter":
+  - do:
+      search:
+        size: 0
+        rest_total_hits_as_int: true
+        index: test
+        body: {
+          "query": {
+            "terms": { "type": [ "outlier" ] }
+          },
+          "aggs": {
+            "nested": {
+              "nested": {
+                "path": "nested"
+              },
+              "aggs": {
+                "significant_terms": {
+                  "significant_terms": {
+                    "field": "nested.value",
+                    "background_filter": {
+                      "terms": { "type": ["outlier"] }
+                    }
+                  }
+                },
+                "significant_terms_keyword": {
+                  "significant_terms": {
+                    "field": "nested.value_keyword",
+                    "background_filter": {
+                      "terms": { "type": ["outlier"] }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+
+  - match: {aggregations.nested.significant_terms.doc_count: 8}
+  - match: {aggregations.nested.significant_terms.bg_count: 8}
+  - length: {aggregations.nested.significant_terms.buckets: 0}
+
+  - match: {aggregations.nested.significant_terms_keyword.doc_count: 8}
+  - match: {aggregations.nested.significant_terms_keyword.bg_count: 8}
+  - length: {aggregations.nested.significant_terms_keyword.buckets: 0}
+
+---
+"Doubly nested fields":
+  - do:
+      search:
+        size: 0
+        rest_total_hits_as_int: true
+        index: test
+        body: {
+          "query": {
+            "terms": { "type": [ "outlier" ] }
+          },
+          "aggs": {
+            "nested": {
+              "nested": {
+                "path": "nested.nested"
+              },
+              "aggs": {
+                "significant_terms": {
+                  "significant_terms": {
+                    "field": "nested.nested.value"
+                  }
+                },
+                "significant_terms_keyword": {
+                  "significant_terms": {
+                    "field": "nested.nested.value_keyword"
+                  }
+                }
+              }
+            }
+          }
+        }
+
+  - match: {aggregations.nested.significant_terms.doc_count: 8}
+  - match: {aggregations.nested.significant_terms.bg_count: 16}
+  - length: {aggregations.nested.significant_terms.buckets: 1}
+  - match: {aggregations.nested.significant_terms.buckets.0.key: 2}
+  - match: {aggregations.nested.significant_terms.buckets.0.doc_count: 4}
+  - match: {aggregations.nested.significant_terms.buckets.0.bg_count: 5}
+  - close_to: { aggregations.nested.significant_terms.buckets.0.score: {value: 0.3, error: 0.000001 }}
+
+  - match: {aggregations.nested.significant_terms_keyword.doc_count: 8}
+  - match: {aggregations.nested.significant_terms_keyword.bg_count: 16}
+  - length: {aggregations.nested.significant_terms_keyword.buckets: 1}
+  - match: {aggregations.nested.significant_terms_keyword.buckets.0.key: "2"}
+  - match: {aggregations.nested.significant_terms_keyword.buckets.0.doc_count: 4}
+  - match: {aggregations.nested.significant_terms_keyword.buckets.0.bg_count: 5}
+  - close_to: { aggregations.nested.significant_terms_keyword.buckets.0.score: {value: 0.3, error: 0.000001 }}
diff --git a/server/src/main/java/org/elasticsearch/rest/action/search/SearchCapabilities.java b/server/src/main/java/org/elasticsearch/rest/action/search/SearchCapabilities.java
index f8d3a3a65abc5..8b6b48cb5b077 100644
--- a/server/src/main/java/org/elasticsearch/rest/action/search/SearchCapabilities.java
+++ b/server/src/main/java/org/elasticsearch/rest/action/search/SearchCapabilities.java
@@ -50,6 +50,8 @@ private SearchCapabilities() {}
 
     private static final String SIGNIFICANT_TERMS_BACKGROUND_FILTER_AS_SUB = "significant_terms_background_filter_as_sub";
 
+    private static final String SIGNIFICANT_TERMS_ON_NESTED_FIELDS = "significant_terms_on_nested_fields";
+
     public static final Set<String> CAPABILITIES;
     static {
         HashSet<String> capabilities = new HashSet<>();
@@ -69,6 +71,7 @@ private SearchCapabilities() {}
         capabilities.add(HIGHLIGHT_MAX_ANALYZED_OFFSET_DEFAULT);
         capabilities.add(INDEX_SELECTOR_SYNTAX);
         capabilities.add(SIGNIFICANT_TERMS_BACKGROUND_FILTER_AS_SUB);
+        capabilities.add(SIGNIFICANT_TERMS_ON_NESTED_FIELDS);
         CAPABILITIES = Set.copyOf(capabilities);
     }
 }
diff --git a/server/src/main/java/org/elasticsearch/search/aggregations/bucket/terms/SignificanceLookup.java b/server/src/main/java/org/elasticsearch/search/aggregations/bucket/terms/SignificanceLookup.java
index 9bd0e7eac35a0..3395f61cd51ed 100644
--- a/server/src/main/java/org/elasticsearch/search/aggregations/bucket/terms/SignificanceLookup.java
+++ b/server/src/main/java/org/elasticsearch/search/aggregations/bucket/terms/SignificanceLookup.java
@@ -19,6 +19,7 @@
 import org.apache.lucene.search.MatchAllDocsQuery;
 import org.apache.lucene.search.Query;
 import org.apache.lucene.search.TermQuery;
+import org.apache.lucene.search.join.ScoreMode;
 import org.apache.lucene.util.BytesRef;
 import org.elasticsearch.common.lucene.index.FilterableTermsEnum;
 import org.elasticsearch.common.util.BigArrays;
@@ -28,6 +29,7 @@
 import org.elasticsearch.core.Releasable;
 import org.elasticsearch.core.Releasables;
 import org.elasticsearch.index.mapper.MappedFieldType;
+import org.elasticsearch.index.query.NestedQueryBuilder;
 import org.elasticsearch.index.query.QueryBuilder;
 import org.elasticsearch.index.query.TermQueryBuilder;
 import org.elasticsearch.search.DocValueFormat;
@@ -159,7 +161,7 @@ public void close() {
      * Get the background frequency of a {@link BytesRef} term.
      */
     private long getBackgroundFrequency(BytesRef term) throws IOException {
-        return getBackgroundFrequency(context.buildQuery(new TermQueryBuilder(fieldType.name(), format.format(term).toString())));
+        return getBackgroundFrequency(context.buildQuery(makeBackgroundFrequencyQuery(format.format(term).toString())));
     }
 
     /**
@@ -214,7 +216,18 @@ public void close() {
      * Get the background frequency of a {@code long} term.
      */
     private long getBackgroundFrequency(long term) throws IOException {
-        return getBackgroundFrequency(context.buildQuery(new TermQueryBuilder(fieldType.name(), format.format(term).toString())));
+        return getBackgroundFrequency(context.buildQuery(makeBackgroundFrequencyQuery(format.format(term).toString())));
+    }
+
+    private QueryBuilder makeBackgroundFrequencyQuery(String value) {
+        QueryBuilder queryBuilder = new TermQueryBuilder(fieldType.name(), value);
+
+        var nestedParentField = context.nestedLookup().getNestedParent(fieldType.name());
+        if (nestedParentField != null) {
+            queryBuilder = new NestedQueryBuilder(nestedParentField, queryBuilder, ScoreMode.Avg);
+        }
+
+        return queryBuilder;
     }
 
     private long getBackgroundFrequency(Query query) throws IOException {