diff --git a/apple/OmnivoreKit/Sources/Models/CoreData/CoreDataModel.xcdatamodeld/CoreDataModel.xcdatamodel/contents b/apple/OmnivoreKit/Sources/Models/CoreData/CoreDataModel.xcdatamodeld/CoreDataModel.xcdatamodel/contents
index b3cb44951..6cd4746fd 100644
--- a/apple/OmnivoreKit/Sources/Models/CoreData/CoreDataModel.xcdatamodeld/CoreDataModel.xcdatamodel/contents
+++ b/apple/OmnivoreKit/Sources/Models/CoreData/CoreDataModel.xcdatamodeld/CoreDataModel.xcdatamodel/contents
@@ -68,6 +68,7 @@
         </uniquenessConstraints>
     </entity>
     <entity name="PersistedArticleContent" representedClassName="PersistedArticleContent" syncable="YES" codeGenerationType="class">
+        <attribute name="highlightsJSONString" optional="YES" attributeType="String"/>
         <attribute name="htmlContent" attributeType="String"/>
         <attribute name="slug" attributeType="String"/>
         <uniquenessConstraints>
@@ -92,7 +93,7 @@
         <element name="LinkedItem" positionX="-18" positionY="63" width="128" height="314"/>
         <element name="LinkedItemLabel" positionX="-36" positionY="18" width="128" height="104"/>
         <element name="NewsletterEmail" positionX="0" positionY="180" width="128" height="74"/>
-        <element name="PersistedArticleContent" positionX="9" positionY="108" width="128" height="59"/>
+        <element name="PersistedArticleContent" positionX="9" positionY="108" width="128" height="74"/>
         <element name="Viewer" positionX="45" positionY="234" width="128" height="89"/>
     </elements>
 </model>
\ No newline at end of file
diff --git a/apple/OmnivoreKit/Sources/Models/DataModels/ArticleContentDep.swift b/apple/OmnivoreKit/Sources/Models/DataModels/ArticleContentDep.swift
index 101900231..f33fec12f 100644
--- a/apple/OmnivoreKit/Sources/Models/DataModels/ArticleContentDep.swift
+++ b/apple/OmnivoreKit/Sources/Models/DataModels/ArticleContentDep.swift
@@ -3,16 +3,23 @@ import Foundation
 public struct ArticleContentDep {
   public let htmlContent: String
   public let highlights: [HighlightDep]
+  public let storedHighlightsJSONString: String?
 
   public init(
     htmlContent: String,
-    highlights: [HighlightDep]
+    highlights: [HighlightDep],
+    storedHighlightsJSONString: String?
   ) {
     self.htmlContent = htmlContent
     self.highlights = highlights
+    self.storedHighlightsJSONString = storedHighlightsJSONString
   }
 
   public var highlightsJSONString: String {
+    if let storedHighlightsJSONString = storedHighlightsJSONString {
+      return storedHighlightsJSONString
+    }
+
     let jsonData = try? JSONEncoder().encode(highlights)
     guard let jsonData = jsonData else { return "[]" }
     return String(data: jsonData, encoding: .utf8) ?? "[]"
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/DataService.swift b/apple/OmnivoreKit/Sources/Services/DataService/DataService.swift
index e88b97434..5ff65440e 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/DataService.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/DataService.swift
@@ -81,8 +81,12 @@ public extension DataService {
     fetchRequest.predicate = NSPredicate(
       format: "slug = %@", slug
     )
-    if let htmlContent = try? persistentContainer.viewContext.fetch(fetchRequest).first?.htmlContent {
-      return ArticleContentDep(htmlContent: htmlContent, highlights: [])
+    if let articleContent = try? persistentContainer.viewContext.fetch(fetchRequest).first {
+      return ArticleContentDep(
+        htmlContent: articleContent.htmlContent ?? "",
+        highlights: [],
+        storedHighlightsJSONString: articleContent.highlightsJSONString
+      )
     } else {
       return nil
     }
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Queries/ArticleContentQuery.swift b/apple/OmnivoreKit/Sources/Services/DataService/Queries/ArticleContentQuery.swift
index f63a51c00..703f8683b 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Queries/ArticleContentQuery.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Queries/ArticleContentQuery.swift
@@ -13,7 +13,8 @@ public extension DataService {
     let articleSelection = Selection.Article {
       ArticleContentDep(
         htmlContent: try $0.content(),
-        highlights: try $0.highlights(selection: highlightSelection.list)
+        highlights: try $0.highlights(selection: highlightSelection.list),
+        storedHighlightsJSONString: nil
       )
     }
 
@@ -43,7 +44,7 @@ public extension DataService {
             switch payload.data {
             case let .success(result: result):
               // store result in core data
-              self?.persistArticleContent(htmlContent: result.htmlContent, slug: slug)
+              self?.persistArticleContent(htmlContent: result.htmlContent, slug: slug, highlights: result.highlights)
               promise(.success(result))
             case .error:
               promise(.failure(.unknown))
@@ -60,11 +61,15 @@ public extension DataService {
 }
 
 extension DataService {
-  func persistArticleContent(htmlContent: String, slug: String) {
+  func persistArticleContent(htmlContent: String, slug: String, highlights: [HighlightDep]) {
     let persistedArticleContent = PersistedArticleContent(context: persistentContainer.viewContext)
     persistedArticleContent.htmlContent = htmlContent
     persistedArticleContent.slug = slug
 
+    if let jsonData = try? JSONEncoder().encode(highlights) {
+      persistedArticleContent.highlightsJSONString = String(data: jsonData, encoding: .utf8)
+    }
+
     do {
       try persistentContainer.viewContext.save()
       print("PersistedArticleContent saved succesfully")