diff --git a/apps/api/src/app/import/import.helper.ts b/apps/api/src/app/import/import.helper.ts
new file mode 100644
index 000000000..fb7895cb4
--- /dev/null
+++ b/apps/api/src/app/import/import.helper.ts
@@ -0,0 +1,34 @@
+import { getAssetProfileIdentifier } from '@ghostfolio/common/helper';
+import { Activity } from '@ghostfolio/common/interfaces';
+
+import { AssetProfileToCreate } from './interfaces/interfaces';
+
+/**
+ * Returns the asset profiles which at least one activity of the import uses.
+ * The asset profiles are created after the validation of the activities,
+ * thus an asset profile of an activity which is not imported must not be
+ * created.
+ */
+export function getAssetProfilesToCreate({
+  activities,
+  assetProfiles
+}: {
+  activities: Partial<Activity>[];
+  assetProfiles: AssetProfileToCreate[];
+}) {
+  const assetProfileIdentifiersToImport = new Set(
+    activities
+      .filter(({ error }) => {
+        return !error;
+      })
+      .map(({ assetProfile }) => {
+        return getAssetProfileIdentifier(assetProfile);
+      })
+  );
+
+  return assetProfiles.filter(({ assetProfile }) => {
+    return assetProfileIdentifiersToImport.has(
+      getAssetProfileIdentifier(assetProfile)
+    );
+  });
+}
diff --git a/apps/api/src/app/import/import.service.ts b/apps/api/src/app/import/import.service.ts
index 5d3574fbf..aa34b24e9 100644
--- a/apps/api/src/app/import/import.service.ts
+++ b/apps/api/src/app/import/import.service.ts
@@ -48,6 +48,8 @@ import { omit, uniqBy } from 'lodash';
 import { randomUUID } from 'node:crypto';
 
 import { ImportDataDto } from './import-data.dto';
+import { getAssetProfilesToCreate } from './import.helper';
+import { AssetProfileToCreate } from './interfaces/interfaces';
 
 @Injectable()
 export class ImportService {
@@ -534,10 +536,7 @@ export class ImportService {
       }
     }
 
-    const assetProfilesToCreate: {
-      assetProfile: Prisma.SymbolProfileCreateInput;
-      marketDataObjects: Prisma.MarketDataUpdateInput[];
-    }[] = [];
+    const assetProfilesToCreate: AssetProfileToCreate[] = [];
 
     if (assetProfilesWithMarketDataDto?.length) {
       const customAssetProfileNames = assetProfilesWithMarketDataDto
@@ -738,16 +737,18 @@ export class ImportService {
     // duplicate. An asset profile which is created before the validation of
     // the activities would stay behind, because the import is not rolled back
     // on an error.
-    for (const {
-      assetProfile,
-      marketDataObjects
-    } of this.getAssetProfilesToCreate({
-      activities: activitiesExtendedWithErrors,
-      assetProfiles: assetProfilesToCreate
-    })) {
-      await this.symbolProfileService.add(assetProfile);
-
-      await this.marketDataService.updateMany({ data: marketDataObjects });
+    if (!isDryRun) {
+      for (const {
+        assetProfile,
+        marketDataObjects
+      } of getAssetProfilesToCreate({
+        activities: activitiesExtendedWithErrors,
+        assetProfiles: assetProfilesToCreate
+      })) {
+        await this.symbolProfileService.add(assetProfile);
+
+        await this.marketDataService.updateMany({ data: marketDataObjects });
+      }
     }
 
     const activities: Activity[] = [];
@@ -1086,39 +1087,6 @@ export class ImportService {
     return matchingAccountsOfUser[0];
   }
 
-  /**
-   * Returns the asset profiles which at least one activity of the import uses.
-   * The asset profiles are created after the validation of the activities,
-   * thus an asset profile of an activity which is not imported must not be
-   * created.
-   */
-  private getAssetProfilesToCreate({
-    activities,
-    assetProfiles
-  }: {
-    activities: Partial<Activity>[];
-    assetProfiles: {
-      assetProfile: Prisma.SymbolProfileCreateInput;
-      marketDataObjects: Prisma.MarketDataUpdateInput[];
-    }[];
-  }) {
-    const assetProfileIdentifiersToImport = new Set(
-      activities
-        .filter(({ error }) => {
-          return !error;
-        })
-        .map(({ assetProfile }) => {
-          return getAssetProfileIdentifier(assetProfile);
-        })
-    );
-
-    return assetProfiles.filter(({ assetProfile }) => {
-      return assetProfileIdentifiersToImport.has(
-        getAssetProfileIdentifier(assetProfile)
-      );
-    });
-  }
-
   private isUniqueAccount(accounts: AccountWithValue[]) {
     const uniqueAccountIds = new Set<string>();
 
diff --git a/apps/api/src/app/import/interfaces/interfaces.ts b/apps/api/src/app/import/interfaces/interfaces.ts
new file mode 100644
index 000000000..2787b7eb1
--- /dev/null
+++ b/apps/api/src/app/import/interfaces/interfaces.ts
@@ -0,0 +1,6 @@
+import { Prisma } from '@prisma/client';
+
+export interface AssetProfileToCreate {
+  assetProfile: Prisma.SymbolProfileCreateInput;
+  marketDataObjects: Prisma.MarketDataUpdateInput[];
+}
diff --git a/apps/api/src/services/data-provider/data-provider.service.ts b/apps/api/src/services/data-provider/data-provider.service.ts
index 102b80d56..0912fd4f7 100644
--- a/apps/api/src/services/data-provider/data-provider.service.ts
+++ b/apps/api/src/services/data-provider/data-provider.service.ts
@@ -273,10 +273,10 @@ export class DataProviderService implements OnModuleInit {
 
       if (!assetProfiles[assetProfileIdentifier]) {
         const assetProfileInImport = assetProfilesWithMarketDataDto?.find(
-          (assetProfile) => {
+          (assetProfileWithMarketData) => {
             return (
-              assetProfile.dataSource === dataSource &&
-              assetProfile.symbol === symbol
+              assetProfileWithMarketData.dataSource === dataSource &&
+              assetProfileWithMarketData.symbol === symbol
             );
           }
         );