diff --git a/apps/client/src/app/components/admin-market-data-detail/admin-market-data-detail.component.ts b/apps/client/src/app/components/admin-market-data-detail/admin-market-data-detail.component.ts
index 5a2ec5265..b188674f4 100644
--- a/apps/client/src/app/components/admin-market-data-detail/admin-market-data-detail.component.ts
+++ b/apps/client/src/app/components/admin-market-data-detail/admin-market-data-detail.component.ts
@@ -155,7 +155,7 @@ export class AdminMarketDataDetailComponent implements OnChanges, OnInit {
     day: string;
     yearMonth: string;
   }) {
-    const date = parseISO(`${yearMonth}-${day}`);
+    const date = `${yearMonth}-${day}`;
     const marketPrice = this.marketDataByMonth[yearMonth]?.[day]?.marketPrice;
 
     const dialogRef = this.dialog.open(MarketDataDetailDialog, {
diff --git a/apps/client/src/app/components/admin-market-data-detail/market-data-detail-dialog/interfaces/interfaces.ts b/apps/client/src/app/components/admin-market-data-detail/market-data-detail-dialog/interfaces/interfaces.ts
index 8f5447f9c..a4baeb65c 100644
--- a/apps/client/src/app/components/admin-market-data-detail/market-data-detail-dialog/interfaces/interfaces.ts
+++ b/apps/client/src/app/components/admin-market-data-detail/market-data-detail-dialog/interfaces/interfaces.ts
@@ -5,7 +5,7 @@ import { DataSource } from '@prisma/client';
 export interface MarketDataDetailDialogParams {
   currency: string;
   dataSource: DataSource;
-  date: Date;
+  date: string;
   marketPrice: number;
   symbol: string;
   user: User;
diff --git a/apps/client/src/app/components/admin-market-data-detail/market-data-detail-dialog/market-data-detail-dialog.component.ts b/apps/client/src/app/components/admin-market-data-detail/market-data-detail-dialog/market-data-detail-dialog.component.ts
index df8ac6067..f1c3b3b44 100644
--- a/apps/client/src/app/components/admin-market-data-detail/market-data-detail-dialog/market-data-detail-dialog.component.ts
+++ b/apps/client/src/app/components/admin-market-data-detail/market-data-detail-dialog/market-data-detail-dialog.component.ts
@@ -63,7 +63,7 @@ export class MarketDataDetailDialog implements OnDestroy {
         marketData: {
           marketData: [
             {
-              date: this.data.date.toISOString(),
+              date: this.data.date,
               marketPrice: this.data.marketPrice
             }
           ]
diff --git a/apps/client/src/app/components/admin-market-data/asset-profile-dialog/asset-profile-dialog.component.ts b/apps/client/src/app/components/admin-market-data/asset-profile-dialog/asset-profile-dialog.component.ts
index f0e9abf43..9157476f0 100644
--- a/apps/client/src/app/components/admin-market-data/asset-profile-dialog/asset-profile-dialog.component.ts
+++ b/apps/client/src/app/components/admin-market-data/asset-profile-dialog/asset-profile-dialog.component.ts
@@ -1,4 +1,5 @@
 import { UpdateAssetProfileDto } from '@ghostfolio/api/app/admin/update-asset-profile.dto';
+import { UpdateMarketDataDto } from '@ghostfolio/api/app/admin/update-market-data.dto';
 import { AdminService } from '@ghostfolio/client/services/admin.service';
 import { DataService } from '@ghostfolio/client/services/data.service';
 import { DATE_FORMAT, parseDate } from '@ghostfolio/common/helper';
@@ -195,15 +196,13 @@ export class AssetProfileDialog implements OnDestroy, OnInit {
           header: true,
           skipEmptyLines: true
         }
-      ).data;
+      ).data as UpdateMarketDataDto[];
 
       this.adminService
         .postMarketData({
           dataSource: this.data.dataSource,
           marketData: {
-            marketData: marketData.map(({ date, marketPrice }) => {
-              return { marketPrice, date: parseDate(date).toISOString() };
-            })
+            marketData
           },
           symbol: this.data.symbol
         })
diff --git a/apps/client/src/app/services/admin.service.ts b/apps/client/src/app/services/admin.service.ts
index 7d204c607..ede16baa0 100644
--- a/apps/client/src/app/services/admin.service.ts
+++ b/apps/client/src/app/services/admin.service.ts
@@ -192,13 +192,10 @@ export class AdminService {
     symbol
   }: {
     dataSource: DataSource;
-    date: Date;
+    date: string;
     symbol: string;
   }) {
-    const url = `/api/v1/symbol/${dataSource}/${symbol}/${format(
-      date,
-      DATE_FORMAT
-    )}`;
+    const url = `/api/v1/symbol/${dataSource}/${symbol}/${date}`;
 
     return this.http.get<IDataProviderHistoricalResponse>(url);
   }