diff --git a/CHANGELOG.md b/CHANGELOG.md
index 843152af3..28bd529d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Added the missing currency suffix to the cash balance field in the create or update account dialog
+- Fixed the time in market display of the portfolio summary tab on the home page for the impersonation mode
 - Fixed the delete button in the asset profile details dialog of the admin control panel by providing the missing `watchedByCount` parameter
 
 ## 2.224.2 - 2025-12-20
diff --git a/apps/api/src/app/portfolio/portfolio.service.ts b/apps/api/src/app/portfolio/portfolio.service.ts
index 084c8f4ed..faabee79b 100644
--- a/apps/api/src/app/portfolio/portfolio.service.ts
+++ b/apps/api/src/app/portfolio/portfolio.service.ts
@@ -1954,6 +1954,7 @@ export class PortfolioService {
       }).length,
       committedFunds: committedFunds.toNumber(),
       currentValueInBaseCurrency: currentValueInBaseCurrency.toNumber(),
+      dateOfFirstActivity: firstOrderDate,
       dividendInBaseCurrency: dividendInBaseCurrency.toNumber(),
       emergencyFund: {
         assets: emergencyFundHoldingsValueInBaseCurrency,
diff --git a/apps/client/src/app/components/portfolio-summary/portfolio-summary.component.ts b/apps/client/src/app/components/portfolio-summary/portfolio-summary.component.ts
index 9e9bb13d3..78ccce1ed 100644
--- a/apps/client/src/app/components/portfolio-summary/portfolio-summary.component.ts
+++ b/apps/client/src/app/components/portfolio-summary/portfolio-summary.component.ts
@@ -84,10 +84,13 @@ export class GfPortfolioSummaryComponent implements OnChanges {
         this.precision = 0;
       }
 
-      if (this.user.dateOfFirstActivity) {
-        this.timeInMarket = formatDistanceToNow(this.user.dateOfFirstActivity, {
-          locale: getDateFnsLocale(this.language)
-        });
+      if (this.summary.dateOfFirstActivity) {
+        this.timeInMarket = formatDistanceToNow(
+          this.summary.dateOfFirstActivity,
+          {
+            locale: getDateFnsLocale(this.language)
+          }
+        );
       } else {
         this.timeInMarket = '-';
       }
diff --git a/apps/client/src/app/services/data.service.ts b/apps/client/src/app/services/data.service.ts
index 4c324fe03..31b0fef73 100644
--- a/apps/client/src/app/services/data.service.ts
+++ b/apps/client/src/app/services/data.service.ts
@@ -564,6 +564,12 @@ export class DataService {
             }
           }
 
+          if (response.summary?.dateOfFirstActivity) {
+            response.summary.dateOfFirstActivity = parseISO(
+              response.summary.dateOfFirstActivity
+            );
+          }
+
           return response;
         })
       );
diff --git a/libs/common/src/lib/interfaces/portfolio-summary.interface.ts b/libs/common/src/lib/interfaces/portfolio-summary.interface.ts
index f08eb61b8..ccf94dcf7 100644
--- a/libs/common/src/lib/interfaces/portfolio-summary.interface.ts
+++ b/libs/common/src/lib/interfaces/portfolio-summary.interface.ts
@@ -7,6 +7,7 @@ export interface PortfolioSummary extends PortfolioPerformance {
   annualizedPerformancePercentWithCurrencyEffect: number;
   cash: number;
   committedFunds: number;
+  dateOfFirstActivity: Date;
   dividendInBaseCurrency: number;
   emergencyFund: {
     assets: number;