diff --git a/apps/api/src/models/interfaces/portfolio.interface.ts b/apps/api/src/models/interfaces/portfolio.interface.ts
deleted file mode 100644
index b369202c..00000000
--- a/apps/api/src/models/interfaces/portfolio.interface.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-import { PortfolioItem, Position } from '@ghostfolio/common/interfaces';
-
-import { Order } from '../order';
-
-export interface PortfolioInterface {
-  get(aDate?: Date): PortfolioItem[];
-
-  getFees(): number;
-
-  getPositions(aDate: Date): {
-    [symbol: string]: Position;
-  };
-
-  getSymbols(aDate?: Date): string[];
-
-  getTotalBuy(): number;
-
-  getTotalSell(): number;
-
-  getOrders(): Order[];
-
-  getValue(aDate?: Date): number;
-}
diff --git a/libs/common/src/lib/interfaces/index.ts b/libs/common/src/lib/interfaces/index.ts
index bdf982f5..e401705f 100644
--- a/libs/common/src/lib/interfaces/index.ts
+++ b/libs/common/src/lib/interfaces/index.ts
@@ -29,8 +29,6 @@ import type { PortfolioChart } from './portfolio-chart.interface';
 import type { PortfolioDetails } from './portfolio-details.interface';
 import type { PortfolioDividends } from './portfolio-dividends.interface';
 import type { PortfolioInvestments } from './portfolio-investments.interface';
-import type { PortfolioItem } from './portfolio-item.interface';
-import type { PortfolioOverview } from './portfolio-overview.interface';
 import type { PortfolioPerformance } from './portfolio-performance.interface';
 import type { PortfolioPosition } from './portfolio-position.interface';
 import type { PortfolioReportRule } from './portfolio-report-rule.interface';
@@ -116,8 +114,6 @@ export {
   PortfolioHoldingResponse,
   PortfolioHoldingsResponse,
   PortfolioInvestments,
-  PortfolioItem,
-  PortfolioOverview,
   PortfolioPerformance,
   PortfolioPerformanceResponse,
   PortfolioPosition,
diff --git a/libs/common/src/lib/interfaces/portfolio-item.interface.ts b/libs/common/src/lib/interfaces/portfolio-item.interface.ts
deleted file mode 100644
index a3e42a05..00000000
--- a/libs/common/src/lib/interfaces/portfolio-item.interface.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { Position } from '@ghostfolio/common/interfaces';
-
-export interface PortfolioItem {
-  date: string;
-  grossPerformancePercent: number;
-  investment: number;
-  positions: { [symbol: string]: Position };
-  value: number;
-}
diff --git a/libs/common/src/lib/interfaces/portfolio-overview.interface.ts b/libs/common/src/lib/interfaces/portfolio-overview.interface.ts
deleted file mode 100644
index c9c20c28..00000000
--- a/libs/common/src/lib/interfaces/portfolio-overview.interface.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-export interface PortfolioOverview {
-  cash: number;
-  committedFunds: number;
-  fees: number;
-  ordersCount: number;
-  totalBuy: number;
-  totalSell: number;
-}