From c88592ec53d85fd741739c47419537b2747e9842 Mon Sep 17 00:00:00 2001
From: Thomas Kaul <4159106+dtslvr@users.noreply.github.com>
Date: Tue, 6 Oct 2026 16:00:01 +0200
Subject: [PATCH] Include dividend of holdings without average investment in
 dividend percentage

---
 .../calculator/portfolio-calculator.ts        | 14 ++-----
 ...-calculator-googl-fee-and-dividend.spec.ts | 12 +++---
 .../calculator/roai/portfolio-calculator.ts   | 38 ++-----------------
 3 files changed, 13 insertions(+), 51 deletions(-)

diff --git a/apps/api/src/app/portfolio/calculator/portfolio-calculator.ts b/apps/api/src/app/portfolio/calculator/portfolio-calculator.ts
index a03e318c93..9b94545fd8 100644
--- a/apps/api/src/app/portfolio/calculator/portfolio-calculator.ts
+++ b/apps/api/src/app/portfolio/calculator/portfolio-calculator.ts
@@ -223,19 +223,15 @@ export abstract class PortfolioCalculator {
   ): PortfolioSnapshot;
 
   protected abstract calculatePerformancePercentages({
-    accumulatedValuesByDate,
-    holdings
+    accumulatedValuesByDate
   }: {
     accumulatedValuesByDate: { [date: string]: AccumulatedValues };
-    holdings: PortfolioSnapshotHolding[];
   }): { [date: string]: PerformancePercentages };
 
   protected abstract calculatePerformancePercentagesForDateRange({
-    historicalDataItems,
-    holdings
+    historicalDataItems
   }: {
     historicalDataItems: HistoricalDataItem[];
-    holdings: PortfolioSnapshotHolding[];
   }): { [date: string]: PerformancePercentages };
 
   @LogPerformance
@@ -680,8 +676,7 @@ export abstract class PortfolioCalculator {
       });
 
     const performancePercentagesByDate = this.calculatePerformancePercentages({
-      accumulatedValuesByDate,
-      holdings: positionsIncludedInHoldings
+      accumulatedValuesByDate
     });
 
     const historicalData: HistoricalDataItem[] = Object.entries(
@@ -1443,8 +1438,7 @@ export abstract class PortfolioCalculator {
 
     const performancePercentagesByDate =
       this.calculatePerformancePercentagesForDateRange({
-        historicalDataItems: historicalDataItemsOfDateRange,
-        holdings: this.snapshot.positions
+        historicalDataItems: historicalDataItemsOfDateRange
       });
 
     const chart = historicalDataItemsOfDateRange.map((historicalDataItem) => {
diff --git a/apps/api/src/app/portfolio/calculator/roai/portfolio-calculator-googl-fee-and-dividend.spec.ts b/apps/api/src/app/portfolio/calculator/roai/portfolio-calculator-googl-fee-and-dividend.spec.ts
index bdf5105ad5..18929a680c 100644
--- a/apps/api/src/app/portfolio/calculator/roai/portfolio-calculator-googl-fee-and-dividend.spec.ts
+++ b/apps/api/src/app/portfolio/calculator/roai/portfolio-calculator-googl-fee-and-dividend.spec.ts
@@ -234,8 +234,8 @@ describe('PortfolioCalculator', () => {
           unitPriceInAssetProfileCurrency: 0.62
         },
         {
-          // The holding has a dividend, but no average investment. Thus the
-          // dividend percentage stays 0, like the dividend yield
+          // The holding has a dividend, but no average investment. Its dividend
+          // is part of the net performance, and thus of the dividend percentage
           ...activityDummyData,
           assetProfile: {
             ...assetProfileDummyData,
@@ -274,7 +274,7 @@ describe('PortfolioCalculator', () => {
 
       expect(portfolioSnapshot.historicalData.at(-1)).toMatchObject({
         dividendInBaseCurrency: 5.62,
-        dividendInPercentageWithCurrencyEffect: 0,
+        dividendInPercentageWithCurrencyEffect: 0.01882242615044544,
         netPerformance: 19.87,
         netPerformanceInPercentage: 0.06654832875611226
       });
@@ -282,7 +282,7 @@ describe('PortfolioCalculator', () => {
       expect(performanceByDateRange).toMatchObject({
         max: {
           dividendInBaseCurrency: 5.62,
-          dividendInPercentageWithCurrencyEffect: 0,
+          dividendInPercentageWithCurrencyEffect: 0.01882242615044535,
           netPerformance: 19.87,
           netPerformanceInPercentage: 0.06654832875611194
         }
@@ -365,7 +365,7 @@ describe('PortfolioCalculator', () => {
 
       expect(portfolioSnapshot.historicalData.at(-1)).toMatchObject({
         dividendInBaseCurrency: 0.62,
-        dividendInPercentageWithCurrencyEffect: 0,
+        dividendInPercentageWithCurrencyEffect: 0.0020764954116149776,
         netPerformance: 14.87,
         netPerformanceInPercentage: 0.0498023980172818
       });
@@ -373,7 +373,7 @@ describe('PortfolioCalculator', () => {
       expect(performanceByDateRange).toMatchObject({
         max: {
           dividendInBaseCurrency: 0.62,
-          dividendInPercentageWithCurrencyEffect: 0,
+          dividendInPercentageWithCurrencyEffect: 0.002076495411614967,
           netPerformance: 14.87,
           netPerformanceInPercentage: 0.049802398017281556
         }
diff --git a/apps/api/src/app/portfolio/calculator/roai/portfolio-calculator.ts b/apps/api/src/app/portfolio/calculator/roai/portfolio-calculator.ts
index c0261d4e22..33b9ec68d9 100644
--- a/apps/api/src/app/portfolio/calculator/roai/portfolio-calculator.ts
+++ b/apps/api/src/app/portfolio/calculator/roai/portfolio-calculator.ts
@@ -17,10 +17,7 @@ import {
   AssetProfileIdentifier,
   HistoricalDataItem
 } from '@ghostfolio/common/interfaces';
-import {
-  PortfolioSnapshot,
-  PortfolioSnapshotHolding
-} from '@ghostfolio/common/models';
+import { PortfolioSnapshot } from '@ghostfolio/common/models';
 import { DateRange } from '@ghostfolio/common/types';
 import { PerformanceCalculationType } from '@ghostfolio/common/types/performance-calculation-type.type';
 
@@ -168,15 +165,10 @@ export class RoaiPortfolioCalculator extends PortfolioCalculator {
   }
 
   protected calculatePerformancePercentages({
-    accumulatedValuesByDate,
-    holdings
+    accumulatedValuesByDate
   }: {
     accumulatedValuesByDate: { [date: string]: AccumulatedValues };
-    holdings: PortfolioSnapshotHolding[];
   }): { [date: string]: PerformancePercentages } {
-    const hasDividendWithoutAverageInvestment =
-      this.hasDividendWithoutAverageInvestment(holdings);
-
     const performancePercentagesByDate: {
       [date: string]: PerformancePercentages;
     } = {};
@@ -193,7 +185,6 @@ export class RoaiPortfolioCalculator extends PortfolioCalculator {
     ] of Object.entries(accumulatedValuesByDate)) {
       performancePercentagesByDate[date] = {
         dividendInPercentageWithCurrencyEffect:
-          hasDividendWithoutAverageInvestment ||
           totalAverageInvestmentValueWithCurrencyEffect.eq(0)
             ? 0
             : totalDividendValueWithCurrencyEffect
@@ -217,15 +208,10 @@ export class RoaiPortfolioCalculator extends PortfolioCalculator {
   }
 
   protected calculatePerformancePercentagesForDateRange({
-    historicalDataItems,
-    holdings
+    historicalDataItems
   }: {
     historicalDataItems: HistoricalDataItem[];
-    holdings: PortfolioSnapshotHolding[];
   }): { [date: string]: PerformancePercentages } {
-    const hasDividendWithoutAverageInvestment =
-      this.hasDividendWithoutAverageInvestment(holdings);
-
     const averageInvestmentValues: number[] = [];
     const averageInvestmentValuesWithCurrencyEffect: number[] = [];
     let grossPerformanceAtStartDate: number;
@@ -276,7 +262,6 @@ export class RoaiPortfolioCalculator extends PortfolioCalculator {
 
       performancePercentagesByDate[historicalDataItem.date] = {
         dividendInPercentageWithCurrencyEffect:
-          !hasDividendWithoutAverageInvestment &&
           averageInvestmentValueWithCurrencyEffect > 0
             ? historicalDataItem.dividendInBaseCurrency /
               averageInvestmentValueWithCurrencyEffect
@@ -770,21 +755,4 @@ export class RoaiPortfolioCalculator extends PortfolioCalculator {
   protected getPerformanceCalculationType() {
     return PerformanceCalculationType.ROAI;
   }
-
-  private hasDividendWithoutAverageInvestment(
-    holdings: PortfolioSnapshotHolding[]
-  ) {
-    // A holding with a dividend only (without a buy activity), and a holding
-    // without a market price, gives a dividend but no average investment.
-    // Such a holding makes the dividend percentage too high. Therefore the
-    // dividend percentage stays 0 in this case, like the dividend yield.
-    return holdings.some(
-      ({ averageInvestmentWithCurrencyEffect, dividendInBaseCurrency }) => {
-        return (
-          !dividendInBaseCurrency.eq(0) &&
-          averageInvestmentWithCurrencyEffect.eq(0)
-        );
-      }
-    );
-  }
 }