Fix duplicate ETF holdings with case-insensitive grouping

apps/client/src/app/pages/portfolio/allocations/allocations-page.component.ts

@@ -43,6 +43,11 @@ import {
 import { isNumber } from 'lodash';
 import { DeviceDetectorService } from 'ngx-device-detector';
 
+import {
+  isSameTopHoldingName,
+  normalizeTopHoldingName
+} from './top-holdings.util';
+
 @Component({
   imports: [
     GfPortfolioProportionChartComponent,
@@ -408,14 +413,17 @@ export class GfAllocationsPageComponent implements OnInit {
           for (const holding of position.holdings) {
             const { allocationInPercentage, name, valueInBaseCurrency } =
               holding;
+            const topHoldingKey = normalizeTopHoldingName(name);
 
-            if (this.topHoldingsMap[name]?.value) {
-              this.topHoldingsMap[name].value += isNumber(valueInBaseCurrency)
+            if (this.topHoldingsMap[topHoldingKey]?.value) {
+              this.topHoldingsMap[topHoldingKey].value += isNumber(
+                valueInBaseCurrency
+              )
                 ? valueInBaseCurrency
                 : allocationInPercentage *
                   this.portfolioDetails.holdings[symbol].valueInPercentage;
             } else {
-              this.topHoldingsMap[name] = {
+              this.topHoldingsMap[topHoldingKey] = {
                 name,
                 value: isNumber(valueInBaseCurrency)
                   ? valueInBaseCurrency
@@ -518,7 +526,7 @@ export class GfAllocationsPageComponent implements OnInit {
               if (holding.holdings.length > 0) {
                 const currentParentHolding = holding.holdings.find(
                   (parentHolding) => {
-                    return parentHolding.name === name;
+                    return isSameTopHoldingName(parentHolding.name, name);
                   }
                 );
 

apps/client/src/app/pages/portfolio/allocations/top-holdings.util.spec.ts

@@ -0,0 +1,40 @@
+import {
+  isSameTopHoldingName,
+  normalizeTopHoldingName
+} from './top-holdings.util';
+
+describe('Top Holdings Utility', () => {
+  it('normalizes top holding names case-insensitively', () => {
+    expect(normalizeTopHoldingName('NVIDIA Corp')).toEqual('nvidia corp');
+    expect(normalizeTopHoldingName('NVIDIA CORP')).toEqual('nvidia corp');
+  });
+
+  it('matches top holding names case-insensitively', () => {
+    expect(isSameTopHoldingName('NVIDIA Corp', 'NVIDIA CORP')).toBe(true);
+    expect(isSameTopHoldingName('Apple Inc', 'Microsoft Corp')).toBe(false);
+  });
+
+  it('supports aggregation of mixed-case holding names into one entry', () => {
+    const holdings = [
+      { name: 'NVIDIA Corp', valueInBaseCurrency: 50 },
+      { name: 'NVIDIA CORP', valueInBaseCurrency: 40 }
+    ];
+    const topHoldingsMap: Record<string, { name: string; value: number }> = {};
+
+    for (const { name, valueInBaseCurrency } of holdings) {
+      const topHoldingKey = normalizeTopHoldingName(name);
+
+      if (topHoldingsMap[topHoldingKey]) {
+        topHoldingsMap[topHoldingKey].value += valueInBaseCurrency;
+      } else {
+        topHoldingsMap[topHoldingKey] = {
+          name,
+          value: valueInBaseCurrency
+        };
+      }
+    }
+
+    expect(Object.values(topHoldingsMap)).toHaveLength(1);
+    expect(Object.values(topHoldingsMap)[0].value).toEqual(90);
+  });
+});

apps/client/src/app/pages/portfolio/allocations/top-holdings.util.ts

@@ -0,0 +1,7 @@
+export function normalizeTopHoldingName(name: string) {
+  return name.trim().toLocaleLowerCase();
+}
+
+export function isSameTopHoldingName(aName: string, bName: string) {
+  return normalizeTopHoldingName(aName) === normalizeTopHoldingName(bName);
+}