Bugfix/handling of indices in FMP service (#7738)

* Improve handling of indices

* Update changelog

CHANGELOG.md

@@ -11,6 +11,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Consolidated the duplicated translations of the asset classes and asset sub classes
 
+### Fixed
+
+- Improved the handling of indices in the _Financial Modeling Prep_ service
+
 ## 3.62.0 - 2026-08-27
 
 ### Added

apps/api/src/services/data-provider/financial-modeling-prep/financial-modeling-prep.service.ts

@@ -142,9 +142,18 @@ export class FinancialModelingPrepService
           .then((res) => res.json());
 
         if (!assetProfile) {
-          throw new AssetProfileDelistedError(
-            `No data found, ${symbol} (${this.getName()}) may be delisted`
-          );
+          const indexProfile = await this.getIndexProfile({
+            requestTimeout,
+            symbol
+          });
+
+          if (!indexProfile) {
+            throw new AssetProfileDelistedError(
+              `No data found, ${symbol} (${this.getName()}) may be delisted`
+            );
+          }
+
+          return { ...response, ...indexProfile };
         }
 
         const { assetClass, assetSubClass } =
@@ -582,28 +591,17 @@ export class FinancialModelingPrepService
           };
         });
       } else {
-        const queryParams = new URLSearchParams({
-          query,
-          apikey: this.apiKey
-        });
-
         const [nameResults, symbolResults] = await Promise.all([
-          this.fetchService
-            .fetch(
-              `${this.getUrl({ version: 'stable' })}/search-name?${queryParams.toString()}`,
-              {
-                signal: AbortSignal.timeout(requestTimeout)
-              }
-            )
-            .then((res) => res.json()),
-          this.fetchService
-            .fetch(
-              `${this.getUrl({ version: 'stable' })}/search-symbol?${queryParams.toString()}`,
-              {
-                signal: AbortSignal.timeout(requestTimeout)
-              }
-            )
-            .then((res) => res.json())
+          this.getSearchResults({
+            query,
+            requestTimeout,
+            endpoint: 'search-name'
+          }),
+          this.getSearchResults({
+            query,
+            requestTimeout,
+            endpoint: 'search-symbol'
+          })
         ]);
 
         const result = uniqBy(
@@ -615,10 +613,9 @@ export class FinancialModelingPrepService
 
         items = result
           .filter(({ exchange, symbol }) => {
-            if (
-              exchange === 'FOREX' ||
-              (includeIndices === false && symbol.startsWith('^'))
-            ) {
+            const isIndex = exchange === 'INDEX' || symbol.startsWith('^');
+
+            if (exchange === 'FOREX' || (includeIndices === false && isIndex)) {
               return false;
             }
 
@@ -663,6 +660,61 @@ export class FinancialModelingPrepService
     return name;
   }
 
+  /**
+   * Financial Modeling Prep has no profile for an index, thus the currency and
+   * the name are taken from the search endpoint.
+   */
+  private async getIndexProfile({
+    requestTimeout,
+    symbol
+  }: {
+    requestTimeout: number;
+    symbol: string;
+  }): Promise<Pick<SymbolProfile, 'currency' | 'name'>> {
+    const results = await this.getSearchResults({
+      requestTimeout,
+      endpoint: 'search-symbol',
+      query: symbol
+    });
+
+    const index = results?.find(({ exchange, symbol: symbolOfResult }) => {
+      return exchange === 'INDEX' && symbolOfResult === symbol;
+    });
+
+    if (!index) {
+      return undefined;
+    }
+
+    return {
+      currency: index.currency,
+      name: this.formatName({ name: index.name })
+    };
+  }
+
+  private async getSearchResults({
+    endpoint,
+    query,
+    requestTimeout
+  }: {
+    endpoint: 'search-name' | 'search-symbol';
+    query: string;
+    requestTimeout: number;
+  }) {
+    const queryParams = new URLSearchParams({
+      query,
+      apikey: this.apiKey
+    });
+
+    return this.fetchService
+      .fetch(
+        `${this.getUrl({ version: 'stable' })}/${endpoint}?${queryParams.toString()}`,
+        {
+          signal: AbortSignal.timeout(requestTimeout)
+        }
+      )
+      .then((res) => res.json());
+  }
+
   private getUrl({ version }: { version: number | 'stable' }) {
     const baseUrl = 'https://financialmodelingprep.com';