diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64a2e28c1..7e468015e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Improved the support for the `MANUAL` data source
 - Improved the _Activities_ tab icon
 - Upgraded `prisma` from version `4.4.0` to `4.6.1`
 - Upgraded `yahoo-finance2` from version `2.3.6` to `2.3.10`
diff --git a/apps/api/src/app/symbol/symbol.service.ts b/apps/api/src/app/symbol/symbol.service.ts
index e24aa71b2..0575cfda1 100644
--- a/apps/api/src/app/symbol/symbol.service.ts
+++ b/apps/api/src/app/symbol/symbol.service.ts
@@ -32,7 +32,7 @@ export class SymbolService {
     ]);
     const { currency, marketPrice } = quotes[dataGatheringItem.symbol] ?? {};
 
-    if (dataGatheringItem.dataSource && marketPrice) {
+    if (dataGatheringItem.dataSource && marketPrice >= 0) {
       let historicalData: HistoricalDataItem[] = [];
 
       if (includeHistoricalData > 0) {
diff --git a/apps/api/src/services/configuration.service.ts b/apps/api/src/services/configuration.service.ts
index 30e9d7c6f..75441c8c3 100644
--- a/apps/api/src/services/configuration.service.ts
+++ b/apps/api/src/services/configuration.service.ts
@@ -19,7 +19,7 @@ export class ConfigurationService {
       CACHE_TTL: num({ default: 1 }),
       DATA_SOURCE_PRIMARY: str({ default: DataSource.YAHOO }),
       DATA_SOURCES: json({
-        default: [DataSource.GHOSTFOLIO, DataSource.YAHOO]
+        default: [DataSource.GHOSTFOLIO, DataSource.MANUAL, DataSource.YAHOO]
       }),
       ENABLE_FEATURE_BLOG: bool({ default: false }),
       ENABLE_FEATURE_CUSTOM_SYMBOLS: bool({ default: false }),
diff --git a/apps/api/src/services/data-provider/manual/manual.service.ts b/apps/api/src/services/data-provider/manual/manual.service.ts
index edcdd2cde..a364276ef 100644
--- a/apps/api/src/services/data-provider/manual/manual.service.ts
+++ b/apps/api/src/services/data-provider/manual/manual.service.ts
@@ -4,13 +4,18 @@ import {
   IDataProviderHistoricalResponse,
   IDataProviderResponse
 } from '@ghostfolio/api/services/interfaces/interfaces';
+import { PrismaService } from '@ghostfolio/api/services/prisma.service';
+import { SymbolProfileService } from '@ghostfolio/api/services/symbol-profile.service';
 import { Granularity } from '@ghostfolio/common/types';
-import { Injectable } from '@nestjs/common';
+import { Injectable, Logger } from '@nestjs/common';
 import { DataSource, SymbolProfile } from '@prisma/client';
 
 @Injectable()
 export class ManualService implements DataProviderInterface {
-  public constructor() {}
+  public constructor(
+    private readonly prismaService: PrismaService,
+    private readonly symbolProfileService: SymbolProfileService
+  ) {}
 
   public canHandle(symbol: string) {
     return false;
@@ -42,10 +47,77 @@ export class ManualService implements DataProviderInterface {
   public async getQuotes(
     aSymbols: string[]
   ): Promise<{ [symbol: string]: IDataProviderResponse }> {
+    const response: { [symbol: string]: IDataProviderResponse } = {};
+
+    if (aSymbols.length <= 0) {
+      return response;
+    }
+
+    try {
+      const symbolProfiles =
+        await this.symbolProfileService.getSymbolProfilesBySymbols(aSymbols);
+
+      const marketData = await this.prismaService.marketData.findMany({
+        distinct: ['symbol'],
+        orderBy: {
+          date: 'desc'
+        },
+        take: aSymbols.length,
+        where: {
+          symbol: {
+            in: aSymbols
+          }
+        }
+      });
+
+      for (const symbolProfile of symbolProfiles) {
+        response[symbolProfile.symbol] = {
+          currency: symbolProfile.currency,
+          dataSource: this.getName(),
+          marketPrice:
+            marketData.find((marketDataItem) => {
+              return marketDataItem.symbol === symbolProfile.symbol;
+            })?.marketPrice ?? 0,
+          marketState: 'delayed'
+        };
+      }
+
+      return response;
+    } catch (error) {
+      Logger.error(error, 'ManualService');
+    }
+
     return {};
   }
 
   public async search(aQuery: string): Promise<{ items: LookupItem[] }> {
-    return { items: [] };
+    const items = await this.prismaService.symbolProfile.findMany({
+      select: {
+        currency: true,
+        dataSource: true,
+        name: true,
+        symbol: true
+      },
+      where: {
+        OR: [
+          {
+            dataSource: this.getName(),
+            name: {
+              mode: 'insensitive',
+              startsWith: aQuery
+            }
+          },
+          {
+            dataSource: this.getName(),
+            symbol: {
+              mode: 'insensitive',
+              startsWith: aQuery
+            }
+          }
+        ]
+      }
+    });
+
+    return { items };
   }
 }