diff --git a/FinlyticBackend/Controllers/CalendarController.cs b/FinlyticBackend/Controllers/CalendarController.cs
index d9e7a56..bbc0421 100644
--- a/FinlyticBackend/Controllers/CalendarController.cs
+++ b/FinlyticBackend/Controllers/CalendarController.cs
@@ -85,13 +85,12 @@ public class CalendarController : ControllerBase
                         }
 
                         return new CalendarEventResponseDto(
-                            Id: $"evt-{eventIsin}-{eventDate:yyyyMMdd}-{eventType}",
-                            Symbol: string.IsNullOrWhiteSpace(ticker) ? eventIsin : ticker,
+                            Id: e.Id.ToString(),
                             CompanyName: companyName,
                             EventType: eventType,
                             EventDate: eventDate,
                             Date: eventDate.ToString("o"),
-                            Isin: eventIsin,
+                            Isin: e.Isin,
                             Ticker: ticker,
                             Description: $"{eventType} - {companyName}",
                             Details: $"Termin für {companyName} am {eventDate:dd.MM.yyyy}",
@@ -119,9 +118,7 @@ public class CalendarController : ControllerBase
                     {
                         filtered = filtered.Where(e =>
                             string.Equals(e.Isin, activeSymbol, StringComparison.OrdinalIgnoreCase) ||
-                            string.Equals(e.Ticker, activeSymbol, StringComparison.OrdinalIgnoreCase) ||
-                            string.Equals(e.Symbol, activeSymbol, StringComparison.OrdinalIgnoreCase)
-                        );
+                            string.Equals(e.Ticker, activeSymbol, StringComparison.OrdinalIgnoreCase));
                     }
 
                     return Ok(filtered.OrderBy(e => e.EventDate).ToList());
diff --git a/FinlyticCore/Dtos/CalendarEventResponseDto.cs b/FinlyticCore/Dtos/CalendarEventResponseDto.cs
index b53eea5..9cbec00 100644
--- a/FinlyticCore/Dtos/CalendarEventResponseDto.cs
+++ b/FinlyticCore/Dtos/CalendarEventResponseDto.cs
@@ -8,7 +8,6 @@ namespace FinlyticCore.Dtos;
 /// </summary>
 public record CalendarEventResponseDto(
     [property: JsonPropertyName("id")] string Id,
-    [property: JsonPropertyName("symbol")] string Symbol,
     [property: JsonPropertyName("companyName")] string CompanyName,
     [property: JsonPropertyName("eventType")] string EventType,
     [property: JsonPropertyName("eventDate")] DateTime EventDate,
diff --git a/FinlyticFundamentals/Services/FundamentalsDbService.cs b/FinlyticFundamentals/Services/FundamentalsDbService.cs
index bdcbadd..5cb24c7 100644
--- a/FinlyticFundamentals/Services/FundamentalsDbService.cs
+++ b/FinlyticFundamentals/Services/FundamentalsDbService.cs
@@ -477,9 +477,11 @@ public class FundamentalsDbService : IFundamentalsDbService
         return events.Select(e => new CorporateEventDto
         {
             Id = e.Id,
+            Isin = e.AssetData.Isin,
             Ticker = e.Ticker != null
                 ? new TickerInfoDto { Ticker = e.Ticker.Ticker, Exchange = !string.IsNullOrWhiteSpace(e.Ticker.Exchange) ? e.Ticker.Exchange : GetExchangeDisplayName(e.Ticker.Ticker) }
                 : new TickerInfoDto { Ticker = "Unknown", Exchange = "Unknown" },
+            CompanyName = e.AssetData.Name,
             Type = e.Type,
             Date = e.Date
         }).OrderBy(e => e.Date).ToList();
@@ -504,6 +506,8 @@ public class FundamentalsDbService : IFundamentalsDbService
         return events.Select(e => new CorporateEventDto
         {
             Id = e.Id,
+            Isin = e.AssetData.Isin,
+            CompanyName = e.AssetData.Name,
             Ticker = e.Ticker != null
                 ? new TickerInfoDto { Ticker = e.Ticker.Ticker, Exchange = !string.IsNullOrWhiteSpace(e.Ticker.Exchange) ? e.Ticker.Exchange : GetExchangeDisplayName(e.Ticker.Ticker) }
                 : new TickerInfoDto { Ticker = "Unknown", Exchange = "Unknown" },