diff --git a/src/KArtSell.Host/Jobs/HistoricalBatchShadowRunJob.cs b/src/KArtSell.Host/Jobs/HistoricalBatchShadowRunJob.cs
index 8c13a1bc..f6054438 100644
--- a/src/KArtSell.Host/Jobs/HistoricalBatchShadowRunJob.cs
+++ b/src/KArtSell.Host/Jobs/HistoricalBatchShadowRunJob.cs
@@ -36,10 +36,10 @@ public sealed class HistoricalBatchShadowRunJob(
     /// </summary>
     [Queue("q-research")]
     [DisableConcurrentExecution(timeoutInSeconds: 300)]  // 5 min to queue; job itself has 30 min
-    public async Task ExecuteAsync(Guid? modelId = null, CancellationToken cancellationToken = default)
+    public async Task ExecuteAsync(CancellationToken cancellationToken = default)
     {
-        // Use provided modelId or default to all-models sentinel
-        var targetModelId = modelId ?? Guid.Empty;
+        // Use all-models sentinel for batch
+        var targetModelId = Guid.Empty;
 
         // Calculate 1-year window: 252 trading days ≈ 365 calendar days
         var endDate = DateOnly.FromDateTime(clock.UtcNow.Date);
diff --git a/src/KArtSell.Host/Program.cs b/src/KArtSell.Host/Program.cs
index e1a1a190..bdc85d5e 100644
--- a/src/KArtSell.Host/Program.cs
+++ b/src/KArtSell.Host/Program.cs
@@ -103,6 +103,7 @@ builder.Services.AddScoped<RecommendationReportGenerator>();
 builder.Services.AddScoped<GenerateDailyRecommendationJob>();
 builder.Services.AddScoped<GenerateWeeklyRecommendationJob>();
 builder.Services.AddScoped<GenerateMonthlyRecommendationJob>();
+builder.Services.AddScoped<HistoricalBatchShadowRunJob>();
 
 // OpenDart Services
 builder.Services.AddScoped<OpenDartService>();
@@ -395,7 +396,7 @@ else
 
 // Register other Hangfire jobs
 var kstTimeZone = TimeZoneInfo.FindSystemTimeZoneById("Asia/Seoul");
-try { RecurringJob.AddOrUpdate<HistoricalBatchShadowRunJob>("historical-batch-shadow-run", job => job.ExecuteAsync(null, CancellationToken.None), "0 21 * * *", new RecurringJobOptions { TimeZone = kstTimeZone }); logger.LogInformation("✅ historical-batch-shadow-run registered (daily 21:00 KST)"); } catch (Exception ex) { logger.LogWarning(ex, "⚠️ historical-batch-shadow-run error"); }
+try { RecurringJob.AddOrUpdate<HistoricalBatchShadowRunJob>("historical-batch-shadow-run", job => job.ExecuteAsync(CancellationToken.None), "0 21 * * *", new RecurringJobOptions { TimeZone = kstTimeZone }); logger.LogInformation("✅ historical-batch-shadow-run registered (daily 21:00 KST)"); } catch (Exception ex) { logger.LogWarning(ex, "⚠️ historical-batch-shadow-run error"); }
 try { RecurringJob.AddOrUpdate<OpenDartDailyBatchJob>("opendart-daily-batch", job => job.ExecuteAsync(CancellationToken.None), "0 9 * * *", new RecurringJobOptions { TimeZone = kstTimeZone }); logger.LogInformation("✅ opendart-daily-batch registered"); } catch (Exception ex) { logger.LogWarning(ex, "⚠️ opendart-daily-batch error"); }
 try { RecurringJob.AddOrUpdate<GenerateDailyRecommendationJob>("daily-recommendation", job => job.ExecuteAsync(CancellationToken.None), "0 9 * * *", new RecurringJobOptions { TimeZone = kstTimeZone }); logger.LogInformation("✅ daily-recommendation registered"); } catch (Exception ex) { logger.LogWarning(ex, "⚠️ daily-recommendation error"); }
 try { RecurringJob.AddOrUpdate<GenerateWeeklyRecommendationJob>("weekly-recommendation", job => job.ExecuteAsync(CancellationToken.None), "0 9 * * 6", new RecurringJobOptions { TimeZone = kstTimeZone }); logger.LogInformation("✅ weekly-recommendation registered"); } catch (Exception ex) { logger.LogWarning(ex, "⚠️ weekly-recommendation error"); }