diff --git a/src/PolyTrader.Modules.CopyTrading/CopyTradingModule.cs b/src/PolyTrader.Modules.CopyTrading/CopyTradingModule.cs
index 5155931..35a21a2 100644
--- a/src/PolyTrader.Modules.CopyTrading/CopyTradingModule.cs
+++ b/src/PolyTrader.Modules.CopyTrading/CopyTradingModule.cs
@@ -56,54 +56,20 @@ namespace PolyTrader.Modules.CopyTrading
 
         public void RegisterUi(IModuleUiHost host, IServiceProvider services)
         {
+            // EIN Fenster fürs ganze Modul: die einzelnen Ansichten sind Tabs im
+            // CopyTradingMainForm (Master-Trader / geschlossene Trades / Account-Einstellungen).
+            // So bleibt der Launcher schlank – ein Button je Modul statt je View.
             host.RegisterView(new ModuleView
             {
-                Id = "copytrading.masters",
-                Title = "Master-Trader",
+                Id = "copytrading.main",
+                Title = "Copytrading",
                 Group = "CopyTrading",
                 Order = 100,
                 CreateForm = () =>
                 {
-                    var view = new MasterTradersView();
-                    view.Initialize(
-                        services.GetRequiredService<ITrackedTraderRepository>(),
-                        services.GetRequiredService<TradingState>(),
-                        services.GetRequiredService<CopyTradingState>());
-                    return view;
-                }
-            });
-
-            host.RegisterView(new ModuleView
-            {
-                Id = "copytrading.closedtrades",
-                Title = "Geschlossene Copytrades",
-                Group = "CopyTrading",
-                Order = 110,
-                CreateForm = () =>
-                {
-                    var view = new ClosedTradesView();
-                    view.Initialize(
-                        services.GetRequiredService<ICopyTradeLogRepository>(),
-                        services.GetRequiredService<TradingState>(),
-                        services.GetRequiredService<CopyTradingState>());
-                    return view;
-                }
-            });
-
-            host.RegisterView(new ModuleView
-            {
-                Id = "copytrading.accountsettings",
-                Title = "Copytrading-Account-Einstellungen",
-                Group = "CopyTrading",
-                Order = 120,
-                CreateForm = () =>
-                {
-                    var view = new AccountSettingsView();
-                    view.Initialize(
-                        services.GetRequiredService<ICopyTradingAccountSettingsRepository>(),
-                        services.GetRequiredService<TradingState>(),
-                        services.GetRequiredService<CopyTradingState>());
-                    return view;
+                    var form = new CopyTradingMainForm();
+                    form.Initialize(services);
+                    return form;
                 }
             });
         }
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.Designer.cs b/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.Designer.cs
index e33b928..d7ac45d 100644
--- a/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.Designer.cs
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.Designer.cs
@@ -17,102 +17,108 @@ namespace PolyTrader.Modules.CopyTrading.Ui
 
         private void InitializeComponent()
         {
-            this.pnlTop = new System.Windows.Forms.Panel();
-            this.cmbAccounts = new System.Windows.Forms.ComboBox();
-            this.lblAccount = new System.Windows.Forms.Label();
-            this.pgSettings = new System.Windows.Forms.PropertyGrid();
-            this.pnlBottom = new System.Windows.Forms.Panel();
-            this.lblHint = new System.Windows.Forms.Label();
-            this.btnSave = new System.Windows.Forms.Button();
-            this.pnlTop.SuspendLayout();
-            this.pnlBottom.SuspendLayout();
-            this.SuspendLayout();
-            //
+            pnlTop = new Panel();
+            cmbAccounts = new ComboBox();
+            lblAccount = new Label();
+            pgSettings = new PropertyGrid();
+            pnlBottom = new Panel();
+            lblHint = new Label();
+            btnSave = new Button();
+            pnlTop.SuspendLayout();
+            pnlBottom.SuspendLayout();
+            SuspendLayout();
+            // 
             // pnlTop
-            //
-            this.pnlTop.Controls.Add(this.cmbAccounts);
-            this.pnlTop.Controls.Add(this.lblAccount);
-            this.pnlTop.Dock = System.Windows.Forms.DockStyle.Top;
-            this.pnlTop.Location = new System.Drawing.Point(0, 0);
-            this.pnlTop.Name = "pnlTop";
-            this.pnlTop.Padding = new System.Windows.Forms.Padding(8, 8, 8, 6);
-            this.pnlTop.Size = new System.Drawing.Size(560, 44);
-            this.pnlTop.TabIndex = 0;
-            //
+            // 
+            pnlTop.Controls.Add(cmbAccounts);
+            pnlTop.Controls.Add(lblAccount);
+            pnlTop.Dock = DockStyle.Top;
+            pnlTop.Location = new Point(0, 0);
+            pnlTop.Margin = new Padding(4, 5, 4, 5);
+            pnlTop.Name = "pnlTop";
+            pnlTop.Padding = new Padding(11, 13, 11, 10);
+            pnlTop.Size = new Size(800, 73);
+            pnlTop.TabIndex = 0;
+            // 
             // cmbAccounts
-            //
-            this.cmbAccounts.Dock = System.Windows.Forms.DockStyle.Fill;
-            this.cmbAccounts.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
-            this.cmbAccounts.Location = new System.Drawing.Point(68, 8);
-            this.cmbAccounts.Name = "cmbAccounts";
-            this.cmbAccounts.Size = new System.Drawing.Size(484, 23);
-            this.cmbAccounts.TabIndex = 1;
-            //
+            // 
+            cmbAccounts.Dock = DockStyle.Fill;
+            cmbAccounts.DropDownStyle = ComboBoxStyle.DropDownList;
+            cmbAccounts.Location = new Point(97, 13);
+            cmbAccounts.Margin = new Padding(4, 5, 4, 5);
+            cmbAccounts.Name = "cmbAccounts";
+            cmbAccounts.Size = new Size(692, 33);
+            cmbAccounts.TabIndex = 1;
+            // 
             // lblAccount
-            //
-            this.lblAccount.Dock = System.Windows.Forms.DockStyle.Left;
-            this.lblAccount.Location = new System.Drawing.Point(8, 8);
-            this.lblAccount.Name = "lblAccount";
-            this.lblAccount.Size = new System.Drawing.Size(60, 30);
-            this.lblAccount.TabIndex = 0;
-            this.lblAccount.Text = "Account:";
-            this.lblAccount.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
-            //
+            // 
+            lblAccount.Dock = DockStyle.Left;
+            lblAccount.Location = new Point(11, 13);
+            lblAccount.Margin = new Padding(4, 0, 4, 0);
+            lblAccount.Name = "lblAccount";
+            lblAccount.Size = new Size(86, 50);
+            lblAccount.TabIndex = 0;
+            lblAccount.Text = "Account:";
+            lblAccount.TextAlign = ContentAlignment.MiddleLeft;
+            // 
             // pgSettings
-            //
-            this.pgSettings.Dock = System.Windows.Forms.DockStyle.Fill;
-            this.pgSettings.Location = new System.Drawing.Point(0, 44);
-            this.pgSettings.Name = "pgSettings";
-            this.pgSettings.PropertySort = System.Windows.Forms.PropertySort.Categorized;
-            this.pgSettings.Size = new System.Drawing.Size(560, 508);
-            this.pgSettings.TabIndex = 1;
-            this.pgSettings.ToolbarVisible = false;
-            //
+            // 
+            pgSettings.Dock = DockStyle.Fill;
+            pgSettings.Location = new Point(0, 73);
+            pgSettings.Margin = new Padding(4, 5, 4, 5);
+            pgSettings.Name = "pgSettings";
+            pgSettings.PropertySort = PropertySort.Categorized;
+            pgSettings.Size = new Size(800, 847);
+            pgSettings.TabIndex = 1;
+            pgSettings.ToolbarVisible = false;
+            // 
             // pnlBottom
-            //
-            this.pnlBottom.Controls.Add(this.lblHint);
-            this.pnlBottom.Controls.Add(this.btnSave);
-            this.pnlBottom.Dock = System.Windows.Forms.DockStyle.Bottom;
-            this.pnlBottom.Location = new System.Drawing.Point(0, 552);
-            this.pnlBottom.Name = "pnlBottom";
-            this.pnlBottom.Padding = new System.Windows.Forms.Padding(8);
-            this.pnlBottom.Size = new System.Drawing.Size(560, 48);
-            this.pnlBottom.TabIndex = 2;
-            //
+            // 
+            pnlBottom.Controls.Add(lblHint);
+            pnlBottom.Controls.Add(btnSave);
+            pnlBottom.Dock = DockStyle.Bottom;
+            pnlBottom.Location = new Point(0, 920);
+            pnlBottom.Margin = new Padding(4, 5, 4, 5);
+            pnlBottom.Name = "pnlBottom";
+            pnlBottom.Padding = new Padding(11, 13, 11, 13);
+            pnlBottom.Size = new Size(800, 80);
+            pnlBottom.TabIndex = 2;
+            // 
             // lblHint
-            //
-            this.lblHint.Dock = System.Windows.Forms.DockStyle.Fill;
-            this.lblHint.ForeColor = System.Drawing.Color.DimGray;
-            this.lblHint.Location = new System.Drawing.Point(8, 8);
-            this.lblHint.Name = "lblHint";
-            this.lblHint.Size = new System.Drawing.Size(424, 32);
-            this.lblHint.TabIndex = 1;
-            this.lblHint.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
-            //
+            // 
+            lblHint.Dock = DockStyle.Fill;
+            lblHint.ForeColor = Color.DimGray;
+            lblHint.Location = new Point(11, 13);
+            lblHint.Margin = new Padding(4, 0, 4, 0);
+            lblHint.Name = "lblHint";
+            lblHint.Size = new Size(607, 54);
+            lblHint.TabIndex = 1;
+            lblHint.TextAlign = ContentAlignment.MiddleLeft;
+            // 
             // btnSave
-            //
-            this.btnSave.Dock = System.Windows.Forms.DockStyle.Right;
-            this.btnSave.Location = new System.Drawing.Point(432, 8);
-            this.btnSave.Name = "btnSave";
-            this.btnSave.Size = new System.Drawing.Size(120, 32);
-            this.btnSave.TabIndex = 0;
-            this.btnSave.Text = "Speichern";
-            this.btnSave.UseVisualStyleBackColor = true;
-            //
+            // 
+            btnSave.Dock = DockStyle.Right;
+            btnSave.Location = new Point(618, 13);
+            btnSave.Margin = new Padding(4, 5, 4, 5);
+            btnSave.Name = "btnSave";
+            btnSave.Size = new Size(171, 54);
+            btnSave.TabIndex = 0;
+            btnSave.Text = "Speichern";
+            btnSave.UseVisualStyleBackColor = true;
+            // 
             // AccountSettingsView
-            //
-            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
-            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(560, 600);
-            this.Controls.Add(this.pgSettings);
-            this.Controls.Add(this.pnlBottom);
-            this.Controls.Add(this.pnlTop);
-            this.MinimumSize = new System.Drawing.Size(420, 400);
-            this.Name = "AccountSettingsView";
-            this.Text = "Copytrading-Account-Einstellungen";
-            this.pnlTop.ResumeLayout(false);
-            this.pnlBottom.ResumeLayout(false);
-            this.ResumeLayout(false);
+            // 
+            AutoScaleDimensions = new SizeF(10F, 25F);
+            AutoScaleMode = AutoScaleMode.Font;
+            Controls.Add(pgSettings);
+            Controls.Add(pnlBottom);
+            Controls.Add(pnlTop);
+            Margin = new Padding(4, 5, 4, 5);
+            Name = "AccountSettingsView";
+            Size = new Size(800, 1000);
+            pnlTop.ResumeLayout(false);
+            pnlBottom.ResumeLayout(false);
+            ResumeLayout(false);
         }
 
         #endregion
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.cs b/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.cs
index 8b87c80..13e8dae 100644
--- a/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.cs
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.cs
@@ -13,7 +13,7 @@ namespace PolyTrader.Modules.CopyTrading.Ui
     /// das Repo und aktualisiert den Hot-Path-State (<see cref="CopyTradingState.AccountSettings"/>).
     /// Layout im Designer (AccountSettingsView.Designer.cs), Daten/Logik hier.
     /// </summary>
-    public partial class AccountSettingsView : Form
+    public partial class AccountSettingsView : UserControl
     {
         private ICopyTradingAccountSettingsRepository? _repo;
         private TradingState? _state;
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.resx b/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.resx
index 1af7de1..8b2ff64 100644
--- a/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.resx
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/AccountSettingsView.resx
@@ -1,17 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
 <root>
-  <!-- 
-    Microsoft ResX Schema 
-    
+  <!--
+    Microsoft ResX Schema
+
     Version 2.0
-    
-    The primary goals of this format is to allow a simple XML format 
-    that is mostly human readable. The generation and parsing of the 
-    various data types are done through the TypeConverter classes 
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
     associated with the data types.
-    
+
     Example:
-    
+
     ... ado.net/XML headers & schema ...
     <resheader name="resmimetype">text/microsoft-resx</resheader>
     <resheader name="version">2.0</resheader>
@@ -26,36 +26,36 @@
         <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
         <comment>This is a comment</comment>
     </data>
-                
-    There are any number of "resheader" rows that contain simple 
+
+    There are any number of "resheader" rows that contain simple
     name/value pairs.
-    
-    Each data row contains a name, and value. The row also contains a 
-    type or mimetype. Type corresponds to a .NET class that support 
-    text/value conversion through the TypeConverter architecture. 
-    Classes that don't support this are serialized and stored with the 
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
     mimetype set.
-    
-    The mimetype is used for serialized objects, and tells the 
-    ResXResourceReader how to depersist the object. This is currently not 
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
     extensible. For a given mimetype the value must be set accordingly:
-    
-    Note - application/x-microsoft.net.object.binary.base64 is the format 
-    that the ResXResourceWriter will generate, however the reader can 
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
     read any of the formats listed below.
-    
+
     mimetype: application/x-microsoft.net.object.binary.base64
-    value   : The object must be serialized with 
+    value   : The object must be serialized with
             : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
             : and then encoded with base64 encoding.
-    
+
     mimetype: application/x-microsoft.net.object.soap.base64
-    value   : The object must be serialized with 
+    value   : The object must be serialized with
             : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
             : and then encoded with base64 encoding.
 
     mimetype: application/x-microsoft.net.object.bytearray.base64
-    value   : The object must be serialized into a byte array 
+    value   : The object must be serialized into a byte array
             : using a System.ComponentModel.TypeConverter
             : and then encoded with base64 encoding.
     -->
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/ClosedTradesView.Designer.cs b/src/PolyTrader.Modules.CopyTrading/Ui/ClosedTradesView.Designer.cs
index 6d4cd88..6f1d5d7 100644
--- a/src/PolyTrader.Modules.CopyTrading/Ui/ClosedTradesView.Designer.cs
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/ClosedTradesView.Designer.cs
@@ -203,12 +203,10 @@ namespace PolyTrader.Modules.CopyTrading.Ui
             //
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(1100, 600);
             this.Controls.Add(this.dgvTrades);
             this.Controls.Add(this.pnlTop);
-            this.MinimumSize = new System.Drawing.Size(700, 400);
             this.Name = "ClosedTradesView";
-            this.Text = "Geschlossene Copytrades";
+            this.Size = new System.Drawing.Size(1100, 600);
             this.pnlTop.ResumeLayout(false);
             this.pnlTop.PerformLayout();
             ((System.ComponentModel.ISupportInitialize)(this.dgvTrades)).EndInit();
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/ClosedTradesView.cs b/src/PolyTrader.Modules.CopyTrading/Ui/ClosedTradesView.cs
index c5c39c1..61cdc00 100644
--- a/src/PolyTrader.Modules.CopyTrading/Ui/ClosedTradesView.cs
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/ClosedTradesView.cs
@@ -13,7 +13,7 @@ namespace PolyTrader.Modules.CopyTrading.Ui
     /// aufgelösten Account-/Master-Trader-Namen und einer Kurzauswertung.
     /// Layout im Designer (ClosedTradesView.Designer.cs), Daten/Logik hier.
     /// </summary>
-    public partial class ClosedTradesView : Form
+    public partial class ClosedTradesView : UserControl
     {
         private ICopyTradeLogRepository? _tradeLog;
         private TradingState? _state;
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/CopyTradingMainForm.Designer.cs b/src/PolyTrader.Modules.CopyTrading/Ui/CopyTradingMainForm.Designer.cs
new file mode 100644
index 0000000..a5071ca
--- /dev/null
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/CopyTradingMainForm.Designer.cs
@@ -0,0 +1,129 @@
+namespace PolyTrader.Modules.CopyTrading.Ui
+{
+    partial class CopyTradingMainForm
+    {
+        private System.ComponentModel.IContainer components = null;
+
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Vom Komponenten-Designer generierter Code
+
+        private void InitializeComponent()
+        {
+            this.tabControl = new System.Windows.Forms.TabControl();
+            this.tabMasters = new System.Windows.Forms.TabPage();
+            this.tabClosed = new System.Windows.Forms.TabPage();
+            this.tabSettings = new System.Windows.Forms.TabPage();
+            this.masterTradersView = new PolyTrader.Modules.CopyTrading.Ui.MasterTradersView();
+            this.closedTradesView = new PolyTrader.Modules.CopyTrading.Ui.ClosedTradesView();
+            this.accountSettingsView = new PolyTrader.Modules.CopyTrading.Ui.AccountSettingsView();
+            this.tabControl.SuspendLayout();
+            this.tabMasters.SuspendLayout();
+            this.tabClosed.SuspendLayout();
+            this.tabSettings.SuspendLayout();
+            this.SuspendLayout();
+            //
+            // tabControl
+            //
+            this.tabControl.Controls.Add(this.tabMasters);
+            this.tabControl.Controls.Add(this.tabClosed);
+            this.tabControl.Controls.Add(this.tabSettings);
+            this.tabControl.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.tabControl.Location = new System.Drawing.Point(0, 0);
+            this.tabControl.Name = "tabControl";
+            this.tabControl.SelectedIndex = 0;
+            this.tabControl.Size = new System.Drawing.Size(1200, 700);
+            this.tabControl.TabIndex = 0;
+            //
+            // tabMasters
+            //
+            this.tabMasters.Controls.Add(this.masterTradersView);
+            this.tabMasters.Location = new System.Drawing.Point(4, 24);
+            this.tabMasters.Name = "tabMasters";
+            this.tabMasters.Padding = new System.Windows.Forms.Padding(3);
+            this.tabMasters.Size = new System.Drawing.Size(1192, 672);
+            this.tabMasters.TabIndex = 0;
+            this.tabMasters.Text = "Master-Trader";
+            this.tabMasters.UseVisualStyleBackColor = true;
+            //
+            // tabClosed
+            //
+            this.tabClosed.Controls.Add(this.closedTradesView);
+            this.tabClosed.Location = new System.Drawing.Point(4, 24);
+            this.tabClosed.Name = "tabClosed";
+            this.tabClosed.Padding = new System.Windows.Forms.Padding(3);
+            this.tabClosed.Size = new System.Drawing.Size(1192, 672);
+            this.tabClosed.TabIndex = 1;
+            this.tabClosed.Text = "Geschlossene Trades";
+            this.tabClosed.UseVisualStyleBackColor = true;
+            //
+            // tabSettings
+            //
+            this.tabSettings.Controls.Add(this.accountSettingsView);
+            this.tabSettings.Location = new System.Drawing.Point(4, 24);
+            this.tabSettings.Name = "tabSettings";
+            this.tabSettings.Padding = new System.Windows.Forms.Padding(3);
+            this.tabSettings.Size = new System.Drawing.Size(1192, 672);
+            this.tabSettings.TabIndex = 2;
+            this.tabSettings.Text = "Account-Einstellungen";
+            this.tabSettings.UseVisualStyleBackColor = true;
+            //
+            // masterTradersView
+            //
+            this.masterTradersView.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.masterTradersView.Location = new System.Drawing.Point(3, 3);
+            this.masterTradersView.Name = "masterTradersView";
+            this.masterTradersView.Size = new System.Drawing.Size(1186, 666);
+            this.masterTradersView.TabIndex = 0;
+            //
+            // closedTradesView
+            //
+            this.closedTradesView.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.closedTradesView.Location = new System.Drawing.Point(3, 3);
+            this.closedTradesView.Name = "closedTradesView";
+            this.closedTradesView.Size = new System.Drawing.Size(1186, 666);
+            this.closedTradesView.TabIndex = 0;
+            //
+            // accountSettingsView
+            //
+            this.accountSettingsView.Dock = System.Windows.Forms.DockStyle.Fill;
+            this.accountSettingsView.Location = new System.Drawing.Point(3, 3);
+            this.accountSettingsView.Name = "accountSettingsView";
+            this.accountSettingsView.Size = new System.Drawing.Size(1186, 666);
+            this.accountSettingsView.TabIndex = 0;
+            //
+            // CopyTradingMainForm
+            //
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(1200, 700);
+            this.Controls.Add(this.tabControl);
+            this.MinimumSize = new System.Drawing.Size(820, 480);
+            this.Name = "CopyTradingMainForm";
+            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
+            this.Text = "Copytrading";
+            this.tabControl.ResumeLayout(false);
+            this.tabMasters.ResumeLayout(false);
+            this.tabClosed.ResumeLayout(false);
+            this.tabSettings.ResumeLayout(false);
+            this.ResumeLayout(false);
+        }
+
+        #endregion
+
+        private System.Windows.Forms.TabControl tabControl;
+        private System.Windows.Forms.TabPage tabMasters;
+        private System.Windows.Forms.TabPage tabClosed;
+        private System.Windows.Forms.TabPage tabSettings;
+        private MasterTradersView masterTradersView;
+        private ClosedTradesView closedTradesView;
+        private AccountSettingsView accountSettingsView;
+    }
+}
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/CopyTradingMainForm.cs b/src/PolyTrader.Modules.CopyTrading/Ui/CopyTradingMainForm.cs
new file mode 100644
index 0000000..d6e69d0
--- /dev/null
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/CopyTradingMainForm.cs
@@ -0,0 +1,39 @@
+using System;
+using System.Windows.Forms;
+using Microsoft.Extensions.DependencyInjection;
+using PolyTrader.Modules.CopyTrading.Persistence;
+using PolyTraderSharp;
+
+namespace PolyTrader.Modules.CopyTrading.Ui
+{
+    /// <summary>
+    /// Das Hauptfenster des Copytrading-Moduls. Bündelt alle Modul-Ansichten in einem
+    /// TabControl (Master-Trader, geschlossene Trades, Account-Einstellungen), sodass der
+    /// Launcher nur EINEN "Copytrading"-Button braucht und nicht je View ein eigenes Fenster
+    /// öffnet. Layout im Designer (CopyTradingMainForm.Designer.cs).
+    /// </summary>
+    public partial class CopyTradingMainForm : Form
+    {
+        // Parameterloser Konstruktor für den WinForms-Designer.
+        public CopyTradingMainForm()
+        {
+            InitializeComponent();
+        }
+
+        /// <summary>Versorgt die einzelnen Tab-Ansichten mit ihren Abhängigkeiten (aus dem DI-Container).</summary>
+        public void Initialize(IServiceProvider services)
+        {
+            var state = services.GetRequiredService<TradingState>();
+            var copyState = services.GetRequiredService<CopyTradingState>();
+
+            masterTradersView.Initialize(
+                services.GetRequiredService<ITrackedTraderRepository>(), state, copyState);
+
+            closedTradesView.Initialize(
+                services.GetRequiredService<ICopyTradeLogRepository>(), state, copyState);
+
+            accountSettingsView.Initialize(
+                services.GetRequiredService<ICopyTradingAccountSettingsRepository>(), state, copyState);
+        }
+    }
+}
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.Designer.cs b/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.Designer.cs
index 30b4a01..5089098 100644
--- a/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.Designer.cs
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.Designer.cs
@@ -258,15 +258,13 @@ namespace PolyTrader.Modules.CopyTrading.Ui
             //
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(1180, 640);
             this.Controls.Add(this.grid);
             this.Controls.Add(this.splitter);
             this.Controls.Add(this.rightPanel);
             this.Controls.Add(this.statusPanel);
             this.Controls.Add(this.toolbar);
-            this.MinimumSize = new System.Drawing.Size(820, 460);
             this.Name = "MasterTradersView";
-            this.Text = "Master-Trader";
+            this.Size = new System.Drawing.Size(1180, 640);
             this.toolbar.ResumeLayout(false);
             this.toolbar.PerformLayout();
             ((System.ComponentModel.ISupportInitialize)(this.grid)).EndInit();
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.cs b/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.cs
index 09e8350..30af4fa 100644
--- a/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.cs
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.cs
@@ -15,7 +15,7 @@ namespace PolyTrader.Modules.CopyTrading.Ui
     /// (<see cref="CopyTradingState.Traders"/>) synchron.
     /// Layout im Designer (MasterTradersView.Designer.cs), Daten/Logik hier.
     /// </summary>
-    public partial class MasterTradersView : Form
+    public partial class MasterTradersView : UserControl
     {
         private ITrackedTraderRepository? _repo;
         private TradingState? _state;
diff --git a/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.resx b/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.resx
new file mode 100644
index 0000000..1af7de1
--- /dev/null
+++ b/src/PolyTrader.Modules.CopyTrading/Ui/MasterTradersView.resx
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
\ No newline at end of file