diff --git a/src/App.tsx b/src/App.tsx
index 28af05d..c1df3b1 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -27,6 +27,9 @@ const Trading = lazy(() => import('./modules/trading/pages/Trading'));
 const MLDashboard = lazy(() => import('./modules/ml/pages/MLDashboard'));
 const BacktestingDashboard = lazy(() => import('./modules/backtesting/pages/BacktestingDashboard'));
 const Investment = lazy(() => import('./modules/investment/pages/Investment'));
+const InvestmentPortfolio = lazy(() => import('./modules/investment/pages/Portfolio'));
+const InvestmentProducts = lazy(() => import('./modules/investment/pages/Products'));
+const AccountDetail = lazy(() => import('./modules/investment/pages/AccountDetail'));
 const Settings = lazy(() => import('./modules/settings/pages/Settings'));
 const Assistant = lazy(() => import('./modules/assistant/pages/Assistant'));
 
@@ -87,6 +90,9 @@ function App() {
           <Route path="/ml-dashboard" element={<MLDashboard />} />
           <Route path="/backtesting" element={<BacktestingDashboard />} />
           <Route path="/investment" element={<Investment />} />
+          <Route path="/investment/portfolio" element={<InvestmentPortfolio />} />
+          <Route path="/investment/products" element={<InvestmentProducts />} />
+          <Route path="/investment/accounts/:accountId" element={<AccountDetail />} />
 
           {/* Portfolio Manager */}
           <Route path="/portfolio" element={<PortfolioDashboard />} />
diff --git a/src/modules/investment/pages/AccountDetail.tsx b/src/modules/investment/pages/AccountDetail.tsx
new file mode 100644
index 0000000..759bce6
--- /dev/null
+++ b/src/modules/investment/pages/AccountDetail.tsx
@@ -0,0 +1,608 @@
+/**
+ * Account Detail Page
+ * Shows detailed information about a specific investment account
+ */
+
+import React, { useEffect, useState } from 'react';
+import { useParams, useNavigate, Link } from 'react-router-dom';
+import { ArrowLeft, TrendingUp, TrendingDown, Calendar, Clock, DollarSign, AlertCircle } from 'lucide-react';
+import investmentService, { AccountDetail as AccountDetailType, Transaction, Distribution } from '../../../services/investment.service';
+import { DepositForm } from '../components/DepositForm';
+import { WithdrawForm } from '../components/WithdrawForm';
+
+// ============================================================================
+// Types
+// ============================================================================
+
+type TabType = 'overview' | 'transactions' | 'distributions' | 'deposit' | 'withdraw';
+
+// ============================================================================
+// Subcomponents
+// ============================================================================
+
+interface StatCardProps {
+  label: string;
+  value: string;
+  subValue?: string;
+  icon: React.ReactNode;
+  trend?: 'up' | 'down' | 'neutral';
+}
+
+const StatCard: React.FC<StatCardProps> = ({ label, value, subValue, icon, trend }) => {
+  const trendColors = {
+    up: 'text-green-500',
+    down: 'text-red-500',
+    neutral: 'text-gray-500',
+  };
+
+  return (
+    <div className="bg-white dark:bg-gray-800 rounded-xl p-5 shadow-lg">
+      <div className="flex items-start justify-between">
+        <div className="p-2 rounded-lg bg-blue-100 dark:bg-blue-900/30">{icon}</div>
+        {trend && (
+          <span className={trendColors[trend]}>
+            {trend === 'up' ? <TrendingUp size={20} /> : trend === 'down' ? <TrendingDown size={20} /> : null}
+          </span>
+        )}
+      </div>
+      <p className="mt-4 text-sm text-gray-500 dark:text-gray-400">{label}</p>
+      <p className="text-2xl font-bold text-gray-900 dark:text-white">{value}</p>
+      {subValue && <p className={`text-sm ${trend ? trendColors[trend] : 'text-gray-500'}`}>{subValue}</p>}
+    </div>
+  );
+};
+
+interface TransactionRowProps {
+  transaction: Transaction;
+}
+
+const TransactionRow: React.FC<TransactionRowProps> = ({ transaction }) => {
+  const typeIcons: Record<string, string> = {
+    deposit: '📥',
+    withdrawal: '📤',
+    distribution: '💰',
+    fee: '📋',
+    adjustment: '🔄',
+  };
+
+  const statusColors: Record<string, string> = {
+    pending: 'bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-400',
+    completed: 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-400',
+    failed: 'bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-400',
+    cancelled: 'bg-gray-100 text-gray-800 dark:bg-gray-900/30 dark:text-gray-400',
+  };
+
+  const isCredit = ['deposit', 'distribution'].includes(transaction.type);
+
+  return (
+    <div className="flex items-center justify-between py-4 border-b border-gray-200 dark:border-gray-700 last:border-0">
+      <div className="flex items-center gap-4">
+        <span className="text-2xl">{typeIcons[transaction.type] || '📋'}</span>
+        <div>
+          <p className="font-medium text-gray-900 dark:text-white capitalize">
+            {transaction.type.replace('_', ' ')}
+          </p>
+          <p className="text-sm text-gray-500 dark:text-gray-400">
+            {new Date(transaction.createdAt).toLocaleDateString()} {new Date(transaction.createdAt).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}
+          </p>
+        </div>
+      </div>
+      <div className="text-right">
+        <p className={`font-bold ${isCredit ? 'text-green-500' : 'text-red-500'}`}>
+          {isCredit ? '+' : '-'}${Math.abs(transaction.amount).toLocaleString(undefined, { minimumFractionDigits: 2 })}
+        </p>
+        <span className={`text-xs px-2 py-1 rounded-full ${statusColors[transaction.status]}`}>
+          {transaction.status}
+        </span>
+      </div>
+    </div>
+  );
+};
+
+interface DistributionRowProps {
+  distribution: Distribution;
+}
+
+const DistributionRow: React.FC<DistributionRowProps> = ({ distribution }) => {
+  return (
+    <div className="flex items-center justify-between py-4 border-b border-gray-200 dark:border-gray-700 last:border-0">
+      <div className="flex items-center gap-4">
+        <span className="text-2xl">💰</span>
+        <div>
+          <p className="font-medium text-gray-900 dark:text-white">
+            Distribución de Rendimientos
+          </p>
+          <p className="text-sm text-gray-500 dark:text-gray-400">
+            {new Date(distribution.distributedAt).toLocaleDateString()} - Tasa: {(distribution.rate * 100).toFixed(4)}%
+          </p>
+        </div>
+      </div>
+      <div className="text-right">
+        <p className="font-bold text-green-500">
+          +${distribution.amount.toLocaleString(undefined, { minimumFractionDigits: 2 })}
+        </p>
+        <p className="text-xs text-gray-500 dark:text-gray-400">
+          Balance: ${distribution.balanceAfter.toLocaleString(undefined, { minimumFractionDigits: 2 })}
+        </p>
+      </div>
+    </div>
+  );
+};
+
+// ============================================================================
+// Performance Chart (Simple Canvas)
+// ============================================================================
+
+interface PerformanceChartProps {
+  data: Array<{ date: string; balance: number; pnl: number }>;
+}
+
+const PerformanceChart: React.FC<PerformanceChartProps> = ({ data }) => {
+  const canvasRef = React.useRef<HTMLCanvasElement>(null);
+
+  useEffect(() => {
+    const canvas = canvasRef.current;
+    if (!canvas || data.length === 0) return;
+
+    const ctx = canvas.getContext('2d');
+    if (!ctx) return;
+
+    const width = canvas.width;
+    const height = canvas.height;
+    const padding = { top: 20, right: 20, bottom: 30, left: 60 };
+    const chartWidth = width - padding.left - padding.right;
+    const chartHeight = height - padding.top - padding.bottom;
+
+    // Clear canvas
+    ctx.clearRect(0, 0, width, height);
+
+    // Calculate min/max
+    const balances = data.map(d => d.balance);
+    const minBalance = Math.min(...balances) * 0.99;
+    const maxBalance = Math.max(...balances) * 1.01;
+
+    // Draw grid lines
+    ctx.strokeStyle = '#374151';
+    ctx.lineWidth = 0.5;
+    for (let i = 0; i <= 4; i++) {
+      const y = padding.top + (chartHeight / 4) * i;
+      ctx.beginPath();
+      ctx.moveTo(padding.left, y);
+      ctx.lineTo(width - padding.right, y);
+      ctx.stroke();
+
+      // Y-axis labels
+      const value = maxBalance - ((maxBalance - minBalance) / 4) * i;
+      ctx.fillStyle = '#9CA3AF';
+      ctx.font = '12px system-ui';
+      ctx.textAlign = 'right';
+      ctx.fillText(`$${value.toLocaleString(undefined, { maximumFractionDigits: 0 })}`, padding.left - 10, y + 4);
+    }
+
+    // Draw line
+    ctx.beginPath();
+    ctx.strokeStyle = '#3B82F6';
+    ctx.lineWidth = 2;
+
+    data.forEach((point, i) => {
+      const x = padding.left + (chartWidth / (data.length - 1)) * i;
+      const y = padding.top + chartHeight - ((point.balance - minBalance) / (maxBalance - minBalance)) * chartHeight;
+
+      if (i === 0) {
+        ctx.moveTo(x, y);
+      } else {
+        ctx.lineTo(x, y);
+      }
+    });
+    ctx.stroke();
+
+    // Draw gradient fill
+    const gradient = ctx.createLinearGradient(0, padding.top, 0, height - padding.bottom);
+    gradient.addColorStop(0, 'rgba(59, 130, 246, 0.3)');
+    gradient.addColorStop(1, 'rgba(59, 130, 246, 0)');
+
+    ctx.beginPath();
+    data.forEach((point, i) => {
+      const x = padding.left + (chartWidth / (data.length - 1)) * i;
+      const y = padding.top + chartHeight - ((point.balance - minBalance) / (maxBalance - minBalance)) * chartHeight;
+      if (i === 0) {
+        ctx.moveTo(x, y);
+      } else {
+        ctx.lineTo(x, y);
+      }
+    });
+    ctx.lineTo(padding.left + chartWidth, height - padding.bottom);
+    ctx.lineTo(padding.left, height - padding.bottom);
+    ctx.closePath();
+    ctx.fillStyle = gradient;
+    ctx.fill();
+
+    // X-axis labels (show a few dates)
+    const labelIndices = [0, Math.floor(data.length / 2), data.length - 1];
+    ctx.fillStyle = '#9CA3AF';
+    ctx.font = '11px system-ui';
+    ctx.textAlign = 'center';
+    labelIndices.forEach(i => {
+      if (data[i]) {
+        const x = padding.left + (chartWidth / (data.length - 1)) * i;
+        const date = new Date(data[i].date);
+        ctx.fillText(date.toLocaleDateString('es-ES', { month: 'short', day: 'numeric' }), x, height - 10);
+      }
+    });
+  }, [data]);
+
+  return (
+    <canvas
+      ref={canvasRef}
+      width={800}
+      height={300}
+      className="w-full h-auto"
+    />
+  );
+};
+
+// ============================================================================
+// Main Component
+// ============================================================================
+
+export const AccountDetail: React.FC = () => {
+  const { accountId } = useParams<{ accountId: string }>();
+  const navigate = useNavigate();
+
+  const [account, setAccount] = useState<AccountDetailType | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [activeTab, setActiveTab] = useState<TabType>('overview');
+  const [allTransactions, setAllTransactions] = useState<Transaction[]>([]);
+  const [loadingMore, setLoadingMore] = useState(false);
+
+  useEffect(() => {
+    if (accountId) {
+      loadAccount();
+    }
+  }, [accountId]);
+
+  const loadAccount = async () => {
+    if (!accountId) return;
+
+    try {
+      setLoading(true);
+      setError(null);
+      const data = await investmentService.getAccountById(accountId);
+      setAccount(data);
+      setAllTransactions(data.recentTransactions || []);
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Error loading account');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const loadMoreTransactions = async () => {
+    if (!accountId || loadingMore) return;
+
+    try {
+      setLoadingMore(true);
+      const { transactions } = await investmentService.getTransactions(accountId, {
+        limit: 20,
+        offset: allTransactions.length,
+      });
+      setAllTransactions(prev => [...prev, ...transactions]);
+    } catch (err) {
+      console.error('Error loading transactions:', err);
+    } finally {
+      setLoadingMore(false);
+    }
+  };
+
+  const handleDepositSuccess = () => {
+    setActiveTab('overview');
+    loadAccount();
+  };
+
+  const handleWithdrawSuccess = () => {
+    setActiveTab('overview');
+    loadAccount();
+  };
+
+  if (loading) {
+    return (
+      <div className="flex items-center justify-center min-h-96">
+        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-blue-600"></div>
+      </div>
+    );
+  }
+
+  if (error || !account) {
+    return (
+      <div className="max-w-4xl mx-auto px-4 py-8">
+        <div className="bg-red-50 dark:bg-red-900/20 border border-red-200 dark:border-red-800 rounded-xl p-6 text-center">
+          <AlertCircle className="w-12 h-12 text-red-500 mx-auto mb-4" />
+          <h2 className="text-xl font-bold text-red-700 dark:text-red-400 mb-2">
+            Error al cargar la cuenta
+          </h2>
+          <p className="text-red-600 dark:text-red-300 mb-4">{error || 'Cuenta no encontrada'}</p>
+          <button
+            onClick={() => navigate('/investment/portfolio')}
+            className="px-6 py-2 bg-red-600 text-white rounded-lg hover:bg-red-700"
+          >
+            Volver al Portfolio
+          </button>
+        </div>
+      </div>
+    );
+  }
+
+  const totalReturn = account.balance - account.totalDeposited + account.totalWithdrawn;
+  const returnPercent = account.totalDeposited > 0 ? (totalReturn / account.totalDeposited) * 100 : 0;
+
+  const tabs: { key: TabType; label: string }[] = [
+    { key: 'overview', label: 'Resumen' },
+    { key: 'transactions', label: 'Transacciones' },
+    { key: 'distributions', label: 'Distribuciones' },
+    { key: 'deposit', label: 'Depositar' },
+    { key: 'withdraw', label: 'Retirar' },
+  ];
+
+  return (
+    <div className="max-w-6xl mx-auto px-4 py-8">
+      {/* Header */}
+      <div className="flex items-center gap-4 mb-8">
+        <button
+          onClick={() => navigate('/investment/portfolio')}
+          className="p-2 rounded-lg bg-gray-100 dark:bg-gray-800 hover:bg-gray-200 dark:hover:bg-gray-700"
+        >
+          <ArrowLeft className="w-5 h-5 text-gray-600 dark:text-gray-400" />
+        </button>
+        <div className="flex-1">
+          <div className="flex items-center gap-3">
+            <h1 className="text-2xl font-bold text-gray-900 dark:text-white">
+              {account.product.name}
+            </h1>
+            <span className={`px-3 py-1 rounded-full text-sm font-medium ${
+              account.status === 'active'
+                ? 'bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-400'
+                : account.status === 'suspended'
+                ? 'bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-400'
+                : 'bg-gray-100 text-gray-800 dark:bg-gray-900/30 dark:text-gray-400'
+            }`}>
+              {account.status === 'active' ? 'Activa' : account.status === 'suspended' ? 'Suspendida' : 'Cerrada'}
+            </span>
+          </div>
+          <p className="text-gray-500 dark:text-gray-400">
+            Cuenta #{account.accountNumber} - Desde {new Date(account.openedAt).toLocaleDateString()}
+          </p>
+        </div>
+      </div>
+
+      {/* Stats Grid */}
+      <div className="grid grid-cols-2 lg:grid-cols-4 gap-4 mb-8">
+        <StatCard
+          label="Balance Actual"
+          value={`$${account.balance.toLocaleString(undefined, { minimumFractionDigits: 2 })}`}
+          icon={<DollarSign className="w-5 h-5 text-blue-600" />}
+        />
+        <StatCard
+          label="Total Invertido"
+          value={`$${account.totalDeposited.toLocaleString(undefined, { minimumFractionDigits: 2 })}`}
+          icon={<TrendingUp className="w-5 h-5 text-purple-600" />}
+        />
+        <StatCard
+          label="Ganancias"
+          value={`$${Math.abs(totalReturn).toLocaleString(undefined, { minimumFractionDigits: 2 })}`}
+          subValue={`${returnPercent >= 0 ? '+' : ''}${returnPercent.toFixed(2)}%`}
+          icon={<TrendingUp className="w-5 h-5 text-green-600" />}
+          trend={totalReturn >= 0 ? 'up' : 'down'}
+        />
+        <StatCard
+          label="Total Retirado"
+          value={`$${account.totalWithdrawn.toLocaleString(undefined, { minimumFractionDigits: 2 })}`}
+          icon={<Clock className="w-5 h-5 text-orange-600" />}
+        />
+      </div>
+
+      {/* Tabs */}
+      <div className="border-b border-gray-200 dark:border-gray-700 mb-6">
+        <div className="flex gap-1 overflow-x-auto">
+          {tabs.map(tab => (
+            <button
+              key={tab.key}
+              onClick={() => setActiveTab(tab.key)}
+              className={`px-4 py-3 text-sm font-medium border-b-2 transition-colors whitespace-nowrap ${
+                activeTab === tab.key
+                  ? 'border-blue-600 text-blue-600'
+                  : 'border-transparent text-gray-500 hover:text-gray-700 dark:hover:text-gray-300'
+              }`}
+            >
+              {tab.label}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      {/* Tab Content */}
+      <div className="bg-white dark:bg-gray-800 rounded-xl shadow-lg p-6">
+        {activeTab === 'overview' && (
+          <div className="space-y-8">
+            {/* Performance Chart */}
+            {account.performanceHistory && account.performanceHistory.length > 0 && (
+              <div>
+                <h3 className="text-lg font-semibold text-gray-900 dark:text-white mb-4">
+                  Rendimiento Histórico
+                </h3>
+                <PerformanceChart data={account.performanceHistory} />
+              </div>
+            )}
+
+            {/* Account Info */}
+            <div className="grid md:grid-cols-2 gap-6">
+              <div>
+                <h3 className="text-lg font-semibold text-gray-900 dark:text-white mb-4">
+                  Información de la Cuenta
+                </h3>
+                <dl className="space-y-3">
+                  <div className="flex justify-between">
+                    <dt className="text-gray-500 dark:text-gray-400">Producto</dt>
+                    <dd className="font-medium text-gray-900 dark:text-white">{account.product.name}</dd>
+                  </div>
+                  <div className="flex justify-between">
+                    <dt className="text-gray-500 dark:text-gray-400">Perfil de Riesgo</dt>
+                    <dd className="font-medium text-gray-900 dark:text-white capitalize">{account.product.riskProfile}</dd>
+                  </div>
+                  <div className="flex justify-between">
+                    <dt className="text-gray-500 dark:text-gray-400">Inversión Inicial</dt>
+                    <dd className="font-medium text-gray-900 dark:text-white">
+                      ${account.initialInvestment.toLocaleString(undefined, { minimumFractionDigits: 2 })}
+                    </dd>
+                  </div>
+                  <div className="flex justify-between">
+                    <dt className="text-gray-500 dark:text-gray-400">Fecha de Apertura</dt>
+                    <dd className="font-medium text-gray-900 dark:text-white">
+                      {new Date(account.openedAt).toLocaleDateString()}
+                    </dd>
+                  </div>
+                </dl>
+              </div>
+
+              <div>
+                <h3 className="text-lg font-semibold text-gray-900 dark:text-white mb-4">
+                  Últimas Transacciones
+                </h3>
+                {account.recentTransactions && account.recentTransactions.length > 0 ? (
+                  <div>
+                    {account.recentTransactions.slice(0, 5).map(tx => (
+                      <TransactionRow key={tx.id} transaction={tx} />
+                    ))}
+                    {account.recentTransactions.length > 5 && (
+                      <button
+                        onClick={() => setActiveTab('transactions')}
+                        className="w-full mt-4 text-center text-blue-600 hover:text-blue-700 text-sm font-medium"
+                      >
+                        Ver todas las transacciones
+                      </button>
+                    )}
+                  </div>
+                ) : (
+                  <p className="text-gray-500 dark:text-gray-400 text-center py-8">
+                    No hay transacciones recientes
+                  </p>
+                )}
+              </div>
+            </div>
+          </div>
+        )}
+
+        {activeTab === 'transactions' && (
+          <div>
+            <h3 className="text-lg font-semibold text-gray-900 dark:text-white mb-4">
+              Historial de Transacciones
+            </h3>
+            {allTransactions.length > 0 ? (
+              <div>
+                {allTransactions.map(tx => (
+                  <TransactionRow key={tx.id} transaction={tx} />
+                ))}
+                <button
+                  onClick={loadMoreTransactions}
+                  disabled={loadingMore}
+                  className="w-full mt-4 py-3 text-center text-blue-600 hover:text-blue-700 text-sm font-medium disabled:opacity-50"
+                >
+                  {loadingMore ? 'Cargando...' : 'Cargar más'}
+                </button>
+              </div>
+            ) : (
+              <p className="text-gray-500 dark:text-gray-400 text-center py-12">
+                No hay transacciones registradas
+              </p>
+            )}
+          </div>
+        )}
+
+        {activeTab === 'distributions' && (
+          <div>
+            <h3 className="text-lg font-semibold text-gray-900 dark:text-white mb-4">
+              Historial de Distribuciones
+            </h3>
+            {account.recentDistributions && account.recentDistributions.length > 0 ? (
+              <div>
+                {account.recentDistributions.map(dist => (
+                  <DistributionRow key={dist.id} distribution={dist} />
+                ))}
+              </div>
+            ) : (
+              <p className="text-gray-500 dark:text-gray-400 text-center py-12">
+                No hay distribuciones registradas
+              </p>
+            )}
+          </div>
+        )}
+
+        {activeTab === 'deposit' && (
+          <div className="max-w-lg mx-auto">
+            <h3 className="text-lg font-semibold text-gray-900 dark:text-white mb-4">
+              Depositar Fondos
+            </h3>
+            <DepositForm
+              accounts={[
+                {
+                  id: account.id,
+                  accountNumber: account.accountNumber,
+                  productName: account.product.name,
+                  currentBalance: account.balance,
+                },
+              ]}
+              onSuccess={handleDepositSuccess}
+              onCancel={() => setActiveTab('overview')}
+            />
+          </div>
+        )}
+
+        {activeTab === 'withdraw' && (
+          <div className="max-w-lg mx-auto">
+            <h3 className="text-lg font-semibold text-gray-900 dark:text-white mb-4">
+              Solicitar Retiro
+            </h3>
+            <WithdrawForm
+              accounts={[
+                {
+                  id: account.id,
+                  accountNumber: account.accountNumber,
+                  productName: account.product.name,
+                  currentBalance: account.balance,
+                },
+              ]}
+              onSuccess={handleWithdrawSuccess}
+              onCancel={() => setActiveTab('overview')}
+            />
+          </div>
+        )}
+      </div>
+
+      {/* Quick Actions */}
+      {activeTab === 'overview' && account.status === 'active' && (
+        <div className="mt-6 flex flex-wrap gap-4">
+          <button
+            onClick={() => setActiveTab('deposit')}
+            className="px-6 py-3 bg-blue-600 text-white font-medium rounded-lg hover:bg-blue-700 transition-colors"
+          >
+            Depositar
+          </button>
+          <button
+            onClick={() => setActiveTab('withdraw')}
+            className="px-6 py-3 bg-gray-100 dark:bg-gray-700 text-gray-900 dark:text-white font-medium rounded-lg hover:bg-gray-200 dark:hover:bg-gray-600 transition-colors"
+          >
+            Retirar
+          </button>
+          <Link
+            to="/investment/products"
+            className="px-6 py-3 border border-gray-300 dark:border-gray-600 text-gray-700 dark:text-gray-300 font-medium rounded-lg hover:bg-gray-50 dark:hover:bg-gray-700 transition-colors"
+          >
+            Ver Productos
+          </Link>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default AccountDetail;
diff --git a/src/services/investment.service.ts b/src/services/investment.service.ts
new file mode 100644
index 0000000..4a548f2
--- /dev/null
+++ b/src/services/investment.service.ts
@@ -0,0 +1,247 @@
+/**
+ * Investment Service
+ * API client for investment accounts, products, transactions, and withdrawals
+ */
+
+import axios from 'axios';
+
+const API_BASE = '/api/v1/investment';
+
+// ============================================================================
+// Types
+// ============================================================================
+
+export interface Product {
+  id: string;
+  code: string;
+  name: string;
+  description: string;
+  riskProfile: 'conservative' | 'moderate' | 'aggressive';
+  targetReturnMin: number;
+  targetReturnMax: number;
+  maxDrawdown: number;
+  minInvestment: number;
+  managementFee: number;
+  performanceFee: number;
+  isActive: boolean;
+}
+
+export interface ProductPerformance {
+  date: string;
+  cumulativeReturn: number;
+  dailyReturn: number;
+}
+
+export interface InvestmentAccount {
+  id: string;
+  accountNumber: string;
+  productId: string;
+  product: {
+    code: string;
+    name: string;
+    riskProfile: string;
+  };
+  status: 'active' | 'suspended' | 'closed';
+  balance: number;
+  initialInvestment: number;
+  totalDeposited: number;
+  totalWithdrawn: number;
+  totalEarnings: number;
+  unrealizedPnl: number;
+  unrealizedPnlPercent: number;
+  openedAt: string;
+  closedAt?: string;
+}
+
+export interface AccountSummary {
+  totalBalance: number;
+  totalEarnings: number;
+  totalDeposited: number;
+  totalWithdrawn: number;
+  overallReturn: number;
+  overallReturnPercent: number;
+  accounts: InvestmentAccount[];
+}
+
+export interface Transaction {
+  id: string;
+  accountId: string;
+  type: 'deposit' | 'withdrawal' | 'distribution' | 'fee' | 'adjustment';
+  amount: number;
+  balanceAfter: number;
+  status: 'pending' | 'completed' | 'failed' | 'cancelled';
+  description: string;
+  reference?: string;
+  createdAt: string;
+  completedAt?: string;
+}
+
+export interface Withdrawal {
+  id: string;
+  accountId: string;
+  amount: number;
+  status: 'pending' | 'approved' | 'processing' | 'completed' | 'rejected';
+  requestedAt: string;
+  processedAt?: string;
+  bankInfo?: {
+    bankName: string;
+    accountLast4: string;
+  };
+  cryptoInfo?: {
+    network: string;
+    addressLast8: string;
+  };
+  rejectionReason?: string;
+}
+
+export interface Distribution {
+  id: string;
+  accountId: string;
+  amount: number;
+  rate: number;
+  balanceBefore: number;
+  balanceAfter: number;
+  distributedAt: string;
+}
+
+export interface AccountDetail extends InvestmentAccount {
+  recentTransactions: Transaction[];
+  recentDistributions: Distribution[];
+  performanceHistory: Array<{
+    date: string;
+    balance: number;
+    pnl: number;
+  }>;
+}
+
+// ============================================================================
+// API Functions - Products
+// ============================================================================
+
+export async function getProducts(riskProfile?: string): Promise<Product[]> {
+  const params = riskProfile ? { riskProfile } : {};
+  const response = await axios.get(`${API_BASE}/products`, { params });
+  return response.data.data;
+}
+
+export async function getProductById(productId: string): Promise<Product> {
+  const response = await axios.get(`${API_BASE}/products/${productId}`);
+  return response.data.data;
+}
+
+export async function getProductPerformance(
+  productId: string,
+  period: 'week' | 'month' | '3months' | 'year' = 'month'
+): Promise<ProductPerformance[]> {
+  const response = await axios.get(`${API_BASE}/products/${productId}/performance`, {
+    params: { period },
+  });
+  return response.data.data;
+}
+
+// ============================================================================
+// API Functions - Accounts
+// ============================================================================
+
+export async function getUserAccounts(): Promise<InvestmentAccount[]> {
+  const response = await axios.get(`${API_BASE}/accounts`);
+  return response.data.data;
+}
+
+export async function getAccountSummary(): Promise<AccountSummary> {
+  const response = await axios.get(`${API_BASE}/accounts/summary`);
+  return response.data.data;
+}
+
+export async function getAccountById(accountId: string): Promise<AccountDetail> {
+  const response = await axios.get(`${API_BASE}/accounts/${accountId}`);
+  return response.data.data;
+}
+
+export async function createAccount(productId: string, initialDeposit: number): Promise<InvestmentAccount> {
+  const response = await axios.post(`${API_BASE}/accounts`, { productId, initialDeposit });
+  return response.data.data;
+}
+
+export async function closeAccount(accountId: string): Promise<void> {
+  await axios.post(`${API_BASE}/accounts/${accountId}/close`);
+}
+
+// ============================================================================
+// API Functions - Transactions
+// ============================================================================
+
+export async function getTransactions(
+  accountId: string,
+  options?: {
+    type?: string;
+    status?: string;
+    limit?: number;
+    offset?: number;
+  }
+): Promise<{ transactions: Transaction[]; total: number }> {
+  const response = await axios.get(`${API_BASE}/accounts/${accountId}/transactions`, {
+    params: options,
+  });
+  return response.data.data;
+}
+
+export async function createDeposit(accountId: string, amount: number): Promise<Transaction> {
+  const response = await axios.post(`${API_BASE}/accounts/${accountId}/deposit`, { amount });
+  return response.data.data;
+}
+
+export async function createWithdrawal(
+  accountId: string,
+  amount: number,
+  destination: {
+    bankInfo?: { bankName: string; accountNumber: string; routingNumber: string };
+    cryptoInfo?: { network: string; address: string };
+  }
+): Promise<Withdrawal> {
+  const response = await axios.post(`${API_BASE}/accounts/${accountId}/withdraw`, {
+    amount,
+    ...destination,
+  });
+  return response.data.data;
+}
+
+// ============================================================================
+// API Functions - Distributions
+// ============================================================================
+
+export async function getDistributions(accountId: string): Promise<Distribution[]> {
+  const response = await axios.get(`${API_BASE}/accounts/${accountId}/distributions`);
+  return response.data.data;
+}
+
+// ============================================================================
+// API Functions - Withdrawals
+// ============================================================================
+
+export async function getWithdrawals(status?: string): Promise<Withdrawal[]> {
+  const params = status ? { status } : {};
+  const response = await axios.get(`${API_BASE}/withdrawals`, { params });
+  return response.data.data;
+}
+
+export default {
+  // Products
+  getProducts,
+  getProductById,
+  getProductPerformance,
+  // Accounts
+  getUserAccounts,
+  getAccountSummary,
+  getAccountById,
+  createAccount,
+  closeAccount,
+  // Transactions
+  getTransactions,
+  createDeposit,
+  createWithdrawal,
+  // Distributions
+  getDistributions,
+  // Withdrawals
+  getWithdrawals,
+};