diff --git a/modules/boersenchecker/module.json b/modules/boersenchecker/module.json
new file mode 100644
index 0000000..c4eb0f8
--- /dev/null
+++ b/modules/boersenchecker/module.json
@@ -0,0 +1,25 @@
+{
+  "title": "Börsenchecker",
+  "version": "0.1.0",
+  "description": "Grundgeruest fuer ein Nexus-Modul zur Beobachtung und Auswertung von Boersenwerten.",
+  "enabled_by_default": false,
+  "menu": [
+    { "label": "Übersicht", "href": "/module/boersenchecker" }
+  ],
+  "sidebar": {
+    "enabled": true,
+    "collapsible": true,
+    "default": "collapsed",
+    "items": [
+      { "label": "Übersicht", "href": "/module/boersenchecker" }
+    ]
+  },
+  "setup": {
+    "fields": []
+  },
+  "auth": {
+    "required": true,
+    "users": [],
+    "groups": []
+  }
+}
diff --git a/modules/boersenchecker/pages/index.php b/modules/boersenchecker/pages/index.php
new file mode 100644
index 0000000..f2c6bce
--- /dev/null
+++ b/modules/boersenchecker/pages/index.php
@@ -0,0 +1,28 @@
+<?php
+declare(strict_types=1);
+?>
+<div class="card">
+  <div class="pill">Börsenchecker</div>
+  <h1 style="margin-top:.75rem;">Börsenchecker</h1>
+  <p class="muted">
+    Das Modul ist im Nexus registriert und kann jetzt schrittweise um Datenquellen,
+    Watchlists, Kennzahlen und Benachrichtigungen erweitert werden.
+  </p>
+
+  <div class="card" style="margin-top:1rem; background:var(--panel-2);">
+    <strong>Status</strong>
+    <div class="muted" style="margin-top:.5rem;">
+      Aktuell ist dies das initiale Grundgeruest des Moduls.
+    </div>
+  </div>
+
+  <div class="card" style="margin-top:1rem; background:var(--panel-2);">
+    <strong>Nächste sinnvolle Ausbaustufen</strong>
+    <ul style="margin:.75rem 0 0 1.1rem;">
+      <li>Watchlist fuer Ticker und ISINs</li>
+      <li>Kursdaten per API einlesen</li>
+      <li>Performance, Tagesdelta und historische Trends anzeigen</li>
+      <li>Alerts fuer Schwellwerte definieren</li>
+    </ul>
+  </div>
+</div>
diff --git a/modules/kea/pages/data.php b/modules/kea/pages/data.php
new file mode 100644
index 0000000..f710646
--- /dev/null
+++ b/modules/kea/pages/data.php
@@ -0,0 +1,91 @@
+<?php
+use App\Database;
+use App\Repository\KeaHostMetadataRepository;
+use App\Repository\KeaHostRepository;
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store');
+
+$module = modules()->get('kea');
+$fallback = $module['db_defaults'] ?? [];
+$settings = modules()->settings('kea');
+$metadataFallback = is_array($module['metadata_db_defaults'] ?? null) ? $module['metadata_db_defaults'] : [];
+$metadataConfig = is_array($settings['metadata_db'] ?? null)
+    ? array_replace($metadataFallback, $settings['metadata_db'])
+    : $metadataFallback;
+
+try {
+    $metadataRepo = null;
+    $pdo = modules()->modulePdo('kea', $fallback);
+    if (!empty($metadataConfig['driver']) && !empty($metadataConfig['dbname'])) {
+        try {
+            $metadataRepo = new KeaHostMetadataRepository(Database::createFromArray($metadataConfig));
+            $metadataRepo->ensureSchema();
+        } catch (\Throwable) {
+            $metadataRepo = null;
+        }
+    }
+
+    $repo = new KeaHostRepository($pdo, $metadataRepo);
+    $hosts = $repo->findAll(200);
+    $stats = [
+        'total' => $repo->countReservations() + $repo->countLeases(),
+        'reservations' => $repo->countReservations(),
+        'leases' => $repo->countLeases(),
+        'groups' => [],
+        'free_ips' => [],
+    ];
+
+    foreach ($hosts as $host) {
+        $group = trim((string)($host['metadata']['group_name'] ?? ''));
+        if ($group !== '') {
+            $stats['groups'][$group] = ($stats['groups'][$group] ?? 0) + 1;
+        }
+    }
+
+    if ($metadataRepo !== null) {
+        $stats['free_ips'] = array_map(
+            static fn(array $ips): int => count($ips),
+            $metadataRepo->availableIpsByGroup(
+                array_merge($repo->usedIpAddresses(), $metadataRepo->desiredIps()),
+                4096
+            )
+        );
+    }
+
+    $rows = array_map(static function (array $host): array {
+        return [
+            'source' => (string)($host['source'] ?? 'reservation'),
+            'host_id' => (string)($host['host_id'] ?? '0'),
+            'display_name' => (string)($host['metadata']['device_name'] ?? $host['metadata']['real_name'] ?? $host['display_name'] ?? $host['hostname'] ?? 'Unbekannt'),
+            'ipv4_address' => (string)($host['ipv4_address'] ?? ''),
+            'dhcp_identifier' => (string)($host['dhcp_identifier'] ?? ''),
+            'last_seen_at' => (string)($host['last_seen_at'] ?? '-'),
+            'lease_expires_at' => (string)($host['lease_expires_at'] ?? '-'),
+            'real_name' => (string)($host['metadata']['real_name'] ?? '-'),
+            'location' => (string)($host['metadata']['location'] ?? '-'),
+            'group_name' => (string)($host['metadata']['group_name'] ?? '-'),
+        ];
+    }, $hosts);
+
+    echo json_encode([
+        'ok' => true,
+        'stats' => [
+            'total' => (int)$stats['total'],
+            'reservations' => (int)$stats['reservations'],
+            'leases' => (int)$stats['leases'],
+            'groups' => count($stats['groups']),
+            'free_ips' => array_sum($stats['free_ips']),
+        ],
+        'rows' => $rows,
+        'updated_at' => date('H:i:s'),
+    ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+} catch (\Throwable $e) {
+    http_response_code(500);
+    echo json_encode([
+        'ok' => false,
+        'error' => $e->getMessage(),
+    ], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+}
+
+exit;
diff --git a/modules/kea/partials/dashboard.php b/modules/kea/partials/dashboard.php
index 442c169..6ced4ab 100644
--- a/modules/kea/partials/dashboard.php
+++ b/modules/kea/partials/dashboard.php
@@ -11,6 +11,9 @@
         <div>
             <h2 class="section-title">KEA DHCP Hosts</h2>
             <p>Reservierungen und aktuelle Leases aus der KEA-Datenbank.</p>
+            <p class="muted kea-refresh-state" data-kea-refresh-state>
+                Automatische Aktualisierung alle 5 Sekunden.
+            </p>
         </div>
         <div class="setup-actions">
             <a class="cta-button" href="/module/kea/groups">Gruppen verwalten</a>
@@ -34,23 +37,23 @@
     <div class="stats">
         <div class="stat-card">
             <span class="stat-label">Einträge</span>
-            <span class="stat-value"><?= e((string)($stats['total'] ?? 0)) ?></span>
+            <span class="stat-value" data-kea-stat="total"><?= e((string)($stats['total'] ?? 0)) ?></span>
         </div>
         <div class="stat-card">
             <span class="stat-label">Reservierungen</span>
-            <span class="stat-value"><?= e((string)($stats['reservations'] ?? 0)) ?></span>
+            <span class="stat-value" data-kea-stat="reservations"><?= e((string)($stats['reservations'] ?? 0)) ?></span>
         </div>
         <div class="stat-card">
             <span class="stat-label">Leases</span>
-            <span class="stat-value"><?= e((string)($stats['leases'] ?? 0)) ?></span>
+            <span class="stat-value" data-kea-stat="leases"><?= e((string)($stats['leases'] ?? 0)) ?></span>
         </div>
         <div class="stat-card">
             <span class="stat-label">Gruppen</span>
-            <span class="stat-value"><?= e((string)count($stats['groups'] ?? [])) ?></span>
+            <span class="stat-value" data-kea-stat="groups"><?= e((string)count($stats['groups'] ?? [])) ?></span>
         </div>
         <div class="stat-card">
             <span class="stat-label">Freie Gruppen-IPs</span>
-            <span class="stat-value"><?= e((string)array_sum($stats['free_ips'] ?? [])) ?></span>
+            <span class="stat-value" data-kea-stat="free_ips"><?= e((string)array_sum($stats['free_ips'] ?? [])) ?></span>
         </div>
     </div>
 
@@ -78,7 +81,7 @@
                     <th>Aktion</th>
                 </tr>
                 </thead>
-                <tbody>
+                <tbody data-kea-host-rows>
                 <?php if (empty($hosts)): ?>
                     <tr>
                         <td colspan="10" class="kea-empty">
@@ -128,3 +131,98 @@
         </div>
     </div>
 </section>
+<script>
+(() => {
+    const rowsTarget = document.querySelector('[data-kea-host-rows]');
+    const stateTarget = document.querySelector('[data-kea-refresh-state]');
+    if (!rowsTarget) {
+        return;
+    }
+
+    const setText = (selector, value) => {
+        const target = document.querySelector(selector);
+        if (target) {
+            target.textContent = String(value ?? '0');
+        }
+    };
+
+    const cell = (value, className = '') => {
+        const td = document.createElement('td');
+        if (className) {
+            td.className = className;
+        }
+        td.textContent = value || '-';
+        return td;
+    };
+
+    const renderRows = (rows) => {
+        rowsTarget.textContent = '';
+        if (!Array.isArray(rows) || rows.length === 0) {
+            const tr = document.createElement('tr');
+            const td = cell('Keine Reservierungen oder aktiven Leases gefunden.', 'kea-empty');
+            td.colSpan = 10;
+            tr.appendChild(td);
+            rowsTarget.appendChild(tr);
+            return;
+        }
+
+        for (const row of rows) {
+            const tr = document.createElement('tr');
+            const source = document.createElement('td');
+            const pill = document.createElement('span');
+            pill.className = 'pill';
+            pill.textContent = row.source === 'lease' ? 'Lease' : 'Reservierung';
+            source.appendChild(pill);
+            tr.appendChild(source);
+
+            tr.appendChild(cell(row.display_name));
+            tr.appendChild(cell(row.ipv4_address, 'mono'));
+            tr.appendChild(cell(row.dhcp_identifier, 'mono'));
+            tr.appendChild(cell(row.last_seen_at));
+            tr.appendChild(cell(row.lease_expires_at));
+            tr.appendChild(cell(row.real_name));
+            tr.appendChild(cell(row.location));
+            tr.appendChild(cell(row.group_name));
+
+            const action = document.createElement('td');
+            const link = document.createElement('a');
+            link.className = 'nav-link';
+            link.href = `/module/kea/edit?source=${encodeURIComponent(row.source || 'reservation')}&id=${encodeURIComponent(row.host_id || '0')}`;
+            link.textContent = 'Bearbeiten';
+            action.appendChild(link);
+            tr.appendChild(action);
+
+            rowsTarget.appendChild(tr);
+        }
+    };
+
+    const refresh = async () => {
+        try {
+            const response = await fetch('/module/kea/data', {
+                headers: {Accept: 'application/json'},
+                cache: 'no-store',
+            });
+            const payload = await response.json();
+            if (!response.ok || !payload.ok) {
+                throw new Error(payload.error || 'Aktualisierung fehlgeschlagen.');
+            }
+
+            setText('[data-kea-stat="total"]', payload.stats?.total);
+            setText('[data-kea-stat="reservations"]', payload.stats?.reservations);
+            setText('[data-kea-stat="leases"]', payload.stats?.leases);
+            setText('[data-kea-stat="groups"]', payload.stats?.groups);
+            setText('[data-kea-stat="free_ips"]', payload.stats?.free_ips);
+            renderRows(payload.rows);
+            if (stateTarget) {
+                stateTarget.textContent = `Automatische Aktualisierung aktiv. Zuletzt aktualisiert: ${payload.updated_at || '-'}`;
+            }
+        } catch (error) {
+            if (stateTarget) {
+                stateTarget.textContent = `Automatische Aktualisierung fehlgeschlagen: ${error.message}`;
+            }
+        }
+    };
+
+    window.setInterval(refresh, 5000);
+})();
+</script>