diff --git a/README.md b/README.md
index 4bb4cba..8b397d2 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,9 @@ Akses UI: http://localhost:18069 — login `admin` / `admin`
 - ✅ Odoo 17 container jalan (port 18069), DB PostgreSQL 16 healthy
 - ✅ JSON-RPC aktif (uid `admin` verified) — endpoint yang akan dipakai Flutter
 - ✅ **Addon `saat_invest` terinstal** (model saham, transaksi, portofolio + seed 5 saham IDX)
-- ✅ End-to-end teruji: buat beli/jual → recalculate → hitung avg cost & realized/unrealized P/L
+- ✅ **Portofolio auto-sync**: otomatis diperbarui tiap transaksi ditambah/ubah/hapus
+      (tidak perlu tombol manual; buka menu Portofolio selalu datanya segar)
+- ✅ End-to-end teruji: buat beli/jual → portofolio ter-update → hitung avg cost & realized/unrealized P/L
 - ⏳ Aplikasi Flutter (login, catat jual/beli, portfolio, P/L)
 
 ## Install / upgrade addon saat_invest
diff --git a/addons/saat_invest/models/portofolio.py b/addons/saat_invest/models/portofolio.py
index 6ee4bdf..1fc56be 100644
--- a/addons/saat_invest/models/portofolio.py
+++ b/addons/saat_invest/models/portofolio.py
@@ -75,6 +75,19 @@ class SaatPortofolio(models.Model):
             'count': len(portfolios),
         }
 
+    def action_recalc_click(self):
+        """Tombol 'Rekalkulasi' untuk UI web: hitung ulang lalu muat ulang view list."""
+        result = self.env['saat.portofolio'].action_recalculate()
+        # kembalikan action window portofolio agar view ter-refresh
+        action = {
+            'type': 'ir.actions.act_window',
+            'name': 'Portofolio',
+            'res_model': 'saat.portofolio',
+            'view_mode': 'list,form',
+            'target': 'current',
+        }
+        return action
+
     # --- computed store fields ---
     @api.depends('total_beli_lembar', 'total_jual_lembar')
     def _compute_sisa(self):
diff --git a/addons/saat_invest/models/transaksi.py b/addons/saat_invest/models/transaksi.py
index 217b5ad..67cac6d 100644
--- a/addons/saat_invest/models/transaksi.py
+++ b/addons/saat_invest/models/transaksi.py
@@ -49,3 +49,24 @@ class SaatTransaksi(models.Model):
                 raise models.ValidationError("Volume harus lebih dari 0.")
             if r.harga < 0:
                 raise models.ValidationError("Harga tidak boleh negatif.")
+
+    # --- auto-sync portofolio: setiap transaksi berubah, portofolio diperbarui ---
+    def _resync_portofolio(self):
+        """Rekalkulasi portofolio dari seluruh transaksi (idempoten)."""
+        self.env['saat.portofolio'].action_recalculate()
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        res = super().create(vals_list)
+        res._resync_portofolio()
+        return res
+
+    def write(self, vals):
+        res = super().write(vals)
+        self._resync_portofolio()
+        return res
+
+    def unlink(self):
+        res = super().unlink()
+        self._resync_portofolio()
+        return res
diff --git a/addons/saat_invest/views/portofolio_views.xml b/addons/saat_invest/views/portofolio_views.xml
index 40f519f..856c125 100644
--- a/addons/saat_invest/views/portofolio_views.xml
+++ b/addons/saat_invest/views/portofolio_views.xml
@@ -21,6 +21,10 @@
         <field name="model">saat.portofolio</field>
         <field name="arch" type="xml">
             <form string="Portofolio">
+                <header>
+                    <button name="action_recalc_click" string="Rekalkulasi"
+                            type="object" class="oe_highlight"/>
+                </header>
                 <sheet>
                     <group>
                         <field name="saham_id" readonly="1"/>
@@ -51,9 +55,9 @@
         <field name="res_model">saat.portofolio</field>
         <field name="view_mode">list,form</field>
         <field name="help" type="html">
-            <p class="o_view_nocontent_smiling_face">
-                Klik <b>Rekalkulasi</b> (menu Form) untuk memperbarui posisi dari transaksi.
-            </p>
+            <p class="o_view_nocontent_smiling_face">Portofolio dihitung dari seluruh transaksi.
+            Untuk memperbarui: klik salah satu baris portofolio, lalu tekan tombol
+            <b>Rekalkulasi</b> di atas form. (Belum ada baris? Tambah transaksi dulu di menu Transaksi.)</p>
         </field>
     </record>