diff --git a/btc-portfolio/backend/app/main.py b/btc-portfolio/backend/app/main.py
index b458409..b2b8aad 100644
--- a/btc-portfolio/backend/app/main.py
+++ b/btc-portfolio/backend/app/main.py
@@ -3,7 +3,7 @@ from fastapi.middleware.cors import CORSMiddleware
 from sqlalchemy import text
 
 from .database import engine, Base, SessionLocal
-from .routes import users, purchases, stats, history, admin, candles
+from .routes import users, purchases, stats, history, admin, candles, sells
 
 Base.metadata.create_all(bind=engine)
 
@@ -23,6 +23,7 @@ app.include_router(stats.router)
 app.include_router(history.router)
 app.include_router(admin.router, prefix="/admin")
 app.include_router(candles.router)
+app.include_router(sells.router)
 
 
 @app.on_event("startup")
diff --git a/btc-portfolio/backend/app/models.py b/btc-portfolio/backend/app/models.py
index 30959f7..a40a218 100644
--- a/btc-portfolio/backend/app/models.py
+++ b/btc-portfolio/backend/app/models.py
@@ -13,6 +13,7 @@ class User(Base):
     is_admin = Column(Boolean, default=False, nullable=False, server_default='0')
 
     purchases = relationship("Purchase", back_populates="owner", cascade="all, delete")
+    sells = relationship("Sell", back_populates="owner", cascade="all, delete")
 
 
 class Purchase(Base):
@@ -27,6 +28,18 @@ class Purchase(Base):
     owner = relationship("User", back_populates="purchases")
 
 
+class Sell(Base):
+    __tablename__ = "sells"
+
+    id = Column(Integer, primary_key=True, index=True)
+    btc_amount = Column(Float, nullable=False)
+    price_eur = Column(Float, nullable=False)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+
+    owner = relationship("User", back_populates="sells")
+
+
 class OHLCCandle(Base):
     __tablename__ = "ohlc_candles"
 
diff --git a/btc-portfolio/backend/app/routes/purchases.py b/btc-portfolio/backend/app/routes/purchases.py
index f8c3c65..454ccd1 100644
--- a/btc-portfolio/backend/app/routes/purchases.py
+++ b/btc-portfolio/backend/app/routes/purchases.py
@@ -1,7 +1,7 @@
 from fastapi import APIRouter, Depends, HTTPException, status
 from sqlalchemy.orm import Session
 from pydantic import BaseModel, Field
-from typing import List
+from typing import List, Optional
 from datetime import datetime
 
 from ..database import get_db
@@ -14,6 +14,7 @@ router = APIRouter()
 class PurchaseCreate(BaseModel):
     amount_eur: float = Field(gt=0, le=10_000_000)
     price_eur: float = Field(gt=0, le=10_000_000)
+    created_at: Optional[datetime] = None
 
 
 class PurchaseUpdate(BaseModel):
@@ -54,6 +55,7 @@ def add_purchase(
     purchase = models.Purchase(
         amount_eur=purchase_in.amount_eur,
         price_eur=purchase_in.price_eur,
+        created_at=purchase_in.created_at or datetime.utcnow(),
         user_id=current_user.id,
     )
     db.add(purchase)
diff --git a/btc-portfolio/backend/app/routes/sells.py b/btc-portfolio/backend/app/routes/sells.py
new file mode 100644
index 0000000..ba3d070
--- /dev/null
+++ b/btc-portfolio/backend/app/routes/sells.py
@@ -0,0 +1,101 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from pydantic import BaseModel, Field
+from typing import List, Optional
+from datetime import datetime
+
+from ..database import get_db
+from .. import models
+from ..dependencies import get_current_user
+
+router = APIRouter()
+
+
+class SellCreate(BaseModel):
+    btc_amount: float = Field(gt=0, le=21_000_000)
+    price_eur: float = Field(gt=0, le=10_000_000)
+    created_at: Optional[datetime] = None
+
+
+class SellUpdate(BaseModel):
+    btc_amount: float = Field(gt=0, le=21_000_000)
+    price_eur: float = Field(gt=0, le=10_000_000)
+    created_at: datetime
+
+
+class SellOut(BaseModel):
+    id: int
+    btc_amount: float
+    price_eur: float
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+@router.get("/sells", response_model=List[SellOut])
+def list_sells(
+    db: Session = Depends(get_db),
+    current_user: models.User = Depends(get_current_user),
+):
+    return (
+        db.query(models.Sell)
+        .filter(models.Sell.user_id == current_user.id)
+        .order_by(models.Sell.created_at)
+        .all()
+    )
+
+
+@router.post("/sells", response_model=SellOut, status_code=status.HTTP_201_CREATED)
+def add_sell(
+    sell_in: SellCreate,
+    db: Session = Depends(get_db),
+    current_user: models.User = Depends(get_current_user),
+):
+    sell = models.Sell(
+        btc_amount=sell_in.btc_amount,
+        price_eur=sell_in.price_eur,
+        created_at=sell_in.created_at or datetime.utcnow(),
+        user_id=current_user.id,
+    )
+    db.add(sell)
+    db.commit()
+    db.refresh(sell)
+    return sell
+
+
+@router.put("/sells/{sell_id}", response_model=SellOut)
+def update_sell(
+    sell_id: int,
+    sell_in: SellUpdate,
+    db: Session = Depends(get_db),
+    current_user: models.User = Depends(get_current_user),
+):
+    sell = db.query(models.Sell).filter(
+        models.Sell.id == sell_id,
+        models.Sell.user_id == current_user.id,
+    ).first()
+    if not sell:
+        raise HTTPException(status_code=404, detail="Sell not found")
+    sell.btc_amount = sell_in.btc_amount
+    sell.price_eur = sell_in.price_eur
+    sell.created_at = sell_in.created_at
+    db.commit()
+    db.refresh(sell)
+    return sell
+
+
+@router.delete("/sells/{sell_id}", status_code=status.HTTP_204_NO_CONTENT)
+def delete_sell(
+    sell_id: int,
+    db: Session = Depends(get_db),
+    current_user: models.User = Depends(get_current_user),
+):
+    sell = db.query(models.Sell).filter(
+        models.Sell.id == sell_id,
+        models.Sell.user_id == current_user.id,
+    ).first()
+    if not sell:
+        raise HTTPException(status_code=404, detail="Sell not found")
+    db.delete(sell)
+    db.commit()
diff --git a/btc-portfolio/backend/app/routes/stats.py b/btc-portfolio/backend/app/routes/stats.py
index b619099..ae263e3 100644
--- a/btc-portfolio/backend/app/routes/stats.py
+++ b/btc-portfolio/backend/app/routes/stats.py
@@ -15,17 +15,24 @@ def get_stats(
     current_user: models.User = Depends(get_current_user),
 ):
     purchases = db.query(models.Purchase).filter(models.Purchase.user_id == current_user.id).all()
+    sells = db.query(models.Sell).filter(models.Sell.user_id == current_user.id).all()
 
     total_invested = sum(p.amount_eur for p in purchases)
-    total_btc = sum(p.amount_eur / p.price_eur for p in purchases) if purchases else 0.0
-    average_price = total_invested / total_btc if total_btc > 0 else 0.0
+    total_btc_bought = sum(p.amount_eur / p.price_eur for p in purchases) if purchases else 0.0
+
+    total_btc_sold = sum(s.btc_amount for s in sells)
+    proceeds_eur = sum(s.btc_amount * s.price_eur for s in sells)
+
+    net_btc = total_btc_bought - total_btc_sold
+    net_invested = total_invested - proceeds_eur
+    average_price = net_invested / net_btc if net_btc > 0 else 0.0
     current_price = get_btc_price_eur()
-    portfolio_value = total_btc * current_price
-    profit_loss = portfolio_value - total_invested
+    portfolio_value = net_btc * current_price
+    profit_loss = portfolio_value - net_invested
 
     return {
-        "total_invested": round(total_invested, 2),
-        "total_btc": round(total_btc, 8),
+        "total_invested": round(net_invested, 2),
+        "total_btc": round(net_btc, 8),
         "average_price": round(average_price, 2),
         "current_price": round(current_price, 2),
         "portfolio_value": round(portfolio_value, 2),
diff --git a/btc-portfolio/frontend/src/components/AddPurchase.js b/btc-portfolio/frontend/src/components/AddPurchase.js
index a4c1add..9aa7d1a 100644
--- a/btc-portfolio/frontend/src/components/AddPurchase.js
+++ b/btc-portfolio/frontend/src/components/AddPurchase.js
@@ -12,6 +12,7 @@ const styles = {
 };
 
 export default function AddPurchase({ onAdded }) {
+  const [purchaseDate, setPurchaseDate] = useState(new Date().toISOString().split('T')[0]);
   const [amountEur, setAmountEur] = useState('');
   const [priceEur, setPriceEur] = useState('');
   const [error, setError] = useState('');
@@ -30,12 +31,14 @@ export default function AddPurchase({ onAdded }) {
         body: JSON.stringify({
           amount_eur: parseFloat(amountEur),
           price_eur: parseFloat(priceEur),
+          created_at: new Date(purchaseDate + 'T12:00:00').toISOString(),
         }),
       });
       if (!res.ok) {
         setError('Failed to add purchase');
         return;
       }
+      setPurchaseDate(new Date().toISOString().split('T')[0]);
       setAmountEur('');
       setPriceEur('');
       onAdded();
@@ -50,6 +53,13 @@ export default function AddPurchase({ onAdded }) {
       <div style={styles.title}>Add Purchase</div>
       <form onSubmit={handleSubmit}>
         <div style={styles.row}>
+          <input
+            style={styles.input}
+            type="date"
+            value={purchaseDate}
+            onChange={e => setPurchaseDate(e.target.value)}
+            required
+          />
           <input
             style={styles.input}
             type="number"
diff --git a/btc-portfolio/frontend/src/components/AddSell.js b/btc-portfolio/frontend/src/components/AddSell.js
new file mode 100644
index 0000000..1cac66e
--- /dev/null
+++ b/btc-portfolio/frontend/src/components/AddSell.js
@@ -0,0 +1,87 @@
+import React, { useState } from 'react';
+
+const API = process.env.REACT_APP_API_URL || 'http://localhost:8000';
+
+const styles = {
+  card: { background: '#1a1a1a', padding: '1.5rem', borderRadius: '12px', border: '1px solid #333', marginBottom: '1.5rem' },
+  title: { fontSize: '1.1rem', fontWeight: 700, marginBottom: '1rem', color: '#f7931a' },
+  row: { display: 'flex', gap: '0.75rem', flexWrap: 'wrap' },
+  input: { flex: 1, minWidth: '140px', padding: '0.65rem', background: '#2a2a2a', border: '1px solid #444', borderRadius: '8px', color: '#e0e0e0', fontSize: '1rem' },
+  button: { padding: '0.65rem 1.5rem', background: '#f7931a', color: '#000', border: 'none', borderRadius: '8px', fontWeight: 700, cursor: 'pointer' },
+  error: { color: '#ff6b6b', marginTop: '0.5rem', fontSize: '0.9rem' },
+};
+
+export default function AddSell({ onAdded }) {
+  const [sellDate, setSellDate] = useState(new Date().toISOString().split('T')[0]);
+  const [btcAmount, setBtcAmount] = useState('');
+  const [priceEur, setPriceEur] = useState('');
+  const [error, setError] = useState('');
+
+  const handleSubmit = async (e) => {
+    e.preventDefault();
+    setError('');
+    const token = localStorage.getItem('token');
+    try {
+      const res = await fetch(`${API}/sells`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+          Authorization: `Bearer ${token}`,
+        },
+        body: JSON.stringify({
+          btc_amount: parseFloat(btcAmount),
+          price_eur: parseFloat(priceEur),
+          created_at: new Date(sellDate + 'T12:00:00').toISOString(),
+        }),
+      });
+      if (!res.ok) {
+        setError('Failed to add sell');
+        return;
+      }
+      setSellDate(new Date().toISOString().split('T')[0]);
+      setBtcAmount('');
+      setPriceEur('');
+      onAdded();
+    } catch (err) {
+      console.error('AddSell network error:', err);
+      setError('Network error');
+    }
+  };
+
+  return (
+    <div style={styles.card}>
+      <div style={styles.title}>Add Sell</div>
+      <form onSubmit={handleSubmit}>
+        <div style={styles.row}>
+          <input
+            style={styles.input}
+            type="date"
+            value={sellDate}
+            onChange={e => setSellDate(e.target.value)}
+            required
+          />
+          <input
+            style={styles.input}
+            type="number"
+            step="any"
+            placeholder="BTC Amount"
+            value={btcAmount}
+            onChange={e => setBtcAmount(e.target.value)}
+            required
+          />
+          <input
+            style={styles.input}
+            type="number"
+            step="any"
+            placeholder="BTC Price (EUR)"
+            value={priceEur}
+            onChange={e => setPriceEur(e.target.value)}
+            required
+          />
+          <button style={styles.button} type="submit">Add</button>
+        </div>
+        {error && <div style={styles.error}>{error}</div>}
+      </form>
+    </div>
+  );
+}
diff --git a/btc-portfolio/frontend/src/components/PortfolioChart.js b/btc-portfolio/frontend/src/components/PortfolioChart.js
index 628e70c..b02846c 100644
--- a/btc-portfolio/frontend/src/components/PortfolioChart.js
+++ b/btc-portfolio/frontend/src/components/PortfolioChart.js
@@ -42,12 +42,13 @@ function priceOn(date, priceMap, currentPrice, isToday, sortedPurchases) {
   return fallback;
 }
 
-export default function PortfolioChart({ purchases, stats, btcHistory }) {
+export default function PortfolioChart({ purchases, sells, stats, btcHistory }) {
   const chartRef = useRef(null);
 
   if (!purchases || purchases.length === 0) return null;
 
   const sorted = [...purchases].sort((a, b) => new Date(a.created_at) - new Date(b.created_at));
+  const sortedSells = [...(sells || [])].sort((a, b) => new Date(a.created_at) - new Date(b.created_at));
   const today = new Date();
   today.setHours(0, 0, 0, 0);
 
@@ -89,6 +90,14 @@ export default function PortfolioChart({ purchases, stats, btcHistory }) {
         cumInvested += p.amount_eur;
       }
     });
+    sortedSells.forEach(s => {
+      const sDate = new Date(s.created_at);
+      sDate.setHours(0, 0, 0, 0);
+      if (sDate <= date) {
+        cumBtc -= s.btc_amount;
+        cumInvested -= s.btc_amount * s.price_eur;
+      }
+    });
 
     if (cumBtc === 0) return; // no purchases yet at this date
 
diff --git a/btc-portfolio/frontend/src/components/SellList.js b/btc-portfolio/frontend/src/components/SellList.js
new file mode 100644
index 0000000..1940747
--- /dev/null
+++ b/btc-portfolio/frontend/src/components/SellList.js
@@ -0,0 +1,119 @@
+import React, { useState } from 'react';
+
+const API = process.env.REACT_APP_API_URL || 'http://localhost:8000';
+
+const styles = {
+  card: { background: '#1a1a1a', padding: '1.5rem', borderRadius: '12px', border: '1px solid #333', marginBottom: '1.5rem' },
+  title: { fontSize: '1.1rem', fontWeight: 700, marginBottom: '1rem', color: '#f7931a' },
+  table: { width: '100%', borderCollapse: 'collapse' },
+  th: { textAlign: 'left', padding: '0.5rem 0.75rem', borderBottom: '1px solid #333', color: '#888', fontSize: '0.85rem' },
+  td: { padding: '0.6rem 0.75rem', borderBottom: '1px solid #222', fontSize: '0.95rem' },
+  input: { background: '#2a2a2a', border: '1px solid #555', borderRadius: '6px', color: '#e0e0e0', padding: '0.3rem 0.5rem', fontSize: '0.9rem', width: '100%' },
+  editBtn: { background: 'none', border: '1px solid #555', color: '#4fc3f7', borderRadius: '6px', padding: '0.25rem 0.6rem', cursor: 'pointer', fontSize: '0.85rem', marginRight: '0.4rem' },
+  saveBtn: { background: 'none', border: '1px solid #6bff8e', color: '#6bff8e', borderRadius: '6px', padding: '0.25rem 0.6rem', cursor: 'pointer', fontSize: '0.85rem', marginRight: '0.4rem' },
+  cancelBtn: { background: 'none', border: '1px solid #555', color: '#aaa', borderRadius: '6px', padding: '0.25rem 0.6rem', cursor: 'pointer', fontSize: '0.85rem', marginRight: '0.4rem' },
+  deleteBtn: { background: 'none', border: '1px solid #555', color: '#ff6b6b', borderRadius: '6px', padding: '0.25rem 0.6rem', cursor: 'pointer', fontSize: '0.85rem' },
+  empty: { color: '#555', textAlign: 'center', padding: '1rem' },
+};
+
+function toDateInputValue(isoString) {
+  return isoString ? isoString.slice(0, 10) : '';
+}
+
+export default function SellList({ sells, onChanged }) {
+  const [editingId, setEditingId] = useState(null);
+  const [editForm, setEditForm] = useState({});
+
+  const token = () => localStorage.getItem('token');
+
+  const startEdit = (s) => {
+    setEditingId(s.id);
+    setEditForm({
+      btc_amount: s.btc_amount,
+      price_eur: s.price_eur,
+      created_at: toDateInputValue(s.created_at),
+    });
+  };
+
+  const cancelEdit = () => setEditingId(null);
+
+  const handleSave = async (id) => {
+    const res = await fetch(`${API}/sells/${id}`, {
+      method: 'PUT',
+      headers: { 'Content-Type': 'application/json', Authorization: `Bearer ${token()}` },
+      body: JSON.stringify({
+        btc_amount: parseFloat(editForm.btc_amount),
+        price_eur: parseFloat(editForm.price_eur),
+        created_at: new Date(editForm.created_at + 'T12:00:00').toISOString(),
+      }),
+    });
+    if (res.ok) {
+      setEditingId(null);
+      onChanged();
+    }
+  };
+
+  const handleDelete = async (id) => {
+    await fetch(`${API}/sells/${id}`, {
+      method: 'DELETE',
+      headers: { Authorization: `Bearer ${token()}` },
+    });
+    onChanged();
+  };
+
+  const set = (field) => (e) => setEditForm(f => ({ ...f, [field]: e.target.value }));
+
+  return (
+    <div style={styles.card}>
+      <div style={styles.title}>Sells</div>
+      {sells.length === 0 ? (
+        <div style={styles.empty}>No sells yet.</div>
+      ) : (
+        <table style={styles.table}>
+          <thead>
+            <tr>
+              <th style={styles.th}>Date</th>
+              <th style={styles.th}>BTC Amount</th>
+              <th style={styles.th}>Price (€/BTC)</th>
+              <th style={styles.th}>Value (€)</th>
+              <th style={styles.th}></th>
+            </tr>
+          </thead>
+          <tbody>
+            {sells.map(s => editingId === s.id ? (
+              <tr key={s.id}>
+                <td style={styles.td}>
+                  <input style={styles.input} type="date" value={editForm.created_at} onChange={set('created_at')} />
+                </td>
+                <td style={styles.td}>
+                  <input style={styles.input} type="number" step="any" value={editForm.btc_amount} onChange={set('btc_amount')} />
+                </td>
+                <td style={styles.td}>
+                  <input style={styles.input} type="number" step="any" value={editForm.price_eur} onChange={set('price_eur')} />
+                </td>
+                <td style={styles.td}>
+                  €{(parseFloat(editForm.btc_amount) * parseFloat(editForm.price_eur) || 0).toLocaleString()}
+                </td>
+                <td style={styles.td}>
+                  <button style={styles.saveBtn} onClick={() => handleSave(s.id)}>Save</button>
+                  <button style={styles.cancelBtn} onClick={cancelEdit}>Cancel</button>
+                </td>
+              </tr>
+            ) : (
+              <tr key={s.id}>
+                <td style={styles.td}>{new Date(s.created_at).toLocaleDateString('en-GB')}</td>
+                <td style={styles.td}>₿{s.btc_amount.toFixed(8)}</td>
+                <td style={styles.td}>€{s.price_eur.toLocaleString()}</td>
+                <td style={styles.td}>€{(s.btc_amount * s.price_eur).toLocaleString()}</td>
+                <td style={styles.td}>
+                  <button style={styles.editBtn} onClick={() => startEdit(s)}>Edit</button>
+                  <button style={styles.deleteBtn} onClick={() => handleDelete(s.id)}>Delete</button>
+                </td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      )}
+    </div>
+  );
+}
diff --git a/btc-portfolio/frontend/src/pages/Dashboard.js b/btc-portfolio/frontend/src/pages/Dashboard.js
index 4b3762c..c94aa4f 100644
--- a/btc-portfolio/frontend/src/pages/Dashboard.js
+++ b/btc-portfolio/frontend/src/pages/Dashboard.js
@@ -2,6 +2,8 @@ import React, { useState, useEffect, useCallback } from 'react';
 import { useNavigate, Link } from 'react-router-dom';
 import AddPurchase from '../components/AddPurchase';
 import PurchaseList from '../components/PurchaseList';
+import AddSell from '../components/AddSell';
+import SellList from '../components/SellList';
 import PortfolioChart from '../components/PortfolioChart';
 import BTCCandlestickChart from '../components/BTCCandlestickChart';
 
@@ -38,6 +40,7 @@ function StatCard({ label, value, highlight }) {
 export default function Dashboard() {
   const [stats, setStats] = useState(null);
   const [purchases, setPurchases] = useState([]);
+  const [sells, setSells] = useState([]);
   const [candles, setCandles] = useState(null);
   const [candlesAll, setCandlesAll] = useState(null);
   const [fullscreenChart, setFullscreenChart] = useState(false);
@@ -50,9 +53,10 @@ export default function Dashboard() {
 
   const fetchData = useCallback(async () => {
     try {
-      const [statsRes, purchasesRes, candlesRes] = await Promise.all([
+      const [statsRes, purchasesRes, sellsRes, candlesRes] = await Promise.all([
         fetch(`${API}/stats`,            { headers: authHeaders() }),
         fetch(`${API}/purchases`,        { headers: authHeaders() }),
+        fetch(`${API}/sells`,            { headers: authHeaders() }),
         fetch(`${API}/candles?days=365`, { headers: authHeaders() }),
       ]);
       if (statsRes.status === 401) {
@@ -62,6 +66,7 @@ export default function Dashboard() {
       }
       setStats(await statsRes.json());
       setPurchases(await purchasesRes.json());
+      setSells(await sellsRes.json());
       setCandles(await candlesRes.json());
     } catch {
       // silently fail — network may be unavailable
@@ -135,7 +140,7 @@ export default function Dashboard() {
           >{label}</button>
         ))}
       </div>
-      {(chartView === 'both' || chartView === 'portfolio') && <PortfolioChart purchases={purchases} stats={stats} btcHistory={candles?.candles ?? []} />}
+      {(chartView === 'both' || chartView === 'portfolio') && <PortfolioChart purchases={purchases} sells={sells} stats={stats} btcHistory={candles?.candles ?? []} />}
       {(chartView === 'both' || chartView === 'history') && (
         <BTCCandlestickChart
           candles={activeCandles?.candles ?? null}
@@ -147,6 +152,8 @@ export default function Dashboard() {
       )}
       <AddPurchase onAdded={fetchData} />
       <PurchaseList purchases={purchases} onChanged={fetchData} />
+      <AddSell onAdded={fetchData} />
+      <SellList sells={sells} onChanged={fetchData} />
     </div>
   );
 }