diff --git a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/Exchange.java b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/Exchange.java
index 9c5796a..b73f634 100644
--- a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/Exchange.java
+++ b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/engine/Exchange.java
@@ -208,7 +208,9 @@ public Transaction sell(final Share share, final Player player)
    *
    * @throws IllegalArgumentException if any parameter is null, or if player does not have enough shares.
    * */
-  public List<Transaction> sell(BigDecimal amount, final String stockSymbol, final Player player)
+  public List<Transaction> sell(BigDecimal amount,
+                                final String stockSymbol,
+                                final Player player)
           throws IllegalArgumentException {
     if (amount == null || player == null || !Validator.NOT_EMPTY.isValid(stockSymbol)) {
       throw new IllegalArgumentException("Invalid sell!");
@@ -253,7 +255,8 @@ public void advance() {
     for (Stock stock : stockMap.values()) {
       BigDecimal currentPrice = stock.getSalesPrice();
 
-      double change = (random.nextDouble() * 0.10) - 0.05;
+      double change = ((random.nextDouble() * 0.10) - 0.05) + stock.getFortune();
+      stock.setFortune(0);
       BigDecimal factor = BigDecimal.valueOf(1 + change);
 
       BigDecimal newPrice = currentPrice.multiply(factor);
diff --git a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/model/Stock.java b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/model/Stock.java
index 11a444e..1ca9664 100644
--- a/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/model/Stock.java
+++ b/src/main/java/edu/ntnu/idi/idatt2003/g40/mappe/model/Stock.java
@@ -26,6 +26,14 @@ public final class Stock {
    * */
   private final List<BigDecimal> prices = new ArrayList<>();
 
+  /**
+   * Value indicating this stocks fortune.
+   *
+   * <p>Higher fortune yields a higher
+   * increase when stock market changes price.</p>
+   * */
+  private double fortune;
+
   /**
    * Creates a new {@code Stock} with an initial sales price.
    *
@@ -42,10 +50,29 @@ public Stock(final String symbol,
     } else {
       this.symbol = symbol;
       this.company = company;
+      this.fortune = 0;
       prices.add(salesPrice);
     }
   }
 
+  /**
+   * Setter method for fortune.
+   *
+   * @param newFortune the new value to set this stocks' fortune.
+   * */
+  public void setFortune(final double newFortune) {
+    fortune = newFortune;
+  }
+
+  /**
+   * Getter method for fortune.
+   *
+   * @return fortune.
+   * */
+  public double getFortune() {
+    return fortune;
+  }
+
   /**
    * Returns the stock symbol.
    *