diff --git a/stock.py b/stock.py
new file mode 100644
index 0000000..134d200
--- /dev/null
+++ b/stock.py
@@ -0,0 +1,9 @@
+
+class Stock:
+    def __init__(self, name, shares, price):
+        self.name = name
+        self.shares = shares
+        self.price = price
+
+    def cost(self):
+        return self.shares * self.price