From 0b588219af156c2e0f00a69ccf5f3a63ea70e679 Mon Sep 17 00:00:00 2001
From: Eddie Hebert <ehebert@quantopian.com>
Date: Thu, 31 Dec 2015 15:18:03 -0500
Subject: [PATCH] Fix spelling error.

---
 zipline/finance/performance/tracker.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zipline/finance/performance/tracker.py b/zipline/finance/performance/tracker.py
index a6cf6bf0..6cfadb19 100644
--- a/zipline/finance/performance/tracker.py
+++ b/zipline/finance/performance/tracker.py
@@ -138,7 +138,7 @@ class PerformanceTracker(object):
             # period
             keep_transactions=False,
             keep_orders=False,
-            # don't serialize positions for cumualtive period
+            # don't serialize positions for cumulative period
             serialize_positions=False,
             asset_finder=self.env.asset_finder,
         )