From 1183c44fad3d19e1ee56c3a4186f6cd47ce160cb Mon Sep 17 00:00:00 2001
From: Eddie Hebert <ehebert@quantopian.com>
Date: Thu, 18 Apr 2013 11:17:08 -0400
Subject: [PATCH] MAINT: Remove unused last_dt member from
 risk.RiskMetricsIterative

---
 zipline/finance/risk.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/zipline/finance/risk.py b/zipline/finance/risk.py
index 29794dd4..f68092d2 100644
--- a/zipline/finance/risk.py
+++ b/zipline/finance/risk.py
@@ -562,7 +562,6 @@ class RiskMetricsIterative(RiskMetricsBase):
         self.max_drawdown = 0
         self.current_max = -np.inf
         self.excess_returns = []
-        self.last_dt = start_date
 
     @property
     def last_return_date(self):