From 7585d54eb0a5f094cd95db553c8cf37dac368e4e Mon Sep 17 00:00:00 2001
From: Dmitry Maylarov <maylarov@yandex.ru>
Date: Mon, 31 Jan 2022 16:45:42 +0300
Subject: [PATCH] fix negative comms

---
 strategies.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/strategies.py b/strategies.py
index d59fc7e..b811f82 100644
--- a/strategies.py
+++ b/strategies.py
@@ -43,7 +43,7 @@ class PercentageCommisionScheme(bt.CommInfoBase):
     )
 
     def _getcommission(self, size, price, pseudoexec):
-        return size * price * self.p.commission + 4  # 290rub/month
+        return abs(size * price * self.p.commission) + 4  # 290rub/month
 
 
 class Investing(bt.Strategy):