diff --git a/CybosHelper.cs b/CybosHelper.cs
index e7df72d..85d06af 100644
--- a/CybosHelper.cs
+++ b/CybosHelper.cs
@@ -105,6 +105,27 @@ namespace VICrawlerNS
 			m_Listener.OnReceivedEvent(uiTime, strCode, uiEventCode, strDesc, cUpDown=='U');
 		}
 
+		int GetCallUnitValue(int iValue)
+		{
+			int iUnit = 1;
+			if(iValue < 1000)
+				iUnit = 1;
+			else if(iValue < 5000)
+				iUnit = 5;
+			else if(iValue < 10000)
+				iUnit = 10;
+			else if(iValue < 50000)
+				iUnit = 50;
+			else if(iValue < 100000)
+				iUnit = 100;
+			else if(iValue < 500000)
+				iUnit = 500;
+			else
+				iUnit = 1000;
+
+			return (iValue/iUnit)*iUnit;
+		}
+
 		public void Buy(CodeList.CODE_VALUE Code, int iBuyPrice)
 		{
 			try
@@ -113,8 +134,8 @@ namespace VICrawlerNS
 				CPStockMst.SetInputValue(0, Code.m_strCode);
 				CPStockMst.BlockRequest2(0);
 				int iCurPrice = CPStockMst.GetHeaderValue(11);
-				iCurPrice = (int)(iCurPrice*1.015);
-				int iCount = iBuyPrice/iCurPrice;
+				int iCallValue = GetCallUnitValue((int)(iCurPrice*1.015));
+				int iCount = iBuyPrice/iCallValue;
 
 				CPTRADELib.CpTd0311 CP0311 = new CPTRADELib.CpTd0311();
 				CP0311.SetInputValue(0, 2);
@@ -122,12 +143,12 @@ namespace VICrawlerNS
 				CP0311.SetInputValue(2, Config.GetSubAccount());
 				CP0311.SetInputValue(3, Code.m_strCode);
 				CP0311.SetInputValue(4, iCount);
-				CP0311.SetInputValue(5, iCurPrice);
+				CP0311.SetInputValue(5, iCallValue);
 				CP0311.SetInputValue(7, "01");
 				CP0311.SetInputValue(8, "01");
 				CP0311.BlockRequest2(1);
 
-				Util.Log(Util.LOG_TYPE.BUY, string.Format("code:{0} {1}주 현재가 {2}원, 지정가 매수", Code.ToString(), iCount, iCurPrice));
+				Util.Log(Util.LOG_TYPE.BUY, string.Format("code:{0} {1}주 현재가 {2}원, 지정가 {3} IOC 매수", Code.ToString(), iCount, iCurPrice, iCallValue));
 			}
 			catch(Exception ex)
 			{