How can I bring yesterday closing as today opening using below query?

Date        Product OpeningQty	ArrivedQty	IssuedQty	ClosingQty

01-Oct-2015	A	100		10		12		098
01-Oct-2015	B	120		12		04		128
01-Oct-2015	C	140		14		06		148
01-Oct-2015	D	160		16		08		168

02-Oct-2015	A	098		18		00		116
02-Oct-2015	B	128		20		12		136
02-Oct-2015	C	148		00		00		148
02-Oct-2015	D	168		00		00		168

03-Oct-2015	A	116		00		00		116
03-Oct-2015	B	136		00		00		136
03-Oct-2015	C	148		22		14		156
03-Oct-2015	D	168		24		16		176

<pre>--Inventory Ledger Developed by  Gaurav for Baskin Robin

SET NOCOUNT ON;
SET ANSI_WARNINGS OFF;
SET QUOTED_IDENTIFIER OFF;

Declare @ReportType varchar(20)
Set @ReportType='WithDimensions'
Declare @DateFrom DateTime
Set @DateFrom='2017-01-02'
Declare @DateTo DateTime
Set @DateTo='2017-01-03'




Select
[Posting Date],
[Item No],
[Item Name],
SUM(Opening) as Opening ,
SUM([In Quantity]) as [In Quantity],
-SUM([Out Quantity]) as [Out Quantity],
SUM([Closing]) as [Closing]
from(

select 
 ILE.[Posting Date],
DATEDIFF(D,@DateFrom,@DateTo)Days,ILE.[Location Code]as [Location Code],
ILE.[Primary Customer No_]as [Customer No],
Item.No_ as [Item No],
Item.[Description]+' '+Item.[Description 2] as [Item Name],
ILE.[Location Code] as [Dimension1],
Case when Item.Blocked=1 then 'Non Active'
else 'Active' end as Status,
case when cast(ILE.Quantity as Numeric(19,6))>0 and ILE.[Posting Date] between @DateFrom and @DateTo 
then cast(ILE.Quantity as Numeric(19,6)) else 0 end AS [In Quantity],
case when cast(ILE.Quantity as Numeric(19,6))<0 and ILE.[Posting Date] between @DateFrom and @DateTo
then -cast(ILE.Quantity as Numeric(19,6)) else 0 end AS [Out Quantity],
case when ILE.[Posting Date] < @DateFrom then cast(ILE.Quantity as Numeric(19,6)) else 0 end AS [Opening],

case when ILE.[Posting Date] <= @DateTo then cast(ILE.Quantity as Numeric(19,6)) else 0 end AS [Closing],
Item.[Base Unit of Measure] as [Base UOM]
from [Snowman Logistics Limited$Item] as Item
inner join [Snowman Logistics Limited$Item Ledger Entry] ILE
on Item.No_=ILE.[Item No_]
where ILE.[Posting Date] <=@DateTo and ILE.[Primary Customer No_]
  in('VRNP000016','MUMP000056','VRNP000040','MMBP000094','CHNP000279') and [Item No_]in('B1001020','B1001163')
) asp
group by
[Item No],[Location Code],
[Item Name]
,[Posting Date]
order by [Item No],[Posting Date]