Buena tarde Williams te comparto un query que espero que te sirva, donde debes poner el codigo de tu almacen y la fecha final que quieres ver tu stock.
SELECT T0.[ItemCode]'CODIGO SAP',
(SELECT (SUM(Y.InQty)-SUM(Y.OutQty))
FROM OINM Y WHERE Y.ItemCode = T2.ItemCode AND Y.Warehouse = T1.WhsCode AND Y.DocDate BETWEEN '20130101' AND '20140421') 'STOCK', T1.[WhsCode]'BODEGA', T1.WHSNAME'NOMBRE BODEGA', (SELECT (SUM(Y.TransValue))
FROM OINM Y WHERE Y.ItemCode = T2.ItemCode AND Y.Warehouse = T1.WhsCode AND Y.DocDate BETWEEN '20130101' AND '20140421')'Valor Acumulado'
FROM OITW T0
INNER JOIN OWHS T1 ON T0.WhsCode = T1.WhsCode
INNER JOIN OITM T2 ON T0.ItemCode = T2.ItemCode
INNER JOIN OMRC T3 ON T2.FIRMCODE=T3.FIRMCODE
WHERE (SELECT (SUM(Y.InQty)-SUM(Y.OutQty)) FROM OINM Y WHERE Y.ItemCode = T2.ItemCode AND Y.Warehouse = T1.WhsCode AND Y.DocDate BETWEEN '20130101' AND '20140421' and (t0.whscode ='MP' )) != '0'
ORDER BY T0.[WhsCode], T0.[ItemCode]
Saludos cordiales