DAX: Weighted Average on Different Level of Aggregation using Netted Summarized Table

Question

I have the following test Data set, with 3 different levels of grouping. And I want to make a measure "Value WA" for Value, and the make a matrix like showing in the image after. Basically, it is the weighted average of "Value" based on "Market Value“ for the sub-categories contained in it. If it is on row of "Portfolio1", it is the WA of Index1 and Index2, and if it is on row of "Class1", it is the WA of "Portfolio1" and "Portfolio2" etc.

I had the code for measure "Value WA" at the bottom using netted SUMMARIZE. But somehow it doesn't work appropriately. I can't figure out why, but I guess it is on the last line of "RETURN SUMX(SubTable2, [Value2] * [WT2])"

Please help me with the correct approach. Thank you very much!

Date set

GroupLevel1	GroupLevel2	GroupLevel3	Market Value	Value
Class1	Portfolio1	Index1	30	3
Class1	Portfolio1	Index2	30	2
Class1	Portfolio1	Index8	30	4
Class1	Portfolio2	Index3	50	4
Class2	Portfolio3	Index4	50	6
Class2	Portfolio4	Index5	50	4
Class3	Portfolio5	Index6	200	5
Class3	Portfolio5	Index7	200	1

what I want it to look like:

Value WA = 
IF( ISFILTERED('Table'[GroupLevel3]),
    CALCULATE(SUM('Table'[Value])),
    VAR SubTable1 = 
            ADDCOLUMNS(
                SUMMARIZE('Table','Table'[GroupLevel3],'Table'[GroupLevel2],'Table'[GroupLevel1]),
                "WT3", CALCULATE(SUM('Table'[Market Value])) /
                       CALCULATE(SUM('Table'[Market Value]),
                                ALL('Table'[GroupLevel3])),
                "Value3", CALCULATE(SUM('Table'[Value])))
    VAR Val_level2 = SUMX(SubTable1, [Value3] * [WT3])
    RETURN
        IF( ISFILTERED('Table'[GroupLevel2]),
            Val_level2,
            VAR SubTable2 = ADDCOLUMNS(
                                SUMMARIZE(SubTable1,[GroupLevel2]),
                                "WT2", CALCULATE(SUM('Table'[Market Value])) /
                                       CALCULATE(SUM('Table'[Market Value]),
                                                ALL('Table'[GroupLevel2])),
                                "Value2", Val_level2)
            RETURN SUMX(SubTable2, [Value2] * [WT2])
    )
)