Create a custom column

san_21 

sorry my bad, 

create part_2 column : 

part_2 = 
1 + 'Table'[ROR]/ 100 

create mv column : 

mv = 
SWITCH(
    TRUE(),
    not ISBLANK('Table'[Market Value]) , 'Table'[Market Value],


    var date_with_lastnonblank_market_value =  
        sELECTCOLUMNS(
        LASTNONBLANK(
            FILTER(
                'Table',
                'Table'[Date]<=EARLIER('Table'[Date])
        ),
        'Table'[Market Value]
        ),'Table'[Date]
        )

    var part_2 = 
    SELECTCOLUMNS(
        WINDOW(
            0,
            ABS,
            0,
            REL ,
            FILTER(
             SUMMARIZE(
                'Table',
                 'Table'[Date],
                 'Table'[part_2]
            ) , 'Table'[Date] >=date_with_lastnonblank_market_value
            ),
            ORDERBY('Table'[Date],asc)),
        'Table'[part_2]
        )
    



    var market_value =  
    sELECTCOLUMNS(
    LASTNONBLANK(
        FILTER(
            'Table',
            'Table'[Date]<=EARLIER('Table'[Date])
    ),
    'Table'[Market Value]
    ),'Table'[Market Value]
    )


    var part_2_product =  PRODUCTX(part_2, [part_2])
    

    return    market_value * part_2_product

)

let me know if this helps 

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