Stock prices return graph

Hi CharlesRondo,

In your scenario, you may need three or more date tables due to the start dates are different and independent. Please check out the demo in the attachment. Three measures are like below. (Please note: only F and GM are the same with your requirements here. You can adjust the FCA yourself.)

F =
VAR minDate =
    CALCULATE ( MIN ( Table1[Timestamp] ), ALLSELECTED ( Table1[Timestamp] ) )
RETURN
    IF (
        MIN ( Table1[Timestamp] ) = minDate,
        0,
        DIVIDE (
            SUM ( Table1[Trade Close] ),
            CALCULATE ( SUM ( Table1[Trade Close] ), 'Table1'[Timestamp] = minDate )
        )
            - 1
    )

GM =
VAR minDate =
    CALCULATE ( MIN ( 'Calendar'[Date] ), ALLSELECTED ( 'Calendar'[Date] ) )
RETURN
    IF (
        MIN ( Table1[Timestamp] ) <= minDate,
        0,
        DIVIDE (
            SUM ( Table1[Trade Close .1] ),
            CALCULATE ( SUM ( Table1[Trade Close .1] ), 'Table1'[Timestamp] = minDate )
        )
            - 1
    )

FCA =
VAR minDate =
    CALCULATE ( MIN ( Table1[Timestamp] ), ALLSELECTED ( Table1[Timestamp] ) )
RETURN
    IF (
        MIN ( Table1[Timestamp] ) = minDate,
        0,
        DIVIDE (
            SUM ( Table1[Trade Close .2] ),
            CALCULATE ( SUM ( Table1[Trade Close .2] ), 'Table1'[Timestamp] = minDate )
        )
            - 1
    )

Best Regards,

Dale