get value by Category using STARTOFYEAR

Dear,
I'm trying to calculate the annual profitability of IndexKey 2, using the most recent value and the first value of the year. But the variable StartValue is ignoring the filter (FatIndexHistoricalData[IndexKey]=2) and returning the value of index 1 (DateKey 20190102). Can someone help me please?

Table:

Column:

Date = DATE(LEFT(FatIndexHistoricalData[DateKey],4),MID(FatIndexHistoricalData[DateKey],5,2),RIGHT(FatIndexHistoricalData[DateKey],2))

Measure:

YTD Profit Index 2 = 

    VAR LastValue = 
        CALCULATE(
            MAX(FatIndexHistoricalData[Value]),
            FILTER(FatIndexHistoricalData,FatIndexHistoricalData[Date]=MAX(FatIndexHistoricalData[Date])&&FatIndexHistoricalData[IndexKey]=2) 
        )

    VAR StartValue = //91840.8
        CALCULATE(
           MAX(FatIndexHistoricalData[Value]),
           FILTER(FatIndexHistoricalData,FatIndexHistoricalData[Date]=STARTOFYEAR(FatIndexHistoricalData[Date])&&FatIndexHistoricalData[IndexKey]=2) // 2 - IBOVESPA
        )

RETURN (LastValue / StartValue) - 1) * 100)

thank you,

Portes, Leo