SP500 ETF lower than march all-time high?!?! : eupersonalfinance

Can anybody explain why the ETF that I am buying (Ishares core SP500 accumulating) on german Xetra exchange (ticker SXR8) is now ar 285EUR /share, with the sp500 index at 3380 today, when in march the index was at same number, but the ETF was at 310 EUR/share??? What am I missing here?
Thank you

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