Hi, I found issue in YAHOO data too. Selecting my own portfolio for the markowitz optimization I received this portfolio re-balancing suggestion
Test: mpMVO portfolio 2011..2016 X57E.MI: 2 Contracts at 234$ X710.MI: 17 Contracts at 256$ X105.MI: 28 Contracts at 278$ X15E.MI: 4 Contracts at 337$ CSBGE0.MI: 66 Contracts at 156$
while the first 4 ETF prices are corrects the price of CSBGE0.MI is wrong as you can see from the pic. I do not understand where the issue is and I can not estimate which is the impact on the system.
