An executive at Bank of New York Mellon Corp. said he advocates a 50/30/20 portfolio split. Jose Minaya said that markets are more sophisticated, so further diversification is needed. He said he thinks AI can be used to manage and build portfolios. Forget 60/40: The global head of investments and wealth at Bank of New York Mellon Corp has said you should balance your portfolio 50/30/20. Jose Minaya said the popular approach has generally been 60% stocks and 40% bonds or 70% and 30%, Jose Minaya to ...