📈 Chart of the Week 7/26/2026 By Michael Allison, CFA When Bonds Stop Helping The case for a 60/40 stock and bond portfolio largely rests on one assumption: when stocks fall, bonds rise and cushion the blow. This week’s Chart shows how conditional that assumption really is. It shows the rolling 24-month correlation between stocks and bonds going back to 1975. Above zero, the two move together. Below zero, they offset each other, which is the behavior a classic 60/40 portfolio is counting...