Gregg Abella, a money manager in New Jersey, wasn’t expecting the flood of phone calls he got from clients this past week. “Suddenly people are saying to us, ‘Wow, do you think it’s a good time for us to add bonds?’”

It’s something of a vindication for Abella. He’s been, in his words, “banging the gong” for bonds — and asset diversification, more broadly — for years. This was long a decidedly out-of-favor recommendation. Until, that is, stocks started to tumble this month. Quickly, demand for the safety of debt soared, driving 10-year Treasury yields at one point early last week to the lowest levels since mid-2023.