The thinning spread between returns from stocks and bonds is set to bring the 60/40 portfolio strategy back in favor.
The Fed's move to tighten monetary policy at the fastest pace in decades pumped up bond yields after nearly two years of near-zero interest rates.
On the other hand, "during a recession, yields will fall and Treasury bond prices will rise," said Roberts.
While the economic downturn would hit stock returns, drop in bond yields should provide some relief in such a scenario, according to analysts.
"For me, the best risk-reward portfolio in this environment for now is long duration Treasury bonds, and deep value, dividend equities," Roberts said.