Someone considering iBonds has 10k sitting idling and wants that to either hold most of its value, or gain value. They are willing to not touch it for at least

Someone considering iBonds has 10k sitting idling and wants that to either hold most of its value, or gain value. They are willing to not touch it for at least a year and also don’t want to lose more money than what you lose with the iBonds. With a volatile market like the one today, what is a safer bet? iBonds, or gambling it at the market?