As default risk is the primary driver of high-yield corporate bond prices, as opposed to interest rate direction, when the economy expands, the risk of high-yield corporate bonds defaulting is reduced and this is reflected in lower volatility.
According to Morningstar, Bent's Primary Fund had a 12-month trailing yield of 4.04%, versus a 2.75% average among more than 2, 100 money market funds tracked by Morningstar, making it the highest yielding fund in the category.