Jay Hatfield | Source | Co-Founder, CEO & Portfolio Manager at Infrastructure Capital Advisors

The commodity market can get out of whack in low-volume times, and stocks aren't necessarily going to follow, because it's completely irrational.

In a market like this, in a dramatic sell-off, the rotational effects will be higher than the interest rate effect.

Straight preferred stock funds without other equities are fixed-income securities with a low correlation to the stock market.