It didn't make sense that this yield differential would persist in these very similar securities.

FORBES: Archimedes on Wall Street

The prospect of a widening yield differential has boosted the appeal to the single currency despite the backdrop of simmering sovereign debt turmoil.

FORBES: IB FX Brief: Positive Jobs Report Boosts Dollar, Risk Appetite Grows Friday

The yield differential between the two is pretty tight right now, and bank loans are being lauded for their better prospects in a down market.

FORBES: Connect