A corporate treasurer tells you that he has just negotiated a five-year loan at a competitive fixed rate of interest of $5.2 \%$. The treasurer explains that he achieved the $5.2 \%$ rate by borrowing at six-month LIBOR plus 150 basis points and swapping LIBOR for $3.7 \%$. He goes on to say that this was possible because his company has a comparative advantage in the floating-rate market. What has the treasurer overlooked?