RE:RE:DFN in realtime @ $15.22 UNIT NAVI was wondering the same thing and poked around on Quadravest's site to see if I could figure it out. I think that you must be right.
The thing about DF is that the payout history has not been very good. Only $14.80 since December 06 and no special distributions. They didn't pay on 60 months. DFN has a much better payout history and probably deserves the premium.