Well...that party couldn't last forever...just got an email from IB saying they're changing to Fed Funds as the benchmark from LIBOR. Obviously LIBOR had better rates. http://www.ny.frb.org/markets/omo/dmm/fedfundsdata.cfm http://individuals.interactivebrokers.com/en/accounts/fees/monthlyInterestRates.php?ib_entity=llc Some truly bizarre divergences that AREN'T in our favor. EG. 8/10 ff=4.68 LIBOR 5.9 Extreme example...the LIBOR is, on average, 10 BP better than FF.