A REIT that balances out the pay fixed/recv libor swap book with a pay libor/recv fixed. I think OAKS may have done this on the swaption side.. but they have a heavy swap book; so it's akin to writing calls on a very large long position.
I've wrestled with OAKS and owned it a few times but the low volume turns me off to it. Try to buy/sell 500 shares and they trade you 1 share or maybe 100 and then you sit for hours a penny away from your order. ORC is a bit better and that's what I'm holding currently.