I too find it hard to believe no one else is in this, but then again, when you look at the b/a spreads, the liquidity is questionable.
I have been a holder of RDR, then subsequently RIF. I have been in and out a few times, with an average gain of 15%-20% each time. Currently I am for 128 shares (by no means a large holding) but am up 13% and have been steadily climbing each way. I would be willing to load up on this if the spreads were tighter and the volume was a little larger as well. Beside the liquidity issue though, I feel this is the best performing, strongest position in my portfolio.