If they are already hashing it may be more than 1 weeks worth
That would certainly be nice. But 5th for a week at this difficulty would be just ~30 BTC a day, 213BTC in 7 days. Over 10 million shares that comes out to 0.0000213/share, minus the 30% is 0.00001493 btc/share.
At 0.0035, that comes out to 0.4% weekly yield, or non-compounding annualized yeild 22%. Or, put another way a 4.5 price/annual dividend ratio. Compared to ASICMiner's 2.5, or 40% yield (last time I looked)
Obviously most of the share's value would still be from expected growth to 50Th/s over the next month, and 200-300 by the end of the year. Hopefully we won't see crazy growth from all the KnC's hitting the network.
The irony here is that I have a KnC order, but I'd probably make more money if they're delayed a month