NMX is supposed to be priced tonite... but with the anticipation, I can't even imagine what it will actually open at. You can trade it now on some brokerages (that is, it's open for trade, with no price).
For those ready to hop in 'at any price'... I'd be a bit wary of doing that. In 1999, the IPO's often CRUSHED people at the opening from all the naive people placing market orders. I've seen that happen to a lot of people, and the losses in some cases were 300%.
In this bull market, it would not be wise to 'buy at any price' with only 6 mil shares out and the whole world waiting for the open...