Have you looked at

www.bitfunder.com  ?

I recently invested a bit in the "IceDrillASIC" mining IPO.
[Forum discussion here: https://bitcointalk.org/index.php?topic=269216.0 ]

This project seems legit, but I think there is some risk involved because it's hard to say how profitably ASIC mining will be in Novmember, when the mine is supposed to be online. The shares are being released in batches. I believe there are still some IPO shares available , at a slightly higher price from the initial offering.

There are other mining projects on BitFunder as well.