A holding company needs a logo design

Want to win a job like this?
This customer received 125 logo designs from 55 designers. They chose this logo design from Enzzok as the winning design.
Join for free Find Design JobsLogo Design Brief
We need a logo design for a small investing company that hold shares in different firms and industries.
The company name is "Z - corporation" ltd. or "Z corp."
We expect a formal , stylish logo.
We would like to emphasize on the Z letter.
You can choose between implementing "Corporation" inside the logo or as a bottom text under the logo.
The colours should be not more than two. You can choose between dark blue, grey, black and white.
Updates
Project Deadline Extended
Added Monday, April 14, 2014
Target Market(s)
Banks, Lawyers, Accountants, Auditors and etc.
Industry/Entity Type
It Company
Font styles to use
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.