The Duchossis-backed computer networking firm is looking to raise up to $125m when it floats.

US-based network computing company InfoBlox filed for an initial public offering (IPO) that could raise up to $125m, on Friday, with the precise number of shares to be offered and the pricing still to be confirmed.

Shareholders in InfoBlox include Duchossois Technology Partners, an investment subsidiary of the diversified Duchossis group of companies, which currently holds 7.8% of the shares.

The largest institutional shareholder in InfoBlox is venture capital (VC) firm Sequoia Capital, which holds 28.9%, while additional…