Fiber optic network provider Zayo Group files for an IPO that could raise $500 million

Zayo Group Holdings, a national provider of fiber optic bandwidth infrastructure and colocation services, filed on Wednesday with the SEC to raise up to $100 million in an initial public offering, although the deal size is likely a placeholder. We estimate the company could raise $500 million or more.

The Boulder, CO-based company was founded in 2007 and booked $1.1 billion in sales for the 12 months ended March 31, 2014. Morgan Stanley, Barclays and Goldman Sachs are the joint bookrunners on the deal. No pricing terms were disclosed.