Zayo attracted takeover interest from a group of investors including funds managed by Blackstone and Stonepeak Other funds are also part of the group that has expressed interest in a take-private deal for Zayo The company operates an almost 130,000-mile fiber network across North America and Europe Including debt, Zayo is valued at about $11.1 billion, according to data compiled by Bloomberg.

Zayo Group Holdings Inc. attracted takeover interest from a group of investors including funds managed by Blackstone Group LP and Stonepeak Partners LP, according to people with knowledge of the matter.

Funds managed by KKR & Co., I Squared Capital, GTCR and Charlesbank Capital Partners are also part of the group that has expressed interest in a take-private deal for Zayo, said the people, who asked not to be identified because the details aren’t public. Shares surged as much as 20 percent in New York Monday and were up 14.3 percent to $27.05 apiece at 9:46 a.m., valuing the company at $6.4 billion.