The Roll-Up Bear: How Dan Caruso Built Zayo Into a $14B Fibre Empire

Key takeaways from the M&A Science interview with Zayo founder and former CEO Dan CarusoDealroom has a profile for this one. Try Dealroom → (Part 1):

The contrarian thesis. Founded in 2007 (originally Communication Infrastructure Investments), Zayo bet on "fibre orphans" — well-run, cash-generative single-metro and rural fibre networks held by "accidental owners" in the wake of the telecom bust, when private equity and VCs treated fibre assets as toxic.

45 acquisitions, one company. Caruso ran a buyer-led roll-up of roughly 45 deals, insisting on fast, aggressive integration — one system, one name, no side-by-side team "integration plans" — to capture synergies quickly and keep doing deals before rivals caught on.

An 8.5x return on ~$1B of equity. The roughly $1bn of equity invested was worth about $8.5bn at exit — not on an inflated multiple (~12x EBITDA), making the value creation authentic. Early investors made ~25x their money.

The AboveNet coup. Zayo's defining deal was a hostile, fully-financed all-cash unsolicited offer for AboveNet — a larger, more established public company days from a management buyout — delivered in a sealed envelope at an industry conference, prevailing because the rival LBO backers never believed a legitimate competing bid existed.

Track record beats the pitch. Caruso's blunt fundraising lesson: with no track record, a good idea is secondary — investors back proven operators. Having earlier returned 25x on the ICG take-private (which he led while recovering from double hip surgery), he raised Zayo without a roadshow.

Advice for aspiring founders. Don't start a company straight out of college — join a scaling business with a strong team, learn what success looks like, build a network, and let the thesis and relationships emerge. The same applies to would-be roll-up operators: join one first.

"The Bear." Caruso earned the nickname for his aggressive, no-tolerance-for-passengers management style. Today he channels it into pushing his team on AI fluency and community value, not just financial returns.

Value creation, not optics. Scarred by the WorldCom/Qwest era of accounting-driven "appearance of value," Caruso built Zayo to measure true, durable value — resisting board pressure to track each acquisition separately, which he argued would only sabotage synergies.

Read more: M&A Science (YouTube)