SDC Capital Partners Makes Minority Growth Investment in Bandwidth Infrastructure Group

Circumference Group Acquires Majority Stake in Broadband Development Group

February 5, 2026

Telecommunications

Circumference Group, an operationally focused investment firm, acquired a majority stake in Broadband Development Group (BDG), a Little Rock-based provider of fiber-based commercial broadband and managed Wi-Fi solutions for the multifamily (MDU) market. The investment is intended to support BDG’s continued expansion across high-growth markets in the Southeastern United States and Texas, accelerating growth of its wholesale business model.

Thoma Bravo Makes Strategic Minority Investment in SDC Capital Partners

October 2, 2025

Infrastructure

Thoma Bravo has made a strategic minority investment in SDC Capital Partners, a global digital infrastructure investment firm focused on data centers, fiber, wireless and cloud-services infrastructure. The investment, funded from Thoma Bravo's balance sheet, is intended to support SDC's platform expansion as demand for AI, cloud computing and advanced technologies drives increased need for digital infrastructure.

SDC Capital Partners Acquires Majority Interest in Cityside Networks

February 23, 2023

Telecommunications

Funds managed by SDC Capital Partners have acquired a majority interest in Cityside Networks, a fiber-to-the-premise (FTTP) provider headquartered in Orange County (Irvine), California. The investment provides growth capital to accelerate Cityside's fiber network buildout and expand its Cityside Fiber residential, business and wholesale offerings across Southern California.

SDC Capital Partners Acquires Majority Stake in IQ Fiber

September 15, 2021

Telecommunications

Funds managed by SDC Capital Partners have acquired a majority interest in IQ Fiber, a residential fiber-optic internet provider headquartered in Jacksonville, Florida. The equity injection will fund IQ Fiber's first-phase network build to pass more than 60,000 homes in the Jacksonville area and support rapid expansion across Northeast Florida.

SDC Capital Partners Acquires Majority Stake in Fatbeam

January 28, 2020

Telecommunications

Funds managed by SDC Capital Partners have acquired a majority interest in Fatbeam Holdings, LLC, providing the fiber network operator with capital to accelerate densification and strategic expansion across the western United States. Fatbeam’s existing majority shareholders will retain a material ownership stake and SDC will partner with the management team to support growth across education, enterprise, healthcare, government and carrier end markets.

SDC Capital Partners Majority Recapitalizes Summit Infrastructure Group (SummitIG)

January 11, 2019

Telecommunications

Funds managed by SDC Capital Partners have acquired a majority interest in Summit Infrastructure Group (SummitIG) in a majority recapitalization. Columbia Capital retains a material ownership stake; the transaction provides SummitIG with additional capital and operational support to accelerate expansion of its dark fiber network in Virginia and into new markets.