Argonaut Private Equity Acquires Center Rock Inc.

Argonaut Private Equity Acquires Hammer & Steel Global, LLC

August 27, 2024

Industrial Services

Argonaut Private Equity has added Hammer & Steel Global, LLC to its Fund V portfolio. Hammer & Steel, a St. Louis-area distributor and rental provider of deep foundation drilling and pile driving equipment with multiple regional sales and distribution locations, will partner with Argonaut to accelerate geographic expansion and add distribution facilities while preserving the company legacy.

Argonaut Private Equity Acquires Miller Contracting

February 7, 2022

Construction

Argonaut Private Equity, a Tulsa-based private equity firm, has acquired Miller Contracting, a family-founded specialty mining, industrial and civil contracting company headquartered in southern Illinois. The deal is Argonaut's first investment from Fund V, LP (targeting $400 million), and the Miller family will remain in leadership as the firm supports growth and operational expansion.

Center Rock Capital Partners Acquires GHSP

December 2, 2025

Manufacturing

Center Rock Capital Partners has acquired GHSP, a global designer and manufacturer of precision mechatronic systems, smart actuators, and electronic controls headquartered in Holland, Michigan. The investment positions GHSP as a platform for growth—providing capital and operational expertise to expand product innovation, global reach, and operational performance in automotive and related end markets.

Argonaut Private Equity Acquires BJ Services' Cementing Business, Rebrands as American Cementing

September 1, 2020

Oil & Gas

Argonaut Private Equity acquired the cementing solutions business from BJ Services amid BJ Services' Chapter 11 bankruptcy and has rebranded the operation as American Cementing. The deal preserves approximately 260 jobs, transfers assets including bulk plants and technical labs, and establishes an unlevered PE-backed platform focused on cementing and related well completion services across major U.S. basins.

Center Rock Capital Partners Acquires Power Services Group

July 11, 2022

Industrial Services

Center Rock Capital Partners has acquired Power Services Group (PSG), a Cape Coral, Florida–based independent provider of turbine and generator maintenance, repair and overhaul (MRO) services. PSG serves power generation, industrial and petrochemical customers; Center Rock said it will support PSG’s domestic and international growth as part of its portfolio of heavy equipment aftermarket businesses.

Rocktop Technologies Acquires Incenter Capital Advisors

May 16, 2025

Financial Services

Rocktop Technologies, a technology and AI-enabled Solutions-as-a-Service firm, has acquired Incenter Capital Advisors to expand its mortgage servicing rights (MSR) market reach and deepen data-driven capital markets capabilities. The acquisition combines Rocktop's data, document, and AI infrastructure with Incenter's MSR valuation, trading, and post-transaction support expertise to offer integrated valuation, execution, and portfolio surveillance services to institutional mortgage investors.