Private Equity Roll-Up Strategies in Industrials

Introduction

In May 2024, the FTC and DOJ jointly announced a request for information on serial acquisitions and roll-up strategies "throughout the economy that have led to consolidation harming competition." The agencies singled out roll-up strategies, "often employed by private equity firms," as "particularly pernicious" because individual transactions may fall below Hart-Scott-Rodino (HSR) reporting thresholds and thus escape agency review. FTC Chair Lina Khan vowed a "muscular" approach to PE enforcement, and DOJ Antitrust Division head Jonathan Kanter declared that "the era of lax enforcement is over."

For industrials bankers who advise on PE-backed platform acquisitions, bolt-on deals, and platform exits, this regulatory shift is significant. The roll-up model is not going away (the economic logic of consolidating fragmented industrial markets remains compelling), but the execution now requires more careful antitrust analysis and documentation than in prior years.

The agencies' focus is on serial acquisitions where a single buyer (typically a PE-backed platform) executes multiple transactions in the same market over time, with each individual deal too small to trigger HSR filing requirements (currently $119.5 million in deal value for mandatory filing in 2024). The concern is that the cumulative effect of 10-20 small acquisitions can create market dominance that no single transaction would have achieved.

Serial Acquisitions Below HSR Thresholds

A pattern where a PE-backed platform completes multiple acquisitions in the same industry, each individually below the HSR filing threshold (approximately $119.5 million), thereby avoiding pre-merger review by the FTC or DOJ. While each transaction is individually immaterial to competition, the cumulative effect may create a dominant position in a local or national market. The FTC's 2024 request for information specifically seeks evidence of this pattern across sectors including housing, defense, distribution, construction, aftermarket/repair, and professional services, many of which are active PE roll-up verticals in industrials.

The RFI seeks information from the public on serial acquisitions in sectors that directly overlap with industrials PE activity: distribution businesses (where PE sponsors build specialty distribution platforms), construction (where PE sponsors consolidate building products distributors and contractors), aftermarket/repair (where HVAC services and other home services roll-ups are concentrated), and defense and cybersecurity (where cleared PE platforms aggregate defense suppliers).

The increased scrutiny does not eliminate PE roll-up activity in industrials (the FTC has not proposed banning below-threshold acquisitions), but it changes the execution in several ways.

HSR filing amendments. The agencies have proposed requiring premerger notification forms to include information about each party's prior acquisition history, making it easier for regulators to identify serial acquisition patterns even when individual transactions do not require filing. This means PE sponsors and their platforms should expect that their full acquisition history will be visible to regulators on any future HSR-reportable transaction.

Market concentration analysis. For waste services, HVAC services, and other local market roll-ups, bankers and sponsors must now conduct more rigorous market concentration analysis before each bolt-on acquisition. If the platform already holds 30-40% market share in a local market, the next acquisition in that market carries heightened antitrust risk even if it falls below HSR thresholds. Documenting the competitive justification for each acquisition (customer benefits, service improvement, no price increase intent) provides a defense if the FTC later investigates the cumulative pattern.

National vs. local market definition matters. Industrial roll-ups that operate in locally competitive markets (waste collection, HVAC services, specialty distribution) face different antitrust dynamics than those in nationally competitive markets (specialty components, testing and inspection). A waste platform with 40% market share in one city is a local antitrust concern; a specialty components platform with 5% national market share across dozens of niche applications is not. The market definition (local vs. national vs. product-specific) drives the antitrust analysis.

The regulatory risk varies significantly across PE roll-up verticals depending on the market definition and competitive dynamics.

Highest risk: Local service markets. Waste services, HVAC services, and regional specialty distribution operate in geographically defined markets where a platform can achieve 30-50% market share through 10-15 acquisitions. These are the verticals most directly exposed to the FTC's concerns about serial acquisitions creating local market dominance. The competitive dynamics are visible: customers in a metro area have a finite number of waste haulers or HVAC contractors, and when a PE platform acquires most of them, the reduction in customer choice is measurable.

Moderate risk: National markets with niche segments. Specialty engineered components and testing, inspection, and certification operate in nationally or globally defined markets where individual acquisitions add geographic or product diversity rather than concentrating local market power. A TIC platform that acquires laboratories in five different testing verticals across ten different states is aggregating, not concentrating, and the antitrust risk is significantly lower.

Lowest risk: Fragmented manufacturing. PE platforms rolling up small specialty manufacturers typically face minimal antitrust risk because each manufacturer produces a narrow range of products with numerous alternative suppliers. The platform may be the largest producer of a specific component, but the market is typically defined broadly enough that the platform's share remains below levels that trigger regulatory concern.

For industrials bankers, the regulatory scrutiny creates both risk and opportunity. The risk is that some bolt-on acquisitions may face regulatory delays or challenges that did not exist before 2024. The opportunity is that PE sponsors need more sophisticated advisory on market definition, competitive analysis, and deal structuring to navigate the new environment, creating additional advisory revenue for bankers who develop antitrust fluency alongside their M&A execution skills.

Bankers advising PE sponsors on platform strategies should incorporate antitrust analysis into the initial platform thesis: which geographic markets and product segments offer the deepest bolt-on pipeline without creating concentration concerns? How should the acquisition pace be modulated as the platform's market share grows? At what point does the platform need to expand into new geographies or adjacent verticals rather than continuing to consolidate the same local market?