Diagonal Acquisitions: Conglomerate

Forming a conglomerate as an acquisition strategy is an interesting method for expanding a business. While this method is probably less common than horizontal or vertical integration, it also has its pros and cons. Forming a conglomerate is the method of acquiring businesses that do not participate in the same type of business as the acquiring company. For example, a product manufacturing company acquires a financial services company.

While this approach does not have the directly related benefits that vertical or horizontal acquisitions do, it does have some indirectly related benefits.

Let's reflect back on the example of the product manufacturer that acquires a financial services company. While the financial provider is not going to directly expand the customer base, and it is not going to increase production efficiency, it does have the capacity to manage finances and give solid financial consulting advice. In essence, rather than outsourcing its needs, it simply hires its own subsidiary to perform the work.

This can also provide a sort of balance to both companies if one industry begins to struggle. One former deal that took place about a year ago was with a large construction company that had successfully pursued the conglomerate strategy. The parent company owned approximately eleven different companies that consisted of concrete carriers, excavation contractors, water services, blasting services, financial services, dirt hauling services, and crane operations.

While each company had its own operations and projects allowing them to work independently, the collection of each of the companies allowed the parent company to take on large projects that none of the companies would be able to engage in single-handedly. This also allowed the parent company to play it safe by making more accurate assumptions when making bids simply because each of the contractors were his own businesses.

As we have discovered over the most recent articles I have published, there are a number of different methods you can take for pursuing strategic acquisition growth within your organization. Depending on your current position and vision for what you want to expand your business into, you may want to take on any one of the three methods we have discussed.

The Strategic Logic Behind Conglomerate Acquisitions

Conglomerate acquisitions — sometimes called “diagonal” acquisitions — are built on a different value proposition than deals driven by operational synergy. The core thesis is typically one or more of the following:

• Portfolio diversification — owning businesses across uncorrelated industries smooths aggregate cash flow. When one sector contracts, another may be growing, reducing the parent company's overall earnings volatility.
• Internal market creation — the construction conglomerate example above illustrates this well. Rather than sourcing services from external vendors at market prices, the parent routes work to its own subsidiaries, capturing margin and gaining operational control over quality and scheduling.
• Capital allocation advantage — a financially sophisticated parent can allocate capital across subsidiaries more efficiently than an arms-length market might, directing funds toward the highest-return opportunity within the portfolio at any given time.
• Competitive bid advantage — as the construction example shows, owning multiple complementary service lines allows the parent to bid on larger, more complex projects as a single integrated provider, a capability no individual subsidiary could offer alone.

Conglomerate vs. Complementary Acquisitions

It is worth distinguishing conglomerate acquisitions from complementary acquisitions, which involve purchasing businesses that serve adjacent markets or address adjacent needs for the same customer base. Complementary deals typically generate more immediate revenue synergies but require deeper integration. Conglomerate deals preserve more operational independence at the subsidiary level, which can simplify integration but also means fewer direct synergies to unlock.

The right approach depends heavily on the acquirer's existing capabilities and strategic intent. A company with strong operating expertise in a single industry may find more value in complementary or horizontal acquisitions. A company with strong capital allocation and management oversight capabilities — the classic holding company model — may extract more value from the conglomerate approach.

Due Diligence Considerations for Conglomerate Deals

Because conglomerate targets operate in industries unfamiliar to the acquirer, due diligence requires particular care. Buyers cannot rely on industry intuition to identify hidden risks — they must build that understanding from scratch or bring in sector-specific advisors.

Key diligence areas for conglomerate acquisitions include regulatory environment (industries the acquirer has not operated in may have licensing, environmental, or labor requirements that are entirely new), key-man risk (smaller subsidiaries often depend heavily on a single operator or owner-manager), and integration governance (how much autonomy will the subsidiary retain, and what reporting and oversight structure will the parent impose).

Our due diligence request list provides a structured starting point for the information-gathering process, and our diligence tracker helps acquirers manage the process systematically across multiple workstreams.

Financing a Conglomerate Acquisition Strategy

Conglomerate acquisitions are often financed differently than strategic acquisitions driven by synergy. Because lenders and equity investors evaluate each deal on its standalone merits — including the target's own cash flows and asset base — the acquirer must be prepared to underwrite each acquisition independently rather than relying on combined-entity projections.

For buyers pursuing a multi-acquisition conglomerate strategy, acquisition financing structures that can be deployed repeatedly — such as revolving credit facilities, holding company debt, or committed equity capital — are often more efficient than deal-by-deal fundraising. Our team works with acquirers to structure capital that supports a platform strategy rather than a single transaction.

If you are evaluating a conglomerate acquisition or building a multi-business platform, prepare a transaction with our advisory team to map the right structure and financing approach for your situation.

Frequently Asked Questions

What distinguishes a conglomerate acquisition from a horizontal or vertical acquisition?

A horizontal acquisition targets a competitor in the same industry and market. A vertical acquisition targets a supplier or distributor in the same value chain. A conglomerate acquisition targets a company in an entirely different industry, with no direct operational relationship to the acquirer's existing business. The rationale shifts from operational synergy to portfolio diversification, capital efficiency, or internal market creation.

Are conglomerate acquisitions less common today than in the past?

Yes. The conglomerate model was particularly popular in the 1960s and 1970s, when diversification was more widely viewed as a value-creating strategy. Academic research and investor activism have since shifted the prevailing view toward focused businesses, and many of the large conglomerates of that era have since been broken up. However, conglomerate structures remain common in family-owned holding companies, private equity platform strategies, and certain international markets.

How is a conglomerate typically managed post-acquisition?

The most common governance model is a lean holding company that provides financial oversight, capital allocation, and leadership development, while leaving day-to-day operations to subsidiary management teams. The parent sets financial targets, reviews performance against those targets, and makes capital allocation decisions, but does not typically direct operational decisions at the subsidiary level. This model requires strong financial reporting systems and disciplined management review processes at the holding company level.

What are the biggest risks in a conglomerate acquisition strategy?

The primary risks are complexity, management bandwidth, and the “diversification discount” that public market investors often apply to conglomerates. Private acquirers are less subject to the market valuation concern, but complexity and management stretch remain real. Acquirers who move too quickly across too many industries before building the oversight infrastructure to manage them often find that subsidiary performance deteriorates without adequate parent-level attention.