SEISEI INSIGHTS — M&A
Sequencing Acquisitions: Order and Combination in a Buy-and-Build Portfolio
2026-08-17
"Which company should we buy next?" It is the question we hear most often from owners who have just closed their first acquisition. It sounds like a question about the merits of a single target. In practice, what determines the outcome is rarely the quality of any one company — it is the order in which they are bought and what is placed alongside what. That is portfolio design. What follows is the sequence we have seen work repeatedly in Japan's small and mid-sized M&A market, set out as a structure.
Stage One: Not the Most Profitable Company, the Steadiest One
The starting point of a serial acquisition programme should not be the company with the most striking growth. It should be the one whose demand is insulated from the business cycle, whose orders repeat, and whose cash collection can be forecast — usually an unglamorous business that attracts little attention from outside. The reason is simple: the first company becomes the source of credit and cash for every acquisition that follows. If it wobbles, every subsequent decision is dictated by working capital. Choose the foundation wrongly and the whole design leans.
Stage Two: Consolidate Horizontally, Convert Scale into Leverage
One company is small; two are moderate; only at three do terms begin to move. Procurement, logistics and back-office functions all reprice at the moment volume concentrates. Buying a competitor is not duplication — it is the work of gathering dispersed small scale into a single scale that carries negotiating power. Acquisition alone does not bring revenue into consolidation. The consolidation-scope rules apply to companies required to file consolidated financial statements. Under the Companies Act, preparing consolidated accounts is not mandatory either, except for large companies that must file an annual securities report. A company that prepares no consolidated accounts has no consolidated revenue figure at all, even once the target becomes a subsidiary. Where it does prepare them, the premise is control of the target's decision-making body, which makes it a subsidiary, and no ground for exclusion from the consolidation scope. Cross-referred customers can add more. What this stage is designed around, though, is the improved cost structure and the different standing with counterparties.
Stage Three: Vertical and Adjacent — Building Flow and Circulation
Horizontal depth generally makes the upstream and downstream links, and the adjacent fields that share the same customers, easier to make pay. Hold both a company that supplies a product and a service location that has the customer touchpoint, and the relationship formed at that touchpoint drives repeat purchase, while the product's distribution returns customers to the touchpoint. This is not adding companies together; it is creating a state in which customers circulate within your own perimeter — the shift from owning companies to building circulation.
Stage Four: Ballast, and One Fast-Turning Piece
Finally, there is room in the portfolio for a highly profitable, asset-light business with no direct link to the core: no inventory, little capital expenditure, profit generated by a mechanism that is hard to copy. Here the purpose of the purchase is not synergy but the speed of return on capital employed. Ballast alone does not keep cash moving; fast turnover alone leaves nothing underfoot.
| Stage | What you buy | What you get |
|---|---|---|
| One | A base business with stable demand | A source of credit and cash |
| Two | Competitors (horizontal consolidation) | Procurement and logistics pricing; leverage |
| Three | Upstream, downstream and adjacent touchpoints | Customers circulating within your perimeter |
| Four | A highly profitable, asset-light business | Velocity of capital employed |
What Happens When the Order Is Reversed
The most expensive mistake in this design is inverting the sequence. Start with the highly profitable piece before a foundation exists, and there are neither the people nor the funds to integrate it; the acquired company is simply left alone. Extend vertically before horizontal depth is built, and inventory and credit exposure can accumulate ahead of the volume to justify them. Vertical integration itself can secure supply and protect margin; whether it does depends on volume and the headroom to fund it. Each stage presupposes the headroom created by the one before it.
What we contribute, from a structural standpoint, is drawing the board before the money moves: the substance of each company, how they relate once placed side by side, and the people and capital integration will require. Acquisitions are decided one at a time. Value comes from the arrangement.
This article provides general information on business and public frameworks and does not constitute individual tax or M&A-transaction advice. Specific matters are handled by qualified partner professionals whom we introduce.