The Corporate Breakup Wave and the Case for Selling a Piece, Not the Whole

In the space of three days at the end of June, four household names moved to break themselves apart. Honeywell completed the spin-off of its aerospace business, Comcast announced it will separate NBCUniversal and Sky from its cable operations, S&P Global distributed shares in its Mobility unit, and Corteva's board approved a plan to split the company in two. Separations of this scale are board-level events at public companies, but the reasoning behind them is not reserved for conglomerates. It lands directly on any business owner deciding whether the whole company is the right thing to sell.

A Week of Separations

The headline event came on June 29, when Comcast announced a tax-free spin-off of NBCUniversal and Sky into an independent public company, expected to close in roughly twelve months. The new media company will hold the Universal theme parks, the film and television studios, the NBC and Telemundo networks, the Peacock streaming service, and the European broadcaster Sky. Comcast will keep its broadband, wireless, and business services operations. It is the company's second separation inside a year: the Versant spin, which carved out a portfolio of cable networks including CNBC and USA Network, was completed on January 2.

The same week brought three more data points. Honeywell Aerospace began trading on Nasdaq under the ticker HONA on June 29, completing a split announced in 2025 and leaving automation businesses at the core of the remaining Honeywell. S&P Global completed the distribution of its Mobility unit to shareholders on July 1. And Corteva's board unanimously approved separating the company into two public businesses, one holding crop protection and the other seed, with completion expected in the second half of 2026.

Each deal has its own story, but the pattern is hard to miss. Large companies are concluding, one after another, that their pieces are worth more apart than together.

Why Boards Keep Choosing Separation

The stated rationale is consistent across these announcements: sharper focus, cleaner capital allocation, and the ability for each business to attract the investors suited to it. Comcast's case illustrates the pressure behind the language. Its shares had fallen roughly 30 percent over the twelve months before the announcement, weighed down by the shift away from the traditional television bundle. A cable and connectivity business and a media and entertainment business draw different buyers, carry different growth profiles, and deserve different balance sheets. Housing them under one roof meant each was being valued, at least in part, on the other's problems.

Survey data suggests the wave has room to run. In KPMG's 2026 deal market study, 57 percent of corporate dealmakers and 71 percent of private equity firms said they are open to or actively pursuing portfolio rationalization, the process of reviewing every business unit against the question of whether the company is its best owner. Just over half of corporate respondents expect carve-out activity to rise over the next twelve to twenty-four months. Deloitte's 2026 global divestiture survey points to the same motivations: sharpening strategic focus, redeploying capital, and simplifying the operating model.

The Owner's Version of the Same Decision

A private company owner rarely spins a division off to shareholders. The private market version of the separation wave is the carve-out sale: selling a division, product line, or location while keeping the rest. The situations where that beats selling the whole company are more common than many owners assume.

The clearest case is a unit outside the core. A manufacturer that acquired a distribution arm years ago, a services firm running a small software product on the side, a company with one division serving an entirely different customer base. Kept together, these mixed businesses tend to be valued on a blended multiple, and the blend usually settles toward the lower end. A buyer who wants the manufacturing business will not pay a software multiple for the software tucked inside it. Separated, each piece can be priced by the buyer who values it most.

Capital needs drive the second case. Selling a non-core division can fund growth in the core business without taking on debt or outside investors, the private company equivalent of what boards call redeploying capital. The third case is buyer appetite itself. Private equity firms have become active buyers of corporate carve-outs, drawn to units that were under-managed or under-invested inside a larger parent, and that appetite extends down into the middle market.

There is also a defensive version of the logic. When a buyer looks at a company with tangled, overlapping operations, the diligence gets longer, the assumptions get more conservative, and the price reflects both. Buyers pay for clarity. A division with its own financial statements, its own team, and its own customers sells like a business. One that has to be untangled on the way out the door sells like a project.

What Makes a Carve-Out Harder Than a Whole-Company Sale

The discipline these public separations require is exactly where private carve-outs succeed or fail. In Deloitte's survey, 52 percent of corporate sellers named operational disentanglement as the biggest challenge in a divestiture, followed by valuation complexity at 43 percent and IT and data separation at 40 percent. Scale the numbers down and the same three problems appear in a $20 million divestiture.

The first is financial. A division inside a private company usually does not have clean standalone financial statements. Its results are mixed into the consolidated books, and costs like rent, insurance, back-office staff, and the owner's time are shared or allocated informally. Preparing a carve-out means building a standalone profit and loss statement, with cost allocations a buyer's accountants can test, ideally covering two to three years. Buyers will run a quality of earnings review on that carve-out statement, the analysis that stress-tests reported profits, and allocations that cannot be defended come straight out of the price.

The second is operational. People, systems, facilities, and supplier contracts often serve both the unit being sold and the business staying behind. Most carve-out sales bridge the gap with a transition services agreement, a contract under which the seller keeps providing services like payroll, IT, or warehousing to the sold unit for a defined period after closing, at a defined cost. A realistic transition plan reassures buyers; an improvised one gives them reasons to discount.

The third is the piece sellers most often miss: stranded costs. The overhead that supported the sold division does not disappear with it. The warehouse lease, the systems sized for a larger company, the finance team built for two businesses; all of it stays behind, spread over a smaller revenue base, and it belongs in the analysis before the decision to sell, not after.

What to Watch

Three things are worth tracking through the second half of the year. First, the completions: Corteva's split is slated for the back half of 2026, and Comcast's spin will unfold over the coming year, keeping separation logic in the headlines. Second, carve-out volume in private equity deal flow, where survey sentiment suggests corporate sellers will keep feeding the pipeline. Third, for owners closer to home, how buyers treat allocated costs in diligence; as carve-outs become a larger share of deal activity, the scrutiny applied to carve-out financials is rising with them.