The private equity industry is holding roughly $3.8 trillion in unsold assets, spread across about 32,000 companies that have not yet found a buyer. Bain & Company’s Global Private Equity Report 2026 shows the average hold period at exit has stretched to around seven years, and distributions to limited partners have stayed below 15 percent of net asset value for four consecutive years, an industry record.
For a general partner managing an aging portfolio, those figures are not abstract. They describe the pressure sitting on the desk every morning.
Some of those companies are simply waiting for the right market. The business is healthy, the team is accountable, the reporting is clean, and the exit happens the moment the window opens. Others are stuck for a reason no market recovery will solve. I’ve come to think of that second group as zombie companies, and the distinction matters more than most owners and sponsors want to admit.
In a previous article, I wrote about why private equity keeps buying companies it can’t sell. This piece picks up where that one left off: what happens when a portfolio company becomes genuinely difficult to sell, and what a firm can actually do about it.
What Is a Zombie Portfolio Company?
A zombie portfolio company is a business that keeps operating but has stopped building value a buyer will pay for. It is not defined by one bad quarter or a single difficult year. It is defined by the absence of real management.
These businesses are not being run by the numbers. There is no consistent discipline around margin, pipeline, payroll as a percentage of revenue, or free cash flow, and no accountability tied to operational outcomes. Revenue still comes in and reports still get filed, but nothing is being built.
The clearest picture I can give you is a restaurant with no adult in charge. The part-time staff do whatever they want, the oversight is gone, and no one is truly accountable for what happens between open and close. The doors stay open for a while. The business does not get any better.
Inside a portfolio, that same absence of control produces something more dangerous than a weak quarter. It produces stagnation. From a managing partner’s chair, it looks like a return that compresses year after year while the path to an exit stays foggy, with no momentum, no visibility, and no clear way out.
How Does a Healthy Company Become Unsellable?
Most zombie companies are not the product of one large mistake. They are the product of a pattern of unchecked assumptions.
The acquirer assumed the existing team would execute the new owner’s priorities without friction. That margins would normalize on their own. That debt service would stay manageable and the business would grow into the original thesis. Every one of those is a reasonable hope, and none of them is a management system.
One of the most expensive mistakes any acquirer makes is believing the incumbent team will automatically perform to the standard the new owner requires. It occasionally happens. It should never be presumed. What a business needs after an acquisition is a structure of checks and accountability, a measurable timeline tied to operational outcomes rather than to projections built in a data room.
Without that structure, a firm is not managing a portfolio company. It is hoping one improves, and hope has never been a management strategy.
Early Stall or Deep Zombie? The Two-Stage Problem
Not every stuck company needs the same intervention. Knowing where an asset actually sits on the deterioration curve is what determines the work ahead.
An early stall usually runs 12 to 24 months. Margins are slipping, the management team is operating without a clear accountability framework, and the financials are getting harder to explain cleanly. The business still has momentum, customers are still buying, and the core model is intact. At this stage the work is mostly structural: install real financial discipline, strengthen or replace weak leadership, set KPIs that carry consequences, and reset the story before the next marketing process.
A deep zombie is a harder picture, typically three or more years of drift. Management has normalized underperformance, the original thesis has been quietly set aside, debt covenants may be strained, and the best people have often left or checked out. The business still runs, but there is nothing a buyer will pay a premium for. The work here goes deeper: operational restructuring, likely leadership changes, a recalibrated cost structure, and an honest reassessment of what the business can realistically support in both pricing and debt. Sometimes the question becomes whether this is a recoverable asset at all, or whether the better outcome is a structured exit at a loss with a clean story for LPs.
Treating a deep zombie with an early-stall playbook is one of the most common and costly errors in portfolio management. It buys time without buying progress.
Why Do Buyers Walk Away?
The exit market has changed in a way that punishes weak preparation.
Buyers today are not simply reviewing statements and projections. They are asking harder questions and looking for evidence that a business is stable, scalable, and genuinely well run. Capital costs real money again, and when a high cost of capital meets inconsistent margins, thin reporting, or unpredictable cash flow, buyers have every reason to walk and the discipline to do it.
Diligence has become far more hands-on as a result. Years ago I knew of a buyer evaluating a chain of hair salons. Rather than trusting the owner’s numbers, the buyer stationed someone outside each location for a full week, counting customers and comparing the count against register data. In every case, the owner had overstated results. The buyer got a better deal and a truer picture because they did the work.
For a GP preparing a company for market, the lesson is simple. Whatever a buyer can find in diligence, they will find. The real question is not how to present the company. It is whether the company can withstand genuine scrutiny. Financial statements are only a starting point. Are they audited, and if not, why not? What do the trends show across a full cycle? A surgeon does not operate without imaging, and selling a business well demands the same discipline on both sides of the table.
What Do Firms Do When They Know They Have a Problem?
When a portfolio company stalls, a firm generally has a handful of options, and most of them only move the problem around.
Some obscure the asset inside the portfolio and hope the other holdings carry aggregate performance. That works until the numbers surface, and they always surface. Some pursue a GP-to-GP trade and pass the asset to another firm with its own portfolio gaps, which relocates the issue without resolving it. Some sell at a loss, which LPs rarely forgive quickly and which the fund’s track record can carry for years.
Then there is the harder option, which is to actually fix the business. That means permanent solutions built around accountability: managing by the numbers, making difficult calls on leadership, cost, pricing, and debt service, and doing it on a timeline that creates a credible exit story before fund life becomes the constraint. It is not easy work. For a GP that genuinely needs to exit a position, it is usually the only path to a real outcome.
Why the LP Relationship Is Part of the Problem
Any honest conversation about zombie companies has to include the LP dynamic, because that is often where the real pressure lives.
When distributions have sat below 15 percent of NAV for four straight years, LPs are not just reading their statements. They are asking pointed questions on calls, raising concerns through LPAC channels, and folding their experience with the fund into decisions about whether to re-up. The instinct, when an asset is in trouble, is to defer the hard conversation until there is good news to pair with it. That instinct is almost always wrong.
LPs who are surprised by bad news lose confidence in their GP’s judgment. LPs who are kept current on a credible remediation plan, even a painful one, tend to keep their confidence in the GP’s competence and candor. A quarterly update that says plainly, “This asset underperformed our thesis, here is what we got wrong, here is the intervention we’ve put in place, and here is the revised exit timeline,” is a harder letter to write than a vague one. It is also the kind of letter that holds a GP relationship together through a difficult cycle.
The Real Issue Is Rarely the Market
It is easy to blame an unsellable company on market conditions, and to be fair, the market matters. Buyers are more selective, financing is more expensive, and diligence is more thorough. Continuation vehicles, one of the liquidity tools GPs reach for, still account for less than 10 percent of total exit value, which means the alternatives exist but do not solve the underlying problem.
The deeper issue is almost always operational. Most companies are not unsellable because of the market. They are unsellable because they are not being managed in a way that produces consistent, measurable, transferable value. There is a hard truth underneath the Bain data too: its analysis of fifteen years of buyout vintages shows that internal rate of return tends to stagnate around year seven and decline after that. Time is not a neutral force in a portfolio. The longer an asset drifts, the more the math works against you.
The firms that win in this environment will not be the ones that simply keep deploying capital. They will be the ones that manage what they own with enough discipline and accountability to build businesses other people actually want to buy. Buying a company is the first step. Building a business someone else wants is where the real work lives.
How to Start an Honest Assessment
If a portfolio company is stuck, the first move is not to make excuses for it. It is to understand, with precision, what is actually happening inside the business. A few questions get you most of the way there:
- Is the company genuinely being managed by the numbers?
- Is the management team operating against accountable targets that carry consequences?
- Are margins improving, holding, or eroding?
- Is free cash flow clear, explainable, and defensible to a buyer?
- Is this an early stall or a deep zombie, and have you been honest with yourself about which one it is?
- Is the business actually moving toward a real exit, or just surviving another quarter?
Those are uncomfortable questions. They are also the necessary ones, and the longer they go unasked, the harder the answers get.
Turn a Stalled Asset Into One a Buyer Wants
At American Management Services, this is the work we do. We go on-site, get into the numbers, and install the operational discipline and accountability that turn a stalled portfolio company into an asset a buyer will pay for. Not a report. Results.
If you have a portfolio company that has stopped moving toward an exit, let’s talk about what it would take to change that.
