The Three Lenses of Due Diligence

Most diligence that goes wrong does not go wrong for lack of effort. It goes wrong because the effort was pointed at the wrong question. A team spends six weeks perfecting a model of a business while the manager's incentive terms, buried in a limited partnership agreement, quietly decide who really keeps the upside. Underwriting a private investment means answering three separate questions, and treating them as one is how a thorough process still misses the thing that matters.

The three questions are simple to state. Is the deal good? Is the manager good? Will the operation hold? Each is a different lens, ground for a different job, and a firm that is strong at one is not automatically strong at the others.

Lens one: the investment

The first lens looks at the asset itself. It starts with a thesis, a reason this company or property should be worth more in five years than it is today, and then it tries to break that thesis. The market and the competition get tested. Customer concentration gets counted, because a business where one client is a third of revenue carries a risk that a page of averages will hide.

At the center sits quality of earnings, the discipline of turning reported profit into real, repeatable profit. Reported EBITDA is where the conversation begins, not where it ends. The work is in the adjustments: which add-backs are legitimate and which are wishful, whether margins are sustainable or borrowed from one good year, whether the tax history holds. The places diligence actually finds trouble are unglamorous and consistent. Inventory costed or valued too generously. Cash-management controls loose enough to leak. Receivables on the books that the company will never collect. None of these appear in the pitch. All of them appear later.

Lens two: the manager

When the investment is a fund rather than a single asset, a second lens matters more than the first: the manager. A track record is the obvious place to look and the easiest to misread. A headline internal rate of return can be inflated by early markups, by subscription credit lines that delay calling investor money and flatter the early return, or simply by a rising market that lifted everyone. The more honest measures are realized: how much cash has actually come back relative to what was called, a figure called DPI; how the gains break down across deals; and how often the manager lost money, not only how much they made when they won. The sharpest single test is whether the manager beat what the same cash, invested and returned on the same dates, would have earned in a public index, a comparison called the public-market equivalent.

Then there is the question a number cannot answer. Did this team earn the record, or did the era? A strong result in a decade of falling rates and rising multiples deserves harder questions than the same result earned against the wind. Around that sit the durable things: whether the senior team has stayed together, whether the partners have real money of their own in the fund, and what the agreement actually says about fees, the profit split, what happens if a key person leaves, and whether investors can remove the manager for no fault at all. The largest investors negotiate side letters that a smaller one never sees, on fees, co-investment, and information rights; knowing what the biggest names extracted tells you where you actually stand. Institutions formalize most of this in a standard diligence questionnaire, and for good reason. The terms outlast the pitch.

Lens three: the operation

The third lens is the one most investors underweight, because it is the least exciting and the least likely to improve a return. Operational due diligence looks at the machinery around the investment. Who holds the assets. Whether an administrator independent of the manager, rather than the manager itself, strikes the monthly valuation and keeps the record. Whether there is a real valuation committee and a written policy for the positions that do not trade and therefore have to be marked by judgment. The identity and quality of the auditor. Whether the service providers can produce a clean controls report, the kind an auditor signs on how the plumbing actually runs. The cash controls, the cyber posture, the compliance function, the plan for what happens if the founder is gone tomorrow.

This lens does not find a better return. It finds the absence of one. The largest losses in private markets have rarely come from a good manager having a bad year. They have come from valuations no independent party ever checked, from custody that let money move without a second signature, from a track record that was a story rather than a fact. The most infamous frauds in the industry all had excellent reported numbers. What they lacked was plumbing that could be verified. The boring lens is where the zeros live.

How the three lenses fail

The predictable failure is imbalance. The investment lens is the interesting one, so it gets the hours and the sharpest people. The operational lens is tedious, so it gets a checklist and a junior analyst, if it gets anyone at all. That is exactly backwards from where the catastrophic risk sits. A mediocre deal loses some money. A missing control can lose all of it.

The second failure is mistaking the lenses for one another. A great asset run by a manager whose terms quietly harvest the upside is not a great investment. A brilliant manager whose fund has no independent valuation is not a safe one. Each question has to be asked on its own, by someone equipped to answer it.

The Mavros view

Diligence is not a search for certainty, and it is not an attempt to eliminate risk. It is the work of knowing precisely which risks you are being paid to take and which you are taking for free. The good ones, the risk that a sound business grows more slowly than hoped, are why the returns exist. The free ones, a mismarked valuation, a leaking control, a term that no one read, pay nothing and can cost everything.

For our clients, that means three lenses, held separately, before capital moves. The point is never to talk anyone out of a good investment. It is to make sure that when a return does not arrive, it was because the market moved, and not because a question no one asked had an answer all along.