The Role of Due Diligence in Private Investing

Nareman Hamdan

Sep 8

7 min read

Most capital losses in private investing don't come from bad markets. They come from unanswered questions. Before the term sheet, before the wire transfer, before the handshake, there is a window where the right questions can reveal everything. That window is due diligence, and how you use it determines how well you invest.

Private investments, by nature, offer less transparency than public markets. There's no daily price ticker, no quarterly earnings call open to the public, no independent analyst corps covering every deal. What you see is largely what the manager or operator chooses to show you. That's not a flaw in the system. It's simply the reality of the asset class, and it's precisely why structured, disciplined diligence matters.

This post walks through the core pillars of due diligence: the people behind the investment, the strategy being deployed, the market being targeted, the assumptions embedded in the numbers, and the risks that are easy to overlook when excitement takes over.

Due Diligence Is Not About Saying No

A common misconception is that due diligence is a gatekeeping exercise. In practice, its purpose is different. You're not hunting for reasons to walk away. You're building a complete picture of what you're walking into.

Done well, diligence gives you conviction. It allows you to commit capital not because the pitch was compelling, but because you understand the mechanics of the opportunity, you've stress-tested the logic, and you've looked at both the upside and the downside with clear eyes.

That distinction matters because investors who approach diligence as a checklist exercise tend to miss things. They verify what's on the page without asking what's missing from it. The best due diligence is not a compliance exercise. It's an act of genuine curiosity.

Start With the People

In private investing, the quality of the people running the investment often determines outcomes more than the quality of the underlying asset. A strong management team can navigate a difficult market. A weak one can destroy value even in a favorable environment.

When evaluating the team, the goal isn't to build a résumé-based case for competence. It's to understand how these people perform under pressure, how they make decisions, and whether their incentives are aligned with yours as an investor.

Some questions worth sitting with:

Has this team done this before, and what happened when things didn't go to plan?
Is the leadership dependent on one or two key individuals? What happens if they leave?
How does the team handle disagreement internally?
Are compensation structures and equity arrangements designed to retain the right people?
Do the people presenting to you have real operational experience, or primarily a fundraising background?

Reference checks are valuable here, but approach them carefully. The references a manager provides will almost always be favorable. Seek out people who worked with the team but weren't included on the reference list. Ask open-ended questions rather than leading ones. Listen for what isn't said as much as what is.

Understand the Strategy, Not Just the Story

Every private investment comes with a narrative. The strategy sounds logical. The slides are polished. The opportunity seems obvious in hindsight. But there's often a gap between the story told in the pitch and the mechanics of how the strategy actually works.

Strategy diligence means moving past the narrative to understand the process. How does the manager source deals? How do they underwrite value creation? How do they plan to exit, and over what timeframe? These aren't abstract questions. They are the operational backbone of your return.

Key areas to probe:

Is the strategy repeatable, or was the track record built on a few exceptional deals that may be hard to replicate?
Does the fund size match the strategy? A manager who built their record deploying $50 million is running a different business when they raise $500 million.
What is the value creation thesis for each investment? Is it revenue growth, margin improvement, multiple expansion, or some combination?
What does the post-close plan look like in detail, not just in concept?

Operational value creation now accounts for roughly 47% of returns in private equity, up from around 18% in the 1980s, according to industry research. That shift means a manager's ability to actually operate and improve a business matters far more than simply buying at the right price.

Read the Market With Fresh Eyes

Every manager will tell you they've identified an attractive market. The market is large, growing, underserved, or inefficient. Sometimes that's true. Sometimes it's selectively true. And sometimes it's a narrative built around data that's been cherry-picked to support the conclusion the manager wants you to reach.

Market due diligence means forming your own view of the opportunity, independent of the materials you've been given. That requires going to primary sources: industry reports, competitor filings, customer interviews, and conversations with people who work in the space without any stake in whether you invest.

When assessing market fit and opportunity, consider:

Is the addressable market growing, consolidating, or being disrupted?
Does the company have genuine pricing power, or is it competing primarily on cost?
What do customers actually say about the product or service when the manager isn't in the room?
Is customer concentration a risk? A single client accounting for more than 30% of revenue introduces real structural fragility.
Who are the serious competitors, and what would it take for them to replicate what this company does?

The goal isn't to become an industry expert overnight. It's to develop enough independent knowledge that you can identify when the story you've been told doesn't match the market reality.

Test the Assumptions Behind the Numbers

Financial projections in private investing are, by definition, forward-looking. They are estimates based on assumptions, and those assumptions deserve scrutiny. The number that matters isn't the projected return. It's the logic that sits underneath it.

Start with the Quality of Earnings. Not all EBITDA is created equal. Managers often present adjusted figures that add back certain costs as non-recurring. Some of those add-backs are legitimate. Others are recurring expenses that simply look different each year. Separating the two requires a careful read of the financials, ideally with independent support.

Beyond earnings quality, ask about the assumptions driving growth. Management forecasts in private markets tend to be optimistic. Research suggests that realized growth typically comes in at 50 to 70% of what management initially projected. Knowing that, what does the investment look like at a more conservative growth rate? At flat growth? At a mild decline?

Additional financial areas worth examining:

How is cash actually moving through the business? Profit and cash flow are not the same thing.
What are the working capital requirements, and are they growing or shrinking as the business scales?
How much debt is in the capital structure, and what does the interest coverage look like if rates rise or revenue falls?
What are the exit assumptions? What multiple is being applied, and is that consistent with where comparable assets have traded in recent years?

Sensitivity analysis is one of the most useful tools available to investors. Running scenarios where the key assumptions are worse than expected, and understanding what that does to returns, gives you a realistic picture of the downside before you commit.

Look at Risk With Honesty

Every investment memorandum includes a risk section. Most of the time, it is vague by design. The risks are listed as conditions rather than quantified as probabilities. Words like "may," "could," and "might" carry a lot of weight without saying much.

Genuine risk analysis means identifying what could realistically go wrong, how likely that is, and what happens to your capital when it does. That includes risks specific to the investment, but also broader structural risks that are easy to overlook when you're focused on deal-specific details.

Categories worth examining closely:

Liquidity risk. Private investments are illiquid. Understand your lock-up period and what mechanisms, if any, exist to exit before the fund matures.
Key person risk. If a specific individual is central to the strategy, what provisions exist if they leave or become unable to perform their role?
Market timing risk. Where are we in the economic cycle, and how does this strategy perform in a downturn?
Regulatory risk. Are there legal, compliance, or regulatory changes on the horizon that could affect the investment thesis?
Concentration risk. Across your total portfolio, does this investment add meaningful diversification, or does it increase your exposure to risks you already carry?

One question that often surfaces more useful information than any other: what is the single biggest thing that could go wrong here, and how would we know early enough to respond?

If the answer is vague or dismissive, that itself is a signal.

Legal and Structural Details Matter More Than They Appear

Investment documents are long and dense for a reason. The terms embedded in a partnership agreement, subscription document, or operating agreement shape your rights, your obligations, and your exposure in ways that the headline return target does not.

Before signing anything, understand the governance structure. Who makes decisions, and who can overrule whom? What are your rights as a limited partner if the manager underperforms or acts outside the stated mandate? What are the fee structures, and how do carried interest provisions work in practice?

It's also worth understanding the fund structure in the context of your own tax situation. Evergreen funds and traditional closed-end structures have different implications for how and when income is recognized. For investors with specific jurisdictional or organizational profiles, the structural details can meaningfully affect net returns.

Engaging qualified legal counsel to review key documents is not a sign of distrust. It's a standard part of responsible investing at any level.

Ask Better Questions, Make More Informed Decisions

Due diligence is not a process that ends with a final checklist item. It's a mindset. The investors who navigate private markets well are the ones who remain genuinely curious, who ask follow-up questions when an answer feels incomplete, and who don't mistake a polished presentation for a rigorous investment case.

A compelling opportunity deserves thoughtful questions. And thoughtful questions, asked consistently, lead to better decisions.

Before committing capital to any private investment, take the time to understand the people running it, the strategy they're deploying, the market they're operating in, the assumptions embedded in their financial projections, and the risks that could realistically affect your outcome. That understanding won't guarantee a positive result. Nothing can. But it dramatically improves the odds that you're saying yes for the right reasons.

Private investing rewards patience and discipline. Due diligence is where that discipline begins.