Due Diligence

Due diligence is the investigation of an investment case: the evidence for it, the weaknesses that could break it and the questions still unanswered.

Why due diligence matters to your portfolio

Research doesn't prevent losses. A business can fail, assumptions can prove wrong and information can stay incomplete after careful work. Due diligence makes the basis for your decision clear; it doesn't turn uncertainty into certainty.

The case also has to fit your own situation. An investment can make sense on its own and still add to risks you already carry through your job, your property or a business you own.

Keep the reasoning behind each decision so you can come back to it. The private market portfolio map gives that reasoning a home, so an open question doesn't get papered over by an attractive category label.

How due diligence is used

A managing partner at Thesis Capital describes playing devil's advocate inside the firm and asking repeatedly why a deal should be rejected, even when the business feels familiar. A thesis is the explanation of why an investment might succeed. The useful habit is to hunt for evidence that weakens it, not only evidence that supports it.

Example: you like a business category because demand looks durable. Reading further, you find that customers can postpone purchases when their own finances tighten. You rewrite your description of demand and note what's still uncertain.

That doesn't decide anything by itself. It changes the question. You might dig further, rethink the role the investment would play or make no new commitment. None of those choices makes the research a guarantee.

Keep your original reasoning when new information arrives. The private portfolio review shows how to revisit claims and records after things change.

Common mistakes

Piling up documents without asking what each one proves creates the look of understanding. A document can support a narrow claim and leave the wider case open.

Familiarity makes supporting evidence feel stronger than the contrary kind. Working in an industry doesn't mean every business in it faces the same prospects.

Finishing the research isn't a certificate. It may turn up uncertainty that can't be resolved, and a clear record says so instead of converting it into a score.

Related terms

Concentration risk connects an investment case to exposures you already hold. The accredited investor entry covers the separate question of eligibility.

Source notes

The managing partner's remarks come from an interview and are paraphrased; the example is our own.