The Three Lenses of Due Diligence

When diligence fails, it's rarely for lack of effort. The effort was just aimed at the wrong question. I've watched a team spend six weeks perfecting a model of a business while the manager's incentive terms, buried a hundred pages deep in a limited partnership agreement, quietly settled who actually keeps the upside. Underwriting a private investment means answering three separate questions, and treating them as one question is how a careful process still walks past the thing that matters.

The questions themselves are simple. Is the deal good? Is the manager good? Will the operation hold? Three different lenses, each ground for a different job. A firm that's excellent through one of them is not automatically any good through the other two, and the ones that assume otherwise are the ones that get surprised.

The Three Lenses At A Glance

Before any work starts, hold the three lenses side by side. Each asks a different question, looks at different evidence, and catches a different kind of failure. The investment lens asks whether the asset itself is any good; miss here and you've bought a deal that underperforms. The manager lens asks whether the person running it is any good; miss here and the terms and incentives quietly route the upside away from you while the assets do fine. The operational lens asks whether the machinery around the investment will hold, and when it fails it fails on custody, valuation, and control gaps. A failure there costs the whole position, not just a few points of return.

Kept separate, the three add up to a complete picture. Collapse them into one and you get a blind spot, almost always in the operational lens, because it's the dullest of the three and the easiest to wave through on a Friday afternoon.