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What is information sufficiency in secondary underwriting?

Information sufficiency asks whether the evidence available is strong enough to support the specific decision being made. It does not require perfect information; it requires knowing which conclusions are supported, which are conditional and which are blocked.

By Philippe SayeghClarityInvestPublished 22 September 2026~6–8 min read

Short answer

Information sufficiency is the point at which an investor has enough reliable evidence to make the next decision without pretending uncertainty has disappeared. In secondary underwriting, the useful output is often not a higher-confidence valuation but a clear statement of what can be concluded, what remains conditional and which missing fact is decision-blocking.

Private-market information is uneven by design

Secondary opportunities arrive with very different information sets. One may include current financials, detailed cap-table data, customer evidence and a clear seller context. Another may arrive with a price, a deck and stale round information.

Treating those opportunities with the same level of apparent precision creates false confidence.

Three information states

ClarityInvest uses a simple classification:

This is deliberately different from “good data / bad data.” The same information set can be sufficient for a first screen and insufficient for a full underwriting decision.

Why this matters for price

Information gaps are not abstract. They widen the range of possible outcomes. If that range cannot be narrowed, the price has to compensate — or the opportunity should remain unresolved.

In private-company secondaries, even seemingly basic questions can change the case: current share class, transfer restrictions, recent financing terms, customer concentration, employee tender mechanics, or whether the seller has access to information the buyer does not.

The right answer can be “we cannot conclude this yet”

Investment processes often reward apparent decisiveness. But one of the strongest underwriting outputs is a precise boundary around what the evidence supports.

Uncertainty is not the failure. Unpriced uncertainty is.

Key takeaway

Information sufficiency should be explicit in the decision artifact. It tells the team whether the next move is to underwrite deeper, obtain one missing fact, demand compensation through price, or stop.

Sources and notes