Model notes & sources
The distribution is the same five-band model the Explorer uses, grounded in Robert
Wiltbank & Warren Boeker, Returns to Angel Investors in Groups (Kauffman / ACEF, 2007) — 1,137
exits from 539 group-affiliated angels, where 52% of deals returned under 1× and the top 10% of exits
produced ~75% of all cash. "How well you pick" interpolates continuously between the study's Low / All / High
due-diligence cohorts (the same per-band probabilities and within-band skews); past the midpoint extrapolates
gently toward the High cohort. Deal, dollar and portfolio figures all come from one seeded Monte Carlo over
the same per-deal sampler, so they stay mutually consistent. Multiples are modelled independent of check size
(the study found no significant size effect). A teaching model, not investment advice.