Learn · Investment Book

What is an investment Book?

Reviewed against the platform's code on Sep 23, 2026

An investment Book is a living, parameterised portfolio: a declared policy — universe, selection, sizing, constraints, holding rules, rebalancing, execution and risk — applied continuously to fresh forecasts, with every position, outcome and change recorded against that policy.

Why it matters

A model portfolio shows what was held; a Book also shows why. Because every decision traces to a parameter, a result can be attributed to the forecast, the sizing rule or the risk limit that produced it — and changed on evidence rather than on mood.

How it works

A template carries the policy; a Book is an instance of it with its own mandate. Each day the Book reads the latest forecasts, applies its selection and sizing rules within its constraints, and records the positions and results.

Questions

Is a Book a fund?
No. A Book is a portfolio run by software under a declared policy. Opulence Alpha is non-custodial and does not hold client assets.
What does a Book show that a portfolio does not?
What it believes, why, how uncertain it is, the resulting positions and risks, the outcomes, and what changed afterwards.
Can two Books share the same forecasts?
Yes, and that is the point: when they differ only in one policy field, the difference in their results measures that field.

Educational content about research methods. Not investment advice.