Portfolio Construction and Aggregation — Seeing the Whole Book
Individual deals and positions are only half the picture; the other half is the portfolio — the whole book of holdings whose combined risk and return is what actually matters to a CIO. Portfolio construction optimizes what to hold, and portfolio aggregation rolls individual positions up into a firm-wide view of risk and exposure. AI helps with both, but the deepest value is often simply seeing the whole book clearly — which is harder than it sounds. This post is about the portfolio layer.
Individual positions are half the picture; the portfolio is the other half. Construction (what to hold) and aggregation (the firm-wide risk view), why seeing the whole book clearly is deceptively hard, and why AI helps most with consistent aggregation and surfacing hidden concentration — not fancier optimization against unforecastable returns. (Educational, not financial advice.)