Brier Skill > 0 means the brain beats the naive baseline (always-predict-base-rate). > 0.10 = useful, > 0.20 = strong. If your skill is flat or declining, something is wrong with the training data or labels.
Rolling accuracy tracks the last 50 resolved short-horizon predictions. Above 55% on directional bets is the threshold for "profitable after costs."
Annual Sharpe is the risk-adjusted return of betting on the brain's directional call. 0 = coin flip, 1+ = professional grade, 2+ = exceptional. After audit pass 67-68 it's reported on the correct daily scale (was 10ร over-reported).
Per-symbol: a green bar means the brain has measurable edge on that symbol. Red bars are noise โ consider excluding them from the universe.
Per-sector: shows where the brain has natural alpha. Tech + bonds + vol are usually different beasts.