Each mark is a signal call, BUY, SELL, or no position, recorded at the earnings print, not selected in hindsight. Individual names are close to a coin flip, so Core 16 (the blended book) is the primary view; the per-name views are for inspection. Hover a mark for its inputs and outcome.
Basis for the cumulative figure. Two factors, both stated so they can be adjusted for. First, positions are held through the full post-earnings drift, a multi-week effect, rather than the first one or two sessions. Second, the book holds multiple positions concurrently (they overlap), so the figure is per-position notional across concurrent trades, not sequential on a single account. The per-trade effect is unchanged; this is its aggregate under a full-book, full-horizon construction. Figures are gross of costs on a 16-name sample; the statistical detail, including where the effect is marginal, is on the available on request.