Moderate confidence: R² is 0.22; these three factors explain some but not most of VIST's day-to-day variance. Treat the split below as directional.
Of VIST's +52.3pp move over this window, +10.4pp (20% of the total magnitude) is idiosyncratic, not explained by riding market, sector, or rate moves. The rest (+41.9pp) came from systematic exposure: market -3.3pp, sector +43.2pp, rate +1.9pp.