Suncor Energy is trading 4.76% higher at $79.01, rebounding from its November 2 close of $75.42; no company-specific announcement explaining the pre-market rise was identified. - The prior-session selloff followed a sharp oil-price decline amid hopes for progress in U.S.-Iran diplomacy, a sector-level backdrop. - Suncor is scheduled to release third-quarter results after the market close on November 3; results were not yet available during this alert. - The available evidence does not establish what triggered the rebound.