Europe’s largest bank, HSBC, announced an additional $3bn (€2.8bn) share buyback plan as it reported strong third-quarter earnings on Tuesday. This brings the total return to shareholders to $9bn (€8.3bn) this year, including previously completed share repurchases. The board also approved a third interim dividend of $0.10 per share. The solid results followed a sweeping overhaul unveiled last week, which are likely to have boosted investor optimism regarding its strategic cost-cutting measures. New CEO Georges Elhedery commented: “We delivered another good quarter, which shows that our strateg…