The shares of Spain’s sixth biggest bank, Banco Popular, plunged 36% this week to €0.43, reducing the bank’s market capitalization to €1.7 billion. Just three weeks ago, when there was still a glimmer of hope that things could be turned around, it was worth almost double that. Its shares traded at €15 ten years ago, before the collapse of Spain’s mind-boggling housing bubble that left Popular holding billions of euros of real estate assets.