After a brutal, amazing sell-off yesterday, Greece's major listed banks are surging back today. After a 26.8% share price collapse yesterday, Alpha Bank is up by almost 20% today, showing just how volatile and tense Greek markets are at the moment. All the major banks are back up, by between 8% and 20%. The overall Athens stock index is up just 3% as of 11:50 a.m GMT (6:50 a.m. GMT), showing that this really is a banking phenomenon. Here's how it looks for Alpha Bank: Join the conversation about this story »