Big Crash on EUR "JAN-15, the Swiss central bank cut the benchmark interest rate to -0.75%, and announced to abandon the euro / Swiss Franc exchange rate intervention, cancel to maintain the EUR / CHF 1.2 limit, EUR / CHF plunged nearly 30%, a decline of nearly 3000 points; Pan European in Europe 300 index fell more than 2%, Switzerland SMI stock index intraday decline of over 7%, the highest since the 2011 April most days fell." Yesterday night all of moments in my wechat had been full of this bad news. The big crash of the Euro make lots of traders and hedge funds had been liquidated immediately . The black swan effect warns us again to manage the risk through the hedging. Otherwise, we would hear the news again "someone have to jump down for the huge liabilities......"