 The Cboe Volatility index and VIX-related exchange traded funds are surging, and some anticipate that the market volatility will linger as the SP 500 continues to struggle ahead. Among the best-performing non-leveraged ETFs of Monday, the iPath Series B SP 500 VIX Short Term Futures ETN NYSEArca: VXX increased 7.3, and the ProShares VIX Short-Term Futures . 