iPath S&P 500 Dynamic VIX ETN (NYSEARCA:XVZ) shares were down 0.2% during trading on Thursday . The stock traded as low as $37.84 and last traded at $38.49. Approximately 4,025 shares changed hands during mid-day trading, an increase of 7% from the average daily volume of 3,757 shares. The stock had previously closed at $38.58. […]