Volatility product iPath Series B S&P 500 VIX Short-Term Futures ETN VXX surged 12% on the final day of last week as a spike in inflation data bolstered the bets over one more Fed rate hike this year. The core inflation number, barring food and energy prices, matched with economists’ expectations at an increase of 0.3% on the month and 4.1% on a year-over-year basis. Volatility iPath Series B S&P 500 VIX Short-Term Futures ETN VXX – Up 7.1% Last week was roiled by geopolitical concerns and worries over the Fed’s next actions.