the chicago board options exchanges cboe volatility index vix climbed around 14 to 2767 on thursday us stocks had another rough day settling lower on wednesday the dow jones index fell 067 to 3077279 while the sp 500 declined by 045 to 380178 the nasdaq composite shed 015 in the session twitter inc twtr shares climbed around 8 on wednesday after hindenburg research said it has accumulated a significant long position in the stock fastenal company’s fast shares tanked more than 6 after the company reported downbeat sales results for the second quarter travelrelated stocks came under pressure after delta air lines inc dal reported weakerthanexpected quarterly earnings american airlines group inc aal and united airlines holdings inc ual shares also closed lower on wednesday investors now await producer price data scheduled for release before the opening bell on thursday the us released consumer price data on wednesday which showed the annual inflation rate accelerating to 91 in june