shares of united airlines holdings inc ual sank 097 to 4508 thursday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 017 to 413062 and dow jones industrial average djia falling 066 to 3330951 this was the stocks second consecutive day of losses united airlines holdings inc closed 996 short of its 52week high 5504 which the company reached on march 7th the stock demonstrated a mixed performance when compared to some of its competitors thursday as southwest airlines co luv fell 092 to 2897 delta air lines inc dal fell 172 to 3322 and american airlines group inc aal fell 188 to 1407 trading volume 43 m remained 38 million below its 50day average volume of 82 m editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use