shares of united airlines holdings inc ual slipped 220 to 3780 tuesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 042 to 412247 and dow jones industrial average djia falling 018 to 3277441 united airlines holdings inc closed 1672 below its 52week high 5452 which the company reached on november 8th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as southwest airlines co luv fell 189 to 3834 delta air lines inc dal fell 160 to 3321 and american airlines group inc aal fell 266 to 1462 trading volume 76 m remained 41 million below its 50day average volume of 117 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