shares of alaska air group inc alk slid 021 to 4255 tuesday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 009 to 415487 and the dow jones industrial average djia falling 003 to 3397663 alaska air group inc closed 1900 below its 52week high 6155 which the company achieved on april 21st the stock demonstrated a mixed performance when compared to some of its competitors tuesday as southwest airlines co luv fell 077 to 3206 delta air lines inc dal rose 223 to 3536 and united airlines holdings inc ual rose 156 to 4304 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