shares of palantir technologies inc pltr sank 053 to 947 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 064 to 410990 and dow jones industrial average djia falling 101 to 3301214 palantir technologies inc closed 215 below its 52week high 1162 which the company reached on august 5th 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