shares of palantir technologies inc pltr slipped 244 to 759 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 116 to 411958 and dow jones industrial average djia falling 108 to 3368453 palantir technologies inc closed 403 below its 52week high 1162 which the company achieved on august 5th