shares of henry schein inc hsic sank 052 to 7415 thursday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 008 to 415194 and dow jones industrial average djia falling 026 to 3272682 this was the stocks fourth consecutive day of losses henry schein inc closed 1853 below its 52week high 9268 which the company reached on april 14th the stock underperformed when compared to some of its competitors thursday as idexx laboratories inc idxx fell 045 to 40502 mckesson corp mck rose 327 to 33781 and amerisourcebergen corp abc rose 019 to 13927 trading volume 13 m eclipsed its 50day average volume of 793907 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