shares of nisource inc ni slipped 293 to 2451 tuesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 190 to 456700 and dow jones industrial average djia falling 186 to 3448372 nisource inc closed 209 below its 52week high 2660 which the company reached on may 10th despite its losses the stock outperformed some of its competitors tuesday as duke energy corp duk fell 320 to 9701 sempra sre fell 349 to 11987 and atmos energy corp ato fell 371 to 9032true trading volume 60 m eclipsed its 50day average volume of 38 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