Markets Close Mostly Lower as Twitter Stock Plunges Dow, Nasdaq fall, S&P 500 inches up By Newser Editors and Wire Services Posted Oct 6, 2016 3:16 PM CDT 4 comments Comments Specialist Jason Hardzewicz, left, works at his post on the floor of the New York Stock Exchange, Wednesday, Oct. 5, 2016. (AP Photo/Richard Drew)Specialist Jason Hardzewicz, left, works at his post on the floor of the New York Stock Exchange, Wednesday, Oct. 5, 2016. (AP Photo/Richard Drew) (Newser) – Stocks are ending mostly lower after clawing back much of an early loss, the AP reports. Health care and phone companies took losses Thursday, while makers of basic materials and some technology companies posted gains. Mylan slumped 3% following reports that the company overcharged Medicaid over five years for its EpiPen allergy treatment. Twitter plunged 20% following reports that some companies believed to be suitors were not interested in the company. The Dow Jones industrial average fell 12 points, or 0.1%, to 18,268. The Standard & Poor's 500 index inched up a point to 2,160. The Nasdaq composite declined 9 points, or 0.2%, to 5,306. More stocks fell than rose on the New York Stock Exchange.