US STOCKS-Decline in healthcare stocks checks gains by GM, tech

miércoles 21 de octubre de 2015 13:10 GYT

* Valeant sinks after Citron report, drags Allergan, Endo

* GM, Boeing rise after strong results

* Twitter falls after Morgan Stanley downgrade

* Ferrari up on debut

* Dow up 0.37 pct, S&P down 0.08 pct, Nasdaq down 0.39 pct (Updates to early afternoon)

By Abhiram Nandakumar

Oct 21 (Reuters) - Wall Street was little changed in early afternoon trading on Wednesday as gains by General Motors and technology stocks were limited by a slide in healthcare stocks.

Valeant Pharmaceutical's U.S.-listed shares lost a fourth of their value and fell to $106.00 after short-seller Citron Research released a critical report on the company.

Allergan fell 4.6 percent to $251.37 and Endo International slumped nearly 13 percent to $54.98, weighing the most on the S&P 500 and the Nasdaq composite indexes. Both companies have business models similar to that of Valeant.   Continuación...