US STOCKS-S&P, Nasdaq down after 2-day run up; biotechs, energy fall
* Crude falls after 4-day rally
* ADP employment falls short of expectations
* Merck down after earnings, Disney climbs
* Indexes: Dow up 0.1 pct, S&P off 0.4 pct, Nasdaq down 0.2 pct (Updates to midday, changes byline)
By Caroline Valetkevitch
NEW YORK, Feb 4 (Reuters) - The S&P 500 and Nasdaq eased on Wednesday, in the wake of a two-day rally, as Gilead and other biotech names declined and energy shares reversed course with oil prices.
Walt Disney kept the Dow in positive territory. Disney shares jumped 8.3 percent to $101.86 after quarterly profit topped analysts' expectations.
Leading biotechnology shares lower was Gilead Sciences , whose stock dropped 7.5 percent, a day after the drugmaker said it is offering steeper-than-expected discounts on its hepatitis C drugs to health insurers and other group payers who had complained about the price.
The news fueled concerns the sector would face increasing price pressure, The Nasdaq Biotech Index was down 1.4 percent. Gilead was also the biggest drag on the S&P 500 and Nasdaq. Continuación...