US STOCKS-Oil, tech boost S&P and Dow, healthcare caps Nasdaq gains
* Oil prices touch 2016 highs
* Biogen, Alexion drop after drugs fail in trials
* Valeant slumps on weak results, forecast cut
* Indexes up: Dow 0.4 pct, S&P 0.19 pct, Nasdaq 0.04 pct (Updates to open)
By Yashaswini Swamynathan
June 7 (Reuters) - Gains in energy and technology stocks helped the S&P 500 and the Dow move higher on Tuesday morning, but a steep fall in healthcare shares capped gains on the Nasdaq.
Eight of the 10 major S&P sectors were higher, led by the energy index's 0.8 percent rise as oil prices hovered around 2016 highs.
However, the healthcare index tumbled 0.75 percent, led by Biogen and Alexion, both of which reported that their drugs failed in trials.
The other sectors were mostly higher a day after Federal Reserve Chair Janet Yellen expressed confidence in the health of the economy, but was vague on when the Fed would raise interest rates. Continuación...