US STOCKS-Nasdaq snaps four-day losing streak as health stocks rebound
* Gilead leads as biotechs ends 5-day losing streak
* Railcar makers gain on new tough oil-train safety rules
* Social media stocks fall with LinkedIn
* Consumer sentiment, auto sales rise
* Indexes up: Dow 0.7 pct, S&P 0.7 pct, Nasdaq 0.8 pct (Updates to afternoon)
By Tanya Agrawal
May 1 (Reuters) - Wall Street was higher in afternoon trading on Friday, with the Nasdaq poised to close higher for the first time this week, as healthcare and technology stocks rebounded, and as data pointed to a pick up in economic activity.
A majority of the 10 major S&P indexes were higher, with both the health and tech indexes moving up after two days of losses. The Nasdaq biotech index was up 2.6 percent, ending a 5-day losing streak.
Apple gave the biggest boost to the Nasdaq and the S&P 500 with a 1.2 percent increase to $126.66. Gilead rose 5.4 percent to $105.94 after its quarterly profit nearly doubled. Continuación...