US STOCKS-Wall St gains as small-caps rally; biotech lifts Nasdaq

jueves 22 de mayo de 2014 15:32 GYT
 

* JD.Com soars in market debut, among Nasdaq's most actively traded

* Small-cap and "momentum" stocks outperform

* Dow up 0.1 pct; S&P 500 up 0.3 pct; Nasdaq up 0.7 pct