Shares of GoPro (Nasdaq: GPRO) rallied for a fourth consecutive trading day more than double its IPO price of $24 a share last Thursday.
Twitter (Nasdaq: TWTR) has hired Anthony Noto, a former Goldman Sachs executive, to replace chief financial officer Mike Gupta.
Salix Pharmaceuticals (Nasdaq: SLXP) announced positive results for its treatment of irritable bowel syndrome.
On the downside
Shares of Accuity Brands (NYSE: AYI) tumbled after reporting higher revenues and earnings for the 3rd quarter, but missed analysts expectations.
An FDA warning letter about problems at a STAAR Surgical Company (Nasdaq: STAA) facility that makes implantable lenses for the eye triggered a sell-off.
Synageva BioPharma (Nasdaq: GEVA) announced trial data for its treatment of liver injury. However, analysts were lukewarm about the results.
In the broad market, advancing issues outpaced decliners by a margin of more than 2 to 1 the NYSE and by almost 3 to 1 on Nasdaq. The broader S&P 500 rose 13 points to close at 1973. Bitcoin rose $6.34 or 0.98% to $644.33.