Mixed open ahead of iPhone 6 launch

The markets opened mixed with the Dow losing 15 points to 17,121 while Nasdaq gained 13 points to 4,596 ahead of Apple's launch of the iPhone 6.

On the upside

Global Cash Access Holdings will pay a premium of approximately $1.2 billion to buy Multimedia Games Holding (Nasdaq: MGAM).

iDreamSky Technology (Nasdaq: DSKY) extended its gains.

Shares of Mobileye (NYSE: MBLY) continued climbing.

On the downside

FBR Capital downgraded Keryx Biopharmaceuticals (Nasdaq: KERX) from a Market Perform rating to an Underperform rating.

Shares of Prana Biotechnology (Nasdaq: PRAN) continued falling.

Quiksilver (NYSE: ZQK) extended its losses.

In the broad market, advancing issues were on par with decliners on the NYSE and while advancers outpaced decliners by more than 7 to 5 on Nasdaq. The broader S&P 500 slipped 2 points to 2005. Bitcoin fell $13 to $466.