The markets opened higher with the Dow rising 13 points to 16,627 as consumer prices edged up a modest 0.1%. Nasdaq added 4 points to 4,424.

On the upside

Regulus Therapeutics (Nasdaq: RGLS) demonstrated human proof-of-concept with a microRNA therapeutic for its hepatitis C treatment RG-101.

iRobot (Nasdaq: IRBT) reported higher third quarter earnings and revenue that surpassed analyst expectations.

Blue Earth (Nasdaq: BBLU) denied allegations of fraud that were alleged by a Seeking Alpha contributor.

On the downside

Boulder Brands (Nasdaq: BDBD) warned that third quarter earnings would fall short of previous guidance.

3D Systems (NYSE: DDD) reported preliminary third quarter earnings and revenue that missed expectations prompting the company to lower its full year guidance.

Cree (Nasdaq: CREE) disappointed with sharply lower first quarter earnings that fell short of analyst expectations.

In the broad market, advancing issues outpaced decliners by a margin of 9 to 7 on the NYSE while decliners edged out advancers by more than 10 to 9 on Nasdaq. The broader S&P 500 added a point to 1942. Bitcoin slipped $2 to $380.