Lower open over disappointing earnings

Disappointing earnings weighed the markets down to a modestly lower open with Dow slipping 28 points to 17,921. Nasdaq lost 11 points to 5,002.

On the upside

The Food and Drug Administration granted 510(k) clearance to Great Basin Scientific's (Nasdaq: GBSN) molecular diagnostic test for Group B Streptococcus.

Procera Networks (Nasdaq: PKT) will be acquired by Francisco Partners Management for $240 million in cash.

Angie's List (Nasdaq: ANGI) swung to an unexpected profit for the first quarter.

On the downside

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

Bloomberg reported that the Justice Department is investigating Trinity Industries (NYSE: TRN) for possible criminal charges related to the company's guardrails.

First quarter earnings dropped for Adtran (Nasdaq: ADTN) to fall short of estimates.

In the broad market, declining issues outpaced advancers by a margin of 3 to 2 on the NYSE and by nearly 2 to 1 on Nasdaq. The broader S&P 500 eased a point to 2095. Bitcoin added $3 to $235.