On the upside
Novartis made a $500,000 milestone payment to Opexa Therapeutics (NYSE: OPXA).
YRC (Nasdaq: YRCW) launched its online tool Service Day Calculator that offers clients greater shipment flexibility.
First quarter earnings for AAR (NYSE: AIR) topped estimates prompting an upgrade.
On the downside
ATP Oil & Gas (Nasdaq: ATPG) will offer 5.3 million common shares.
Shares of Corinthian College (Nasdaq: COCO) dropped after Congress announced hearings to scrutinize the for-profit .
Calpine (Nasdaq: TLAB) said that major shareholder Harbinger Capital Partners will sell 20 million of its shares in the company.
In the broad market, advancing issues outpaced decliners by a margin of 10 to 9 on both the NYSE and Nasdaq. The Russell 2000 which tracks small cap stocks held steady at 620.
