The markets rebounded during the midday with the Dow adding 3 points to 16,145 as first time applications for unemployment benefits dropped to a 14-year low. Nasdaq rose 5 points to 4,220.

On the upside

Respiratory care products maker Allied Healthcare Products (Nasdaq: AHPI).

Market Realist provided an overview of Arch Coal's (NYSE: ACI) operations.

Shares of NewLink Genetics (Nasdaq: NLNK) continued rising.

On the downside

Tetraphase Pharmaceuticals (Nasdaq: TTPH) will offer up to $75 million worth of common stock.

Esperion Therapeutics (Nasdaq: ESPR) priced its public offering of 4.25 million common shares at the discounted price of $20 per share.

Monster Worldwide (NYSE: MWW) will offer $125 million worth of convertible senior notes through a private placement.

In the broad market, advancing issues outpaced decliners by a margin of 5 to 3 on the NYSE and by more than 7 to 5 on Nasdaq. The broader S&P 500 slipped 2 points to 1860. Bitcoin lost $11 to $378.