Hope for Chinese stimulus boosts markets

China's imports dropped sharply last month but the markets soared with the Dow leaping 294 points to 16,397 in anticipation of additional stimulus measures from the Chinese government. Nasdaq jumped 94 points to 4,778.

On the upside

Capnia (Nasdaq: CAPN) acquired substantially all assets from pulmonary resuscitation solutions developer NeoForce Group.

TECO Energy (NYSE: TE) will be acquired by Emera for a premium of approximately $6.48 billion.

The Food and Drug Administration granted Nanosphere (Nasdaq: NSPH) 510(k) clearance for its Verigene(R) Respiratory Pathogens Flex Nucleic Acid Test.

JD.com (Nasdaq: JD) will repurchase up to $1 billion worth of American Depositary Shares over the next two years.

Chesapeake Energy (NYSE: CHK) entered new gas gathering agreements with Williams Companies (NYSE: WMB) in the Haynesville Shale and dry gas Utica Shale operating areas.

On the downside

Retreating crude oil prices weighed down shares of Denbury Resources (NYSE: DNR).

In the broad market, advancing issues outpaced decliners by a margin of more than 5 to 1 on the NYSE and by nearly 6 to 1 on Nasdaq. The broader S&P 500 surged 34 points to 1,955. Bitcoin added $4 to $244.