Thursday's Small-Cap Winners & Losers

Zoll Medical (ZOLL Quote) jumped 20.1% after the Chelmsford, Mass.-based company pulled past Wall Street expectations for the quarter ended Oct. 1. The resuscitation-device maker more than doubled its profits for the quarter, posting income of $5.4 million, or 55 cents a share, on revenue of $72.3 million. In the same period a year ago, it earned $2.2 million, or 23 cents a share, on revenue of $57.1 million. Analysts polled by Thomson Financial had projected earnings of 37 cents a share and revenue of $64.8 million. Shares were trading up $8.30 to $49.69.

The9 (NCTY Quote) surged on improving third-quarter profits. The China-based video game developer earned $8.1 million, or 33 cents a share, topping estimates by 5 cents. Revenue jumped 26% to 233.4 million yuan, or $29.5 million. Shares were up $3.51, or 15%, to $26.95.

Irvine Sensors (IRSN Quote) shares rocketed after the chipmaker announced it had booked about $16.6 million in new orders, including options, in the first six weeks of fiscal 2007. The small Costa Mesa, Calif.-based company, which specializes in defense and security technology, says its Optex subsidiary now has a released backlog of a record $32 million. Shares were up $1.35, or more than 100%, to $2.42.