Fuwei Films ( FFHL), which makes plastic films for packaging and other uses, soared more than 22% Thursday after the company posted $7.88 per-share 2006 earnings on sales that leapt 26.2% year over year to $55.9 million. Shares were rising $2.19 to $11.98.

Shares of Corcept Therapeutics ( CORT) were leaping after the California-based biotech was accepted into the Nasdaq Capital Market, the exchange's small-cap index, in a switch from the Nasdaq Global Market. The change will effect at market open on Monday. Shares were up 19 cents, or 15.7%, to $1.40.

United Retail Group ( URGI) posted a drop in adjusted fiscal fourth-quarter profits. The plus-sized apparel retailer earned $2 million, or 14 cents a share (excluding items), compared with a 20-cent per-share profit last year, but analysts polled by Thomson Financial were looking for 11 cents a share. The New Jersey-based company was gaining $1.14, or 9.6%, to $13.06.

Encorium Group ( ENCO), which designs and manages clinical trials for biotechs, has signed around $4.7 million in new contracts in the first quarter through its European division. The Wayne, Pa., company now expects 2007 revenue to be at the upper end of its prior outlook range between $30 million and $34 million. Shares were bouncing 28 cents, or 8.3%, to $3.66.

Heelys ( HLYS), maker of children's hybrid sneaker-skates with removable wheels, rose on a Wachovia upgrade to outperform from market perform. The analyst cited high demand for the shoes and said the Texas-based company may top the Street's first-quarter income target of 18 cents a share. Heelys stock was adding $2.58, or 9.3%, to $30.37.

Cutera ( CUTR) shares plunged some 31% after the Brisbane, Calif., maker of laser-based aesthetic systems chopped at least 8 cents off its first-quarter per-share earnings outlook, with expectations now between 11 cents and 13 cents on a GAAP basis. Sales projections were cut by $3 million to $23 million -- $3.3 million below targets. Shares were sliding $12.02 to $26.37.

Car parts maker Hayes Lemmerz International ( HAYZ) also took a nosedive after stockholders' equity as of Jan. 31 plummeted 44.5% year over year to $101.8 million. Despite a significantly narrowed fiscal 2006 loss, shares were losing $2.46, or 31.8%, to $5.27.

iCAD ( ICAD) and other makers of computer-aided mammography-screeners were falling after the New England Journal of Medicine reported that the devices don't significantly improve on detection rates for invasive breast cancer (more likely to spread elsewhere in the body). Shares of New Hampshire-based iCAD were tumbling 37 cents, or 10.2%, to $3.25.

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