Wellco Enterprises ( WLC) soared more than 30% after the military-footwear maker agreed to be bought by privately held Golden Gate Capital for $14 a share. The transaction will probably close within the first half of 2007. The Waynesville, N.C., company's stock was rising $3.23 to $13.75.

SWS Group ( SWS) careened past Wall Street expectations for the quarter ended Dec. 29. The Dallas-based broker had a $12.9 million profit from continuing operations, or 48 cents a share, compared with $8.1 million, or 33 cents a share, a year ago. The analyst who follows the company was looking for 39 cents a share, according to Thomson Financial. SWS stock was up $5.75, or 23%, to $30.71.

Intevac ( IVAC - Get Report), which makes equipment for production of hard-disk-drive components, more than doubled its fourth-quarter income to $21.3 million, or 97 cents a share, from $9.9 million, or 46 cents a share, a year ago. Revenue spiked to $95.9 million from $52.7 million a year ago, handily beating the $86.5 million consensus. The Santa Clara, Calif., company was gaining $5.36, or 23.8%, to $27.93.

Boston's Keane ( KEA) was surging after Caritor, a fellow information-technology firm based in California, agreed to take it private for $854 million, or $14.30 a share -- a 19% premium to Tuesday's closing price. The deal will likely close in the second quarter. Shares were climbing $2.16, or 18%, to $14.16.

EGL ( EAGL) stock deflated to pre-January levels after the Houston-based freight company warned of weak fourth-quarter numbers, prompting private equity firm General Atlantic to drop its support for a buyout bid proposed last month. Chief Executive James Crane, EGL's main shareholder, had led the $36-a-share offer. Shares were losing $6.36, or 16.8%, to $31.53.

Aspect Medical Systems ( ASPM) fell after the Newton, Mass., company projected non-GAAP earnings of between 6 cents and 8 cents a share in the first quarter, which would widely miss the Street's 16-cent per-share estimates. For the fourth quarter, the maker of anesthesia monitoring systems posted pretax non-GAAP income of $4.2 million, or 18 cents a share, compared with last year's $3.1 million, or 13 cents a share. Shares were down $2, or 11.4%, to $15.49.

Optical Communications ( OCPI) swung to a loss of $4.2 million, or 4 cents a share, in the quarter ended Dec. 31, compared with profits of $1.1 million, or a penny a share, a year ago. One analyst was looking for a per-share loss of 3 cents. The California-based semiconductor company's $17 million in sales were a hair lower than last year and missed the target by about $4.6 million. Shares were receding 13 cents, or 8.3%, to $1.43.

Genomic Health ( GHDX - Get Report) posted disappointing results as well, widening its losses to $9 million, or 37 cents a share, on revenue of $8.6 million. Last year the biotech lost $8.2 million, or 34 cents a share, on $1.9 million in revenue. Shares of the Redwood City, Calif., company were off $1.27, or 5.9%, to $20.22.