FEI ( FEIC) stock jumped in after-hours trading Tuesday as the company, which makes equipment for nanotechnology development, posted impressive fourth-quarter financials. The Oregon-based outfit said profits from continuing operations totaled $11.9 million, or 30 cents a share, up sharply from $6.9 million, or 18 cents a share, a year ago. Sales ratcheted up 41% from a year ago to $140.3 million. Shares were gaining $2.85, or 11.3%, to $28.16.

Aspen Technology ( AZPN) shares were climbing after the Cambridge, Mass., company said sales for the second fiscal quarter jumped 26% to $96.4 million from a year ago. The business-software firm hasn't yet provided per-share earnings figures, but GAAP-based income rose to $25.8 million from last year's $8.7 million. Shares were trading up $1.11, or 10.8%, to $11.40.

Brooks Automation ( BRKS) saw dramatically higher income for the quarter ended Dec. 31 that squared with Wall Street expectations. Excluding items (save for stock-option expenses), the Chelmsford, Mass., company earned $26 million, or 35 cents a share, compared with break-even a share last year by the same measure. Sales vaulted 76.4% to $191.4 million from a year ago, beating estimates by about $4 million.

Looking ahead, the semiconductor company expects GAAP income to range between 25 cents and 30 cents a share on a top line of between $185 million and $190 million. Analysts are looking for revenue of $180.5 million. Shares were rising 94 cents, or 6.6%, to $15.15.

Discount travel Web site Travelzoo ( TZOO) slid after posting a bottom line of $4.3 million for the fourth quarter, or 26 cents a share, which missed Wall Street targets by 2 cents. Last year, the New York-based company earned $1.7 million, or 10 cents a share. Its top line rose 27% to $17.7 million from a year ago, but it also was just shy of estimates. Shares were losing $3.51, or 10.5%, to $29.95.

Rentrak's ( RENT) fourth-quarter profits were essentially flat with last year, totaling $1.1 million, or a dime a share, on revenue that rose 11.7% to $26.8 million. Analysts were looking for per-share earnings to improve by 2 cents year over year. The Portland, Ore.-based company, which processes sales data for the entertainment industry, was down 90 cents, or 5.5%, to $15.45.

Acxiom ( ACXM) was lower after the Little Rock-based information-technology firm said Chief Financial Officer Frank Cotroneo had resigned. Rodger Kline, company board member and chief administrative leader, will replace him in the interim. Shares were off 63 cents, or 2.8%, to $22.