DemandTec Inc. (Nasdaq:DMAN) is trading 18% higher today after Wednesday’s after-the-close announcement that the San Carlos, Calif.-based company had cut back its first-quarter losses. The software maker said it had a net loss of $1 million, or $0.04 per share, for the quarter ended May 31 compared with a loss of $1.2 million, or $0.19 a share for the same quarter a year ago. DemandTec said it had added new retail customers in the United States.

DemandTec is at $8.49, up $1.34 from Wednesday’s close, just a half hour before the close on today’s shortened trading day.

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