Internet Capital Group

(ICGE)

was up 24.2% in late morning after it announced a shareholder rights plan, triggered when someone attempts to buy at least 15% of its shares. The company said shareholders would get a preferred stock purchase right for each common share outstanding at the close of business on Dec. 6. Other business-to-business stocks were rallying today as well.

Ariba

(ARBA)

was up 13.9%.

PurchasePro

(PPRO)

was up 29.9%.

Commerce One

(CMRC)

was up 19.9%.