Ariba, i2 Suffer After Customer Loss

Ariba (ARBA Quote) and i2 Technologies (ITWO Quote) were hit hard Monday after investors learned Friday the two had lost a key customer.

Ariba dropped $16.19, or 11%, to $127.06, while i2 was off $17.19, or 9.2%, to $169.88. However, partner IBM (IBM Quote) didn't get hit. It rose $5.19, or 4.6%, to $117.81.

On Friday, the three companies, which call themselves The Alliance, suffered their second setback, losing their spot as the providers of the underlying technology for the Global Health Care Exchange. The exchange is a place where health care companies can buy and sell goods over the Internet.