Updated from 12:19 p.m. Shares of ValueClick ( VCLK) were among technology's winners Tuesday, rising 5.5% after the company backed its second-quarter earnings estimate and lifted its full-year guidance. The online advertising and technology company now expects full-year earnings of 38 cents to 40 cents a share on sales of $222 million to $226 million. Previously, the company expected earnings of 37 cents to 39 cents a share on sales of $218 million to $223 million. Analysts surveyed by Thomson First Call are expecting earnings of 39 cents a share on sales of $223 million. For the second quarter, the company continues to expect earnings of 8 cents a share on sales of $52 million to $53 million. Analysts are expecting earnings of 8 cents a share on sales of $52.6 million. Shares traded up 56 cents to $10.83. Catuity ( CTTY) soared 312.5% after the microcap company announced a deal with CertifiChecks. As part of the deal, Catuity will provide its hosted loyalty and gift card software to CertifiChecks' 70,000-plus merchants across the U.S. CertifiChecks will be the first company to deploy Catuity's new Catuity Advanced Loyalty System as a turnkey, hosted solution, Catuity said. Financial terms of the deal were not disclosed. The system will be deployed early in the third quarter. Daytraders bid the stock up $12.50 to $16.50 on more than 422 times average daily volume. Shares of IBM ( IBM) traded actively after the company reached an agreement with NiSource ( NI) that calls for IBM to provide a host of business transformation and outsourcing services to NiSource. The 10-year deal is worth about $1.6 billion. NiSource expects to realize about $530 million in operating and capital cost savings across its 15 primary operating subsidiaries during the life of the contract, it said. IBM will begin service delivery on July 1, 2005. Shares of IBM traded down 14 cents to $76.41. Intervoice ( INTV) fell 7.9% after the provider of data and voice solutions posted first-quarter results that topped estimates but warned that second-quarter sales would fall short of expectations. The company earned $3.9 million, or 10 cents a share, on sales of $43.3 million. Analysts were expecting earnings of 7 cents a share on sales of $42.6 million. A year ago the company earned $3.2 million, or 8 cents a share, on sales of $41.9 million. Looking ahead, Intervoice forecast second-quarter sales of $40 million to $45 million. Analysts are expecting sales of $46.6 million. Shares traded down 76 cents to $8.86.