IPO quartet

Four IPOs began trading on Thursday, as the IPO queue continues to shrink. Knockout mouse company Deltagen (DGEN) raised $105 million its IPO through the sale of 7 million shares at $15. On June 15, the company filed to sell 7 million shares at $13-$15, after originally filing on April 13 to raise up to $100 million. The deal, which has a 1.05 million-share overallotment, is underwritten by Salomon Smith Barney; Robertson Stephens; and U.S. Bancorp Piper Jaffray. DGEN was up $4 (27 percent) to $19 on Thursday.

Rosetta Inpharmatics (RSTA) raised $100.8 million, selling 7.2 million shares at $14. The offering was underwritten by Lehman; Lazard Freres; Prudential Vector; and Fidelity Capital Markets. The company combines informatics and genomics to enhance the drug discovery process. RSTA was up $3.875 (28 percent) to $17.875. ...