Cymer Inc, a San Diego company that describes itself grandly as the leading provider of excimer laser illumination sources for use in deep ultraviolet photolithography systems for pilot and volume production of integrated circuits, has filed to go public with an initial offer of 1.7 million shares, 1 million new, but gave no target price. The company, which says its lasers are incorporated into both step-and-repeat and step-and-scan photolithography systems for the manufacture of semiconductors with critical feature sizes below 0.35 microns, plans to use net proceeds to expand its manufacturing capacity and for working capital. The offering is being underwritten by Morgan Stanley & Co Inc, Montgomery Securities Inc and Needham & Co Inc.

Puma Technology Inc, San Jose company developing mobile data exchange software designed to enable users to access, exchange and synchronise information stored different devices such as notebook and handheld computers, personal electronic organizers, smart phones and smart pagers, got its initial public offering of 3.9 million shares, 2.5 million of them new, away at $9.50 a share. Puma did not give plans for the $27m or so net raised. The underwriters were Deutsche Morgan Grenfell Inc and Alex Brown & Sons Inc.

Colt Telecom Group Plc got its initial public offering of 26.7 million new ordinary shares away at $18.10 per American Depositary Share, each representing four ordinary shares in the formerly wholly-Fidelity Investments Ltd-owned builder and operator of Metropolitan Area Networks. The target price had been between $14.83 and $16.80. Of the 26.7 million ordinary shares, 13.35 million are being offered in the US and Canada, and 13.35 million are being offered in other countries. Lead underwriter was Morgan Stanley & Co.