Computer chip designer Arm plans to complete its long journey to an initial public offering later this week. Other tech companies looking to go public will be closely watching the Arm IPO. X The Arm IPO will test investor appetite for new issues, market watchers say. Other tech IPOs waiting in the wings include grocery delivery platform Instacart and cloud software provider Klaviyo. Cambridge, U.K.-based Arm intends to sell 95.5 million shares priced between $47 and $51. That would translate to a valuation for Arm of $50.2 billion to $54.5 billion. Arm was publicly traded from 1998 to 2016 when...