Smart-ring maker Oura delayed its Nasdaq initial public offering one day before its planned listing, withholding a new timetable and details of the share sale as market uncertainty intensified. The company had been scheduled to price 50 million shares at $40 to $44 on September 29 and begin trading on September 30; reported orders reached four times the available shares. Chief Executive Officer Tom Hale said demand remained strong and that Oura had flexibility over when to list. The postponement adds to a second-half slowdown in the U.S. IPO market, with OpenAI, Anthropic and Holtec Nuclear also reported to have delayed listing plans. Oura, founded in Finland in 2013, sells health-monitoring rings and had about 5.7 million paid members as of June.